CN110249894B - Interplanting sweet corn in mango orchard and crop rotation cultivation method of sweet corn and sweet crisp peas - Google Patents
Interplanting sweet corn in mango orchard and crop rotation cultivation method of sweet corn and sweet crisp peas Download PDFInfo
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- A01C21/00—Methods of fertilising, sowing or planting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
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Abstract
The invention discloses a rotation cultivation method for interplanting sweet corn and sweet and crisp peas in a mango garden, which comprises the following steps: selecting a planting area, planting mangoes, interplanting sweet corns, sweet corns and sweet and crisp peas in a mango garden, performing crop rotation and harvesting, applying base fertilizer, preventing and treating plant diseases and insect pests, and topdressing. According to the method, the sweet corns and the sweet and crisp peas are interplanted between the rows of the mango garden during the first year to the third year after the mango tree seedlings are fixedly planted, so that the utilization rate of the land is obviously improved, the economic income of a unit area is increased, the management cost and the production cost are saved, and the method is an efficient and high-yield cultivation method.
Description
Technical Field
The invention relates to a cultivation method for interplanting sweet corn and sweet and crisp peas in a mango garden, and belongs to the technical field of ecological agriculture.
Background
Mango (Mangifera indica L.) is one of the famous tropical fruits, and the fruit is rich in sugar, protein, crude fiber, vitamin a, vitamin C, minerals, protein, fat, sugar, etc. Can be used for preparing fruit juice, jam, canned food, mango milk powder, preserved fruit, etc., and is a tropical fruit which people like to eat. The method has the characteristics of high-wind climate type areas of tropical and subtropical zones in Yunnan, multiple mountainous areas in China, obvious three-dimensional climate, sufficient illumination, higher temperature in the whole year, clear dry and wet seasons and the like, and is a suitable area for producing mangoes, soybeans and chives. However, in the young period of mango trees (within 1-3 years after planting), single mango is input in the orchard, and output and benefit are not available, and conventional clearing management of the orchard accelerates water and soil loss, soil degradation, serious unbalance of soil environment and increasingly serious environmental damage, so that how to find a sustainable-planting mango orchard agricultural production mode, increase economic benefit of the mango orchard and improve the soil environment for growth and development of the mango trees is of great significance.
Sweet corn (Sweet corn) is popular with consumers due to excellent quality, good taste, unique flavor and high nutritive value, and the demand of people on Sweet corn is increased year by year. However, sweet corn is a gramineous plant, is sensitive to nitrogen and strong in nitrogen absorption, can absorb more nutrients in soil by continuous cropping to cause lack of nitrogen in the soil, people only need to apply more nitrogen fertilizer to improve the yield of the sweet corn, but the problems of soil hardening, soil physical and chemical property degradation and the like caused by excessive application of chemical fertilizer are solved, and the soil environment is increasingly poor; on the other hand, corn diseases and insect pests (corn big and small leaf spot and rust disease) are planted in the corn for long-term continuous cropping. Pea (Pisum sativum L) is an annual climbing herbaceous plant of the leguminosae, and fresh and tender stem tips, bean pods and green beans are popular vegetables in slack seasons.
In the period of young fruit trees, if the measures of simply applying nitrogen and phosphorus fertilizers are used, the effect on improving the growth amount is poor, the utilization rate of the fertilizers is low, the cost is increased, the land is hardened, and the soil environment is increasingly poor. If sweet and crisp peas are simply and continuously interplanted in the mango garden, firstly, the roots of the peas can secrete a large amount of organic acid, so that the soil acidity is increased, the growth of rhizobia of the peas in the next year is influenced, and the occurrence of plant diseases and insect pests (root rot, powdery mildew and the like) is aggravated, so that the peas in the later crops grow badly or die seedlings; and secondly, the plants after continuous cropping absorb more phosphorus and potassium fertilizer, so that soil is barren easily, and normal growth and pod setting of the succeeding sweet and crisp peas are influenced.
Disclosure of Invention
In order to solve the technical problem, the invention provides a rotation cultivation method for interplanting sweet corn and sweet and crisp peas in a mango garden, which comprises the following steps:
(1) and (3) planting area selection: selecting sandy soil with the annual average temperature of 19-23 ℃, the extreme low temperature of more than or equal to 0 ℃, the annual rainfall of 500-1600 mm, the annual evaporation capacity of 2000-3600 mm, the annual sunshine duration of more than 2000h, the annual sunshine percentage of more than 50%, no waterlogging and soil pH value of 5.5-6.7 as a planting area;
(2) and (3) mango planting: digging a mango tree planting pond with the specification of 80cm multiplied by 80cm in a planting area, wherein the row spacing of the mango trees is 3m multiplied by 5m, 50kg of decomposed farmyard manure and P are applied to each mango tree planting pond2O51.5kg of calcium superphosphate with the content of 16% w/w and 1.0kg of lime powder, transplanting mango tree seedlings into a mango tree planting pond in 3-5 months, planting 1 mango tree seedling in each mango tree planting pond, and covering the periphery of the root of each mango tree seedling with weeds to preserve water after planting;
(3) base fertilizer is applied before interplanting sweet corn and before crop rotation of sweet corn and sweet and crisp peas
Firstly, before planting sweet corn in the first year, applying 3000 kg/mu of decomposed farmyard manure P on the soil moisture for planting corn2O550 kg/mu of urea with 16% w/w of calcium superphosphate and 46% w/w of N, 15 kg/mu and K2Potassium sulfate with O content of 50% w/w 10 kg/mu is used as base fertilizer, and before sweet and crisp peas are sown in the first year, 1500 kg/mu of decomposed farmyard manure and P are applied on the soil moisture sown with the sweet and crisp peas2O550kg acre of calcium superphosphate with the content of 16 percent w/w is used as base fertilizer;
secondly, before planting sweet corn in the next year, applying rotten farmyard manure on the moisture of the planted corn at 2000 kg/mu and P2O533.33 kg/mu of superphosphate with the content of 16% w/w and 10 kg/mu of urea with the content of N of 46% w/w and K26.67 kg/mu potassium sulfate with 50% w/w of O content is used as base fertilizer; before sweet and crisp peas are sown in the next year, 1000 kg/mu of decomposed farmyard manure and P are applied to the soil moisture sown with the sweet and crisp peas2O533.33 kg/mu of superphosphate with the content of 16 percent w/w is used as base fertilizer;
thirdly, the base fertilizer applied before the sweet corn is planted in the third year and the base fertilizer applied before the sweet and crisp peas are sowed in the third year are the same as the base fertilizer applied in the third step (3);
(4) and (3) interplanting sweet corn, sweet corn and sweet and crisp peas in the mango garden: during three years from the current year to the third year of planting mango tree seedlings, in 4 months each year, sweet corns are planted between rows which are 1m away from two adjacent rows of mango trees, three furrow surfaces with equal width are divided between the rows, the furrow width is 30cm, two rows of corn planting ponds are dug on each furrow, the row spacing is 45cm multiplied by 25cm, after each corn planting pond is watered, a white mulching film is covered on each furrow surface, and then the position of each corn planting pond is subjected to film breaking and sweet corn seedling planting; harvesting sweet corns in the same year after the sweet corns are planted in the same year, wherein the harvesting time is 7-8 months per year, harvesting fresh ears of the sweet corns 20-25 days after the sweet corns are pollinated, and leaving sweet corn plants in the ground without harvesting the fresh ears of the sweet corns every time to serve as a support for climbing sweet and crisp peas; removing the white mulching film after harvesting sweet corns every year, intertilling to remove impurities and loosen the soil once in the whole garden, sowing sweet and crisp peas between every two adjacent sweet corn plants of each row of corn plants at the end of 9 months in the year when the sweet corns are harvested each time, pulling two cotton threads between the upper ends of the two adjacent sweet corn plants when the sweet and crisp peas are 10-15 cm high, winding another cotton thread on the sweet and crisp pea stalks between the two adjacent sweet corn plants, and pulling the cotton threads onto the cotton threads between the upper ends of the two adjacent sweet corn plants; harvesting sweet and crisp peas from 12 months to 1 month in the next year after the sweet and crisp peas are planted every year, and harvesting sweet and crisp pea pods when the seed of the sweet and crisp peas is full;
(5) and (3) pest control:
firstly, pest and disease control of mango trees: aiming at the prevention and control of fruit flies, during the period from the current year to the third year of planting mango tree seedlings, cleaning a garden before winter every year, binding straws on the trunks of the mango trees to attract fruit fly larvae to pupate, searching fruit fly pupae in gaps of bark of the mango trees and soil surface, searching once in 6-7 days, uniformly spraying 800-1200 times of liquid of 50% phoxim missible oil into the gaps of bark of the mango trees and the soil surface with the fruit fly pupae every time, applying the pesticide 1 time every week, and using 30-40 ml/mu of the 50% phoxim missible oil every time; trapping fruit fly adults on mango trees by using hanging bottles; spraying 2000 IU/microliter of bacillus thuringiensis suspending agent for 1-2 times in each treetop period of the mango tree, wherein the spraying interval time is 6-7 days, and the spraying interval time is 375-450 ml/mu of the bacillus thuringiensis suspending agent for each time;
② preventing and controlling sweet corn diseases and insect pests: in the period of planting the sweet corns in the first year, spraying 1000 times of solution of 70% thiophanate methyl suspending agent 800-; spraying 3000 times of 2% abamectin missible oil to plants of spider mites and aphids for 3 times continuously, wherein the spraying interval is 7-10 days for each time, and the 2% abamectin missible oil is used for 20-25 ml/mu for each time; spraying 4000 times of liquid of 40% quick-acting dicofol emulsifiable solution for the sweet corn borer for 3 times continuously, wherein the spraying interval is 7-10 days each time, and the spraying amount of the 40% quick-acting dicofol emulsifiable solution is 20-40 ml/mu each time; during the period of planting the sweet corns in the second year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet corns during the period of planting the sweet corns in the first year, except that the spraying times are 2; during the period of planting the sweet corns in the third year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet corns during the period of planting the sweet corns in the first year, except that the spraying times are 1;
③ preventing and controlling the pest and disease damage of the sweet and crisp peas: during the period of planting sweet and crisp peas in the first year, spraying 800-1000 times of liquid of 50% carbendazim wettable powder to the sweet and crisp pea plants every time for 3 times, wherein the application interval time is 7-10 days every time, and 40-50 g/mu of 50% carbendazim wettable powder is used every time; for bacterial spot disease, spraying 4000 times of solution of 72% streptomycin soluble powder to sweet crisp pea plants for 3 times, wherein the application interval time is 7-10 days for each time, and the 72% streptomycin soluble powder is used for 50-75 g/mu for each time; spraying sweet and crisp pea plants with 1000-1200 times of 2.5% of pesticide emulsion for aphids every time, wherein the application interval time is 7-10 days for each time, and the pesticide emulsion for each time is 15-25 ml/mu of 2.5% of pesticide emulsion; spraying sweet and crisp pea plants by adding 25-30 ml of 1.8% abamectin emulsifiable solution and 45-60 kg of water to each mu of leaf miner in the podding period for 3 times, wherein the application interval time is 7-10 days; during the period of planting the sweet and crisp peas in the second year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet and crisp peas during the period of planting the sweet and crisp peas in the first year, except that the spraying times are 2 times; during the period of planting the sweet and crisp peas in the third year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet and crisp peas during the period of planting the sweet and crisp peas in the first year, except that the spraying times are 1 time;
(6) topdressing:
top application of mango tree: in the current year of planting the mango trees, applying top dressing in a hole of 50-80 cm away from the trunks of the mango trees, wherein the top dressing is to apply 0.2kg of urea with the N content of 46% w/w and P to each tree in each hole2O50.1kg of calcium superphosphate with the content of 16% w/w, or 5-10 kg of thoroughly decomposed farmyard manure per plant or 5-10 kg of biogas slurry fertilizer per plant, wherein the hole-applied top dressing is applied for 3-4 times a year and is applied for 1 time every 3-4 months; with the increase of mango trees, in the second year and the third year of planting the mango trees, the other top dressing methods are the same as the top dressing in the hole of the current year of planting the mango trees except that the top dressing is applied in the hole of the mango crown in the dropping line;
top dressing of sweet corn: in the period of planting sweet corns in the first year, when the sweet corns are 2-3 leaves long, dressing 5 kg/mu of urea with the N content of 46% w/w; at the 4-5 leaf stage, topdressing K25 kg/mu potassium sulfate with 50% w/w of O content and 7 kg/mu urea with 46% w/w of N content; in the large-horn mouth period, 8 kg/mu of urea with the N content of 46% w/w is applied; 2-3 days after the ear emergence of the sweet corn, dressing 10 kg/mu of urea with the N content of 46% w/w; during the period of planting the sweet corn in the second year: when the sweet corn is 2-3 leaves long, dressing 3.3 kg/mu of urea with the N content of 46% w/w; at the 4-5 leaf stage, topdressing K23.3 kg/mu potassium sulfate with 50% w/w of O content and 4.7 kg/mu urea with 46% w/w of N content; in the large-horn mouth period, 5.3 kg/mu of urea with the N content of 46% w/w is applied; 2-3 days after the ear emergence of the sweet corn, 6.7 kg/mu of urea with the N content of 46% w/w is applied; the top dressing method in the period of planting the sweet corns in the third year is consistent with the top dressing method in the period of planting the sweet corns in the second year;
③ topdressing of sweet and crisp peas: in the period of planting sweet and crisp peas in the first year, when 3-4 leaves grow on the sweet and crisp pea seedlings, 8 kg/mu of urea with 46% w/w of N content and 10 kg/mu of compound fertilizer are applied; in the flowering and pod bearing period of the sweet and crisp peas, 5 kg/mu of urea with 46% w/w of N content and P are applied2O515 kg/mu of superphosphate with the content of 16% w/w; in the period of planting sweet and crisp peas in the second year, when 3-4 leaves grow on the sweet and crisp pea seedlings, 5.3 kg/mu of urea with 46% w/w of N content and 3.3 kg/mu of compound fertilizer are applied; in the flowering and pod bearing period of the sweet and crisp peas, 3.3 kg/mu of urea with the N content of 46% w/w and P are applied2O510 kg/mu of calcium superphosphate with the content of 16% w/w; third stepThe top dressing method during the year of planting the sweet and crisp peas is consistent with the top dressing method during the second year of planting the sweet and crisp peas; the N content in the compound fertilizer is 20% w/w, P2O5Content 10% w/w, K2The O content was 20% w/w.
Further, the mango tree seedlings in the step (2) are Kate mango seedlings or three-year mango seedlings, the sweet corns in the step (3) are pure sweet 68, and the sweet and crisp peas are long-life kernel sweet and crisp peas.
Further, the thickness of the weeds covered around the roots of the mango tree seedlings in the step (2) is 2-5 cm.
Further, the method also comprises the following steps of straw utilization: after the pods of the sweet and crisp peas are collected, collecting the sweet corn straws as fuel, and collecting the sweet and crisp pea straws to directly feed the cattle and sheep or feed the cattle and sheep after crushing.
Compared with the prior art, the invention has the beneficial effects that:
1. the method provided by the invention obviously improves the utilization rate of the land in three years at the initial stage of establishing the mango garden, increases the economic income of unit area, interplanting sweet corn in the mango garden, and performing crop rotation on sweet corn and sweet and crisp peas, and after planting for three years, the method increases the benefit by 20.3% compared with the method of simply and continuously interplanting sweet corn in the mango garden, increases the benefit by 92.8% compared with the method of simply and continuously interplanting sweet and crisp peas, and saves the weeding cost by more than 480 yuan per mu each year.
2. According to the method, after the corn is harvested, sweet corn plants are not cut and left in the ground to serve as a support for the sweet and crisp peas to climb, so that the current situation that the cost of building the support is increased when the peas are planted in autumn is reduced, and the cost of the support per mu is saved by 415 yuan.
3. The method greatly reduces the application amount of the pesticide and the chemical fertilizer year by year under the condition of not influencing the crop yield, saves the production cost and simultaneously reduces the pollution of the pesticide and the chemical fertilizer to the environment.
4. According to the method, the sweet corn is interplanted in the mango garden, and the sweet corn and the sweet and crisp peas are subjected to rotation cultivation, so that a good ecological environment is created, the occurrence of plant diseases and insect pests is reduced, the growth of crops is facilitated, and the defects that the plant diseases and insect pests are aggravated and the yield is reduced year by simply and continuously interplanting the sweet and crisp peas in the mango garden are overcome through intercropping and rotation. Under the condition that the application amount of pesticides and chemical fertilizers is reduced year by year, the yield of sweet corn and sweet and crisp pea is not reduced, and is increased year by year, so that the method is an environment-friendly cultivation mode for realizing quality and efficiency improvement of reduced application of chemical fertilizers and pesticides, and has important significance for improving ecological benefits, economic benefits and social benefits of the area and realizing continuous and stable development of modern agriculture.
Detailed Description
The invention is further illustrated by the following specific examples. The pesticides used in the following examples, as well as sweet corn and crisp pea seeds, fertilizer, etc., are commercially available. The following examples are not specifically described as conventional methods.
EXAMPLE 1 Process according to the invention
The embodiment provides a cultivation method for interplanting sweet corn and sweet and crisp peas in a mango garden, which specifically comprises the following steps:
(1) and (3) planting area selection: selecting sandy soil with the average annual temperature of 19-23 ℃, the extreme low temperature of more than or equal to 0 ℃, the annual rainfall of 500-1600 mm, the annual evaporation capacity of 2000-3600 mm, the annual sunshine duration of more than 2000h, the annual sunshine percentage of more than 50%, no waterlogging, the pH value of soil of 5.5-6.7 and good drainage as a planting area.
(2) And (3) mango planting: digging a mango tree planting pond with the specification of 80cm multiplied by 80cm in a planting area, wherein the row spacing of the mango trees is 3m multiplied by 5m, 50kg of decomposed farmyard manure and P are applied to each mango tree planting pond2O51.5kg of calcium superphosphate with the content of 16% w/w and 1.0kg of lime powder, transplanting mango tree seedlings in a mango tree planting pond in 3 months, planting 1 mango tree seedling in each mango tree planting pond, covering the periphery of the root of each mango tree seedling with weeds to retain water after planting, wherein the thickness of the weed covering is 2-5 cm.
(3) Base fertilizer is applied before interplanting sweet corn, sweet corn and sweet and crisp peas for crop rotation
Firstly, before planting sweet corn in the first year, applying 3000 kg/mu of decomposed farmyard manure P on the soil moisture for planting corn2O550 kg/mu of calcium superphosphate with the content of 16% w/w and the content of NUrea 15 kg/mu and K at 46% w/w2Potassium sulfate with O content of 50% w/w 10 kg/mu is used as base fertilizer, and before sweet and crisp peas are sown in the first year, 1500 kg/mu of decomposed farmyard manure and P are applied on the soil moisture sown with the sweet and crisp peas2O5The content of the calcium superphosphate is 16 percent w/w and is 50 kg/mu as base fertilizer.
Secondly, before planting sweet corn in the next year, applying rotten farmyard manure on the moisture of the planted corn at 2000 kg/mu and P2O533.33 kg/mu of superphosphate with the content of 16% w/w and 10 kg/mu of urea with the content of N of 46% w/w and K26.67 kg/mu potassium sulfate with 50% w/w of O content is used as base fertilizer; before sweet and crisp peas are sown in the next year, 1000 kg/mu of decomposed farmyard manure and P are applied to the soil moisture sown with the sweet and crisp peas2O5The content of the calcium superphosphate is 16% w/w, and the calcium superphosphate is 33.33 kg/mu as base fertilizer.
And thirdly, applying base fertilizer before planting sweet corn in the third year and applying base fertilizer before sowing sweet and crisp peas in the third year are the same as the base fertilizer applied in the third step (3).
(4) And (3) interplanting sweet corn, sweet corn and sweet and crisp peas in the mango garden: during three years from the current year to the third year of planting mango tree seedlings, in 4 months each year, sweet corns are planted between rows which are 1m away from two adjacent rows of mango trees, three furrow surfaces with equal width are divided between the rows, the furrow width is 30cm, two rows of corn planting ponds are dug on each furrow, the row spacing is 45cm multiplied by 25cm, after each corn planting pond is watered, a white mulching film is covered on each furrow surface, and then the position of each corn planting pond is subjected to film breaking and sweet corn seedling planting; harvesting sweet corns in the same year after the sweet corns are planted in the same year, wherein the harvesting time is 7 last ten days of each year, harvesting fresh ears of the sweet corns 20-25 days after the sweet corns are pollinated, and leaving sweet corn plants in the ground without harvesting the fresh ears of the sweet corns every time to serve as a support for climbing sweet and crisp peas; removing the white mulching film after harvesting sweet corns every year, intertilling to remove impurities and loosen the soil once in the whole garden, sowing sweet and crisp peas between every two adjacent sweet corn plants of each row of corn plants at the end of 9 months in the year when the sweet corns are harvested each time, pulling a cotton thread between the upper ends of the two adjacent sweet corn plants when the sweet and crisp peas are 10-15 cm high, winding another cotton thread on the sweet and crisp pea stalks between the two adjacent sweet corn plants, and pulling the cotton thread between the upper ends of the two adjacent sweet corn plants; the method comprises the steps of harvesting sweet and crisp peas in the last 12 months of the year when the sweet and crisp peas are planted every year, and harvesting bean pods of the sweet and crisp peas when the seeds of the bean pods of the sweet and crisp peas are full.
(5) And (3) pest control:
firstly, pest and disease control of mango trees: aiming at the prevention and control of fruit flies, during the period from the current year to the third year of planting mango tree seedlings, cleaning a garden before winter every year, binding straws on the trunks of the mango trees to attract fruit fly larvae to pupate, searching fruit fly pupae in bark gaps and soil surfaces of the mango trees, searching once in 6-7 days, uniformly spraying 1200 times of 50% phoxim missible oil into the bark gaps with the fruit fly pupae and the soil surfaces with the fruit fly pupae every time, applying pesticide 1 time every week, applying 40 ml/mu of 50% phoxim missible oil every time, and killing the fruit fly pupae 3 times; a hanging bottle is used for trapping (hanging a trap) adult fruit fly on a mango tree, methyl eugenol is used for resisting 1ml + 1ml of alcohol + 0.05g of trichlorfon to prepare an attractant, 5 traps are hung per mu of land, the male adult fruit fly is trapped by the traps, when the trap traps trap insects reach 3/4 bottles, the insects in the bottles need to be removed, and the bottles are buried in soil in a concentrated mode. Supplementing fly luring agent every 20 days; spraying 2 times of the bacillus thuringiensis 2000 IU/microliter suspending agent on the mango tree in each treetop period, wherein the spraying interval is 7 days, and 400 ml/mu of the bacillus thuringiensis 2000 IU/microliter suspending agent is used for each time.
② preventing and controlling sweet corn diseases and insect pests: spraying 1000 times of solution of 70% thiophanate methyl suspension emulsion on leaf surfaces of the sweet corn in the first year when the sweet corn is planted, continuously spraying for 3 times, wherein the spraying interval is 10 days, and the spraying interval is 50 ml/mu of 70% thiophanate methyl suspension emulsion; spraying 3000 times of 2% abamectin missible oil to plants of spider mites and aphids for 3 times continuously, wherein the spraying interval is 10 days for each time, and the spraying amount of the 2% abamectin missible oil is 25 ml/mu for each time; spraying 4000 times of liquid of 40% quick-acting dicofol emulsifiable solution for the sweet corn borer for 3 times continuously, wherein the spraying interval is 10 days each time, and 40 ml/mu of 40% quick-acting dicofol emulsifiable solution is used for each time; during the period of planting the sweet corns in the second year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet corns during the period of planting the sweet corns in the first year, except that the spraying times are 2; during the period of planting the sweet corns in the third year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet corns during the period of planting the sweet corns in the first year, except that the spraying times are 1.
③ preventing and controlling the pest and disease damage of the sweet and crisp peas: during the period of planting sweet and crisp peas in the first year, spraying 1000 times of liquid of 50 percent carbendazim wettable powder to the sweet and crisp pea plants each time for 3 times, wherein the application interval time is 10 days, and 50 g/mu of 50 percent carbendazim wettable powder is used each time; for bacterial spot disease, 4000 times of liquid of 72% streptomycin soluble powder is sprayed on sweet crisp pea plants for 3 times, the application interval time is 10 days, and 50 g/mu of 72% streptomycin soluble powder is used for each time; spraying sweet and crisp pea plants with 1200 times of 2.5 percent of insecticide emulsifiable concentrate every time for aphids, wherein the application interval time is 10 days for each time, and the insecticide emulsifiable concentrate is killed by 2.5 percent every time by 25 ml/mu; spraying sweet and crisp pea plants with 30ml of 1.8 percent abamectin emulsifiable solution and 60kg of water for each mu of liriomyza at the podding period for 3 times, wherein the application interval time is 10 days; during the period of planting the sweet and crisp peas in the second year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet and crisp peas during the period of planting the sweet and crisp peas in the first year, except that the spraying times are 2 times; during the period of planting the sweet and crisp peas in the third year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet and crisp peas during the period of planting the sweet and crisp peas in the first year, except that the spraying times are 1.
(6) Topdressing:
top dressing of mango trees: in the current year of planting the mango trees, applying top dressing in a hole of 50-80 cm away from the trunks of the mango trees, wherein the top dressing is to apply 0.2kg of urea with the N content of 46% w/w and P to each tree in each hole2O50.1kg of calcium superphosphate with the content of 16% w/w, or 8kg of decomposed farmyard manure is applied to each plant every time or 8kg of biogas liquid fertilizer is applied to each plant every time, the hole-applied top dressing is applied for 3 times a year, and is applied for 1 time every 4 months; with the increase of mango trees, in the second year and the third year of planting the mango trees, the other top dressing methods are the same as the top dressing in the hole of the current year of planting the mango trees except that the top dressing is applied in the hole of the dropping line of the mango crown.
Top dressing of sweet corn: during the period of planting sweet corn in the first year, when the sweet corn is as long as 2 metersIn the leaf period of 3 leaves, 5 kg/mu of urea with the N content of 46% w/w is applied; at the 4-5 leaf stage, topdressing K25 kg/mu potassium sulfate with 50% w/w of O content and 7 kg/mu urea with 46% w/w of N content; in the large-horn mouth period, 8 kg/mu of urea with the N content of 46% w/w is applied; 2-3 days after the ear emergence of the sweet corn, dressing 10 kg/mu of urea with the N content of 46% w/w; during the period of planting the sweet corn in the second year: when the sweet corn is 2-3 leaves long, dressing 3.3 kg/mu of urea with the N content of 46% w/w; at the 4-5 leaf stage, topdressing K23.3 kg/mu potassium sulfate with 50% w/w of O content and 4.7 kg/mu urea with 46% w/w of N content; in the large-horn mouth period, 5.3 kg/mu of urea with the N content of 46% w/w is applied; 2-3 days after the ear emergence of the sweet corn, 6.7 kg/mu of urea with the N content of 46% w/w is applied; the top dressing method in the period of planting the sweet corns in the third year is consistent with the top dressing method in the period of planting the sweet corns in the second year.
③ topdressing of sweet and crisp peas: in the period of planting sweet and crisp peas in the first year, when 3-4 leaves grow on the sweet and crisp pea seedlings, 8 kg/mu of urea with 46% w/w of N content and 10 kg/mu of compound fertilizer are applied; in the flowering and pod bearing period of the sweet and crisp peas, 5 kg/mu of urea with 46% w/w of N content and P are applied2O515 kg/mu of superphosphate with the content of 16% w/w; in the period of planting sweet and crisp peas in the second year, when 3-4 leaves grow on the sweet and crisp pea seedlings, 5.3 kg/mu of urea with 46% w/w of N content and 3.3 kg/mu of compound fertilizer are applied; in the flowering and pod bearing period of the sweet and crisp peas, 3.3 kg/mu of urea with the N content of 46% w/w and P are applied2O510 kg/mu of calcium superphosphate with the content of 16% w/w; the top dressing method during the period of planting the sweet and crisp peas in the third year is consistent with the top dressing method during the period of planting the sweet and crisp peas in the second year. The content of N in the compound fertilizer is 20% w/w, P2O5Content 10% w/w, K2The O content was 20% w/w.
The mango tree seedlings in the step (2) are Kate mango seedlings or three-year mango seedlings, the sweet corns in the step (3) are pure sweet 68, and the sweet and crisp peas are longevity kernel sweet and crisp peas.
(7) Straw utilization: after the pods of the sweet and crisp peas are collected, collecting the sweet corn straws as fuel, and collecting the sweet and crisp pea straws to directly feed the cattle and sheep or feed the cattle and sheep after crushing.
Table 1 yield and value comparison of sweet corn, sweet and crisp peas for example 1 and comparative 1, comparative 2
Note: the yield value (yuan/mu) of the sweet corn is equal to the fresh ear yield of the sweet corn multiplied by 2.8 yuan/kg (field acquisition price).
② the yield of fresh sweet and crisp peas is multiplied by 5.0 yuan/kg (field acquisition price).
③ the single mango tree in the mango garden needs 6 workers in 1 mu of land for weeding in 1 year, each worker needs 80 yuan, after the crops are interplanted, the labor cost (planting, irrigation and the like) for planting sweet corn and sweet and crisp peas can be saved by about 480 yuan per mu of land each year.
Comparative example 1 two-season sweet corn is interplanted in one year in a mango orchard and planted continuously for three years
The cultivation method is basically the same as that of the embodiment 1, and is different in that only sweet corns are interplanted in a mango garden, the cultivation time is two seasons per year, and the first season is 4 months and 7 months; the planting time in the second season is 8 months, harvesting is carried out in 11 months, and the harvested green corn stalks are fed to cattle and sheep after the sweet corn is harvested, or the green corn stalks are processed into silage.
Comparative example 2 sweet and crisp peas were interplanted in mango orchard alone, one season sweet and crisp peas were interplanted one year, and planted continuously for three years
The cultivation method is basically the same as that of the embodiment 1, except that only sweet and crisp peas are interplanted in a mango garden, and one sweet and crisp pea is interplanted in one season in one year. When the peas grow to 10-15 cm high, wood rods 170cm long and 3cm thick are used as the building frames and inserted at two ends of the sweet and crisp peas, the wood rods are buried to 30-40 cm deep, and one wood rod is planted at 2.5 m. The upper ends of two adjacent wood rods are tensioned by thin iron wires, and then the thin cotton wires are wound on the pea stalks and are drawn to the thin iron wires. When the pea seedlings grow to about 70cm, a thin iron wire is transversely pulled at the middle part of the wood rod to fix the pea to grow upwards. 333 wood poles are used per mu, 1 wood pole is counted according to 0.7 yuan, and the cost of the wood pole required per mu is 230 yuan; 25kg of No. 16 fine iron wires, 8 yuan/kg, and the cost of the fine iron wires required per mu is 200 yuan; 2kg of cotton threads are needed per mu, 15 yuan/kg of cotton threads are needed per mu, and the cost of the cotton threads is 30 yuan per mu; the total cost of the bridging wood rod, the iron wire and the cotton wire is 460 yuan (see table 4).
TABLE 2 Effect of pest control on three-year yield of example 1
TABLE 3 Effect of topdressing on three-year yield of example 1
TABLE 4 cost savings in shelving of the present invention as compared to comparative 2 (sweet peas in continuous cropping)
Note: 1 wood pole is counted according to 0.7 yuan; no. 16 fine iron wire 8 yuan/kg; 15 yuan/kg of cotton thread.
The results show that:
1. the method of the invention creates good ecological environment, reduces the occurrence of plant diseases and insect pests and is beneficial to the growth of crops.
According to the method, according to the first year to the third year after the mango tree is fixedly planted, the crown of the young tree is small, the space between rows is large, sweet corn is interplanted in a mango garden, and then the sweet corn and sweet and crisp peas are subjected to crop rotation, so that the purpose of short cultivation and long growth is achieved, the land is fully utilized, the utilization rate of the land is obviously improved, the aggravation of soil environment degradation and the occurrence of plant diseases and insect pests (corn big and small leaf spots and rust diseases) caused by pure continuous cropping sweet corn are reduced, the occurrence of plant diseases and insect pests (such as powdery mildew, rust diseases and root rot diseases) caused by continuous cropping peas is reduced, compared with the first year, the pesticide application is reduced for 1 time in the second year, and the pesticide application is reduced for 2 times in the third year; compared with the first year, the application amount of additional fertilizer 1/3 is reduced in the second year and the third year, under the condition that the application amounts of pesticides and fertilizers are reduced year by year, the yields of sweet corn and sweet crisp pea are not reduced and are increased year by year, and the yields of the sweet corn which is simply continuously planted in the mango garden for three years and the sweet crisp pea which is simply continuously planted in the mango garden for three years are reduced year by year.
2. The method of the invention reduces the application amount of the pesticide and the fertilizer year by year under the condition of not influencing the crop yield, saves the production cost and simultaneously reduces the pollution of the pesticide and the fertilizer to the environment.
3. According to the method, after the corn is harvested, sweet corn plants are not cut and left in the field to serve as supports for the sweet and crisp peas to climb, the production cost of single-crop frame building of the sweet and crisp peas is reduced, and compared with the method of only interplanting the sweet and crisp peas in a mango garden, the frame building cost of the sweet and crisp peas is saved by 415 yuan/mu.
4. According to the method, in the first year, compared with the method of simply interplanting sweet corns in two seasons in one year, the yield value is increased by 742.8 yuan/mu, and compared with the method of simply interplanting sweet and crisp peas, the yield value is increased by 2881.1 yuan/mu; in the second year, compared with the method of simply interplanting sweet corns in two seasons in one year, the yield value is increased by 1263.9 yuan/mu, compared with the method of simply interplanting sweet crisp peas, the yield value is increased by 3362.2 yuan/mu, in the third year, compared with the method of simply interplanting sweet corns in two seasons in one year, the yield value is increased by 1415.2 yuan/mu, and compared with the method of simply interplanting sweet crisp peas, the yield value is increased by 3532.6 yuan/mu. In the initial stage of the mango garden from the first year to the third year after the permanent planting of the mango trees, the method provided by the invention is adopted, and after three years of planting, the benefit is increased by 20.3% on average each year compared with the continuous cropping (interplanting) of sweet corns in the mango garden for three years, and the benefit is increased by 92.8% on average each year compared with the continuous cropping (interplanting) of sweet and crisp peas in the garden for three years.
Claims (4)
1. A rotation cultivation method for interplanting sweet corn, sweet corn and sweet and crisp peas in a mango garden is characterized by comprising the following steps:
(1) and (3) planting area selection: selecting sandy soil with the annual average temperature of 19-23 ℃, the extreme low temperature of more than or equal to 0 ℃, the annual rainfall of 500-1600 mm, the annual evaporation capacity of 2000-3600 mm, the annual sunshine duration of more than 2000h, the annual sunshine percentage of more than 50%, no waterlogging and soil pH value of 5.5-6.7 as a planting area;
(2) and (3) mango planting: digging a mango tree planting pond with the specification of 80cm multiplied by 80cm in a planting area, wherein the row spacing of the mango trees is 3m multiplied by 5m, 50kg of decomposed farmyard manure and P are applied to each mango tree planting pond2O51.5kg of calcium superphosphate with the content of 16% w/w and 1.0kg of lime powder, transplanting mango tree seedlings into a mango tree planting pond in 3-5 months, planting 1 mango tree seedling in each mango tree planting pond, and covering the periphery of the root of each mango tree seedling with weeds to preserve water after planting;
(3) base fertilizer is applied before interplanting sweet corn and before crop rotation of sweet corn and sweet and crisp peas
Firstly, before planting sweet corn in the first year, applying 3000 kg/mu of decomposed farmyard manure P on the soil moisture for planting corn2O550 kg/mu of urea with 16% w/w of calcium superphosphate and 46% w/w of N, 15 kg/mu and K2Potassium sulfate with O content of 50% w/w 10 kg/mu is used as base fertilizer, and before sweet and crisp peas are sown in the first year, 1500 kg/mu of decomposed farmyard manure and P are applied on the soil moisture sown with the sweet and crisp peas2O550kg acre of calcium superphosphate with the content of 16 percent w/w is used as base fertilizer;
secondly, before planting sweet corn in the next year, applying rotten farmyard manure on the moisture of the planted corn at 2000 kg/mu and P2O533.33 kg/mu of superphosphate with the content of 16% w/w and 10 kg/mu of urea with the content of N of 46% w/w and K26.67 kg/mu potassium sulfate with 50% w/w of O content is used as base fertilizer; before sweet and crisp peas are sown in the next year, 1000 kg/mu of decomposed farmyard manure and P are applied to the soil moisture sown with the sweet and crisp peas2O533.33 kg/mu of superphosphate with the content of 16 percent w/w is used as base fertilizer;
thirdly, the base fertilizer applied before the sweet corn is planted in the third year and the base fertilizer applied before the sweet and crisp peas are sowed in the third year are the same as the base fertilizer applied in the third step (3);
(4) and (3) interplanting sweet corn, sweet corn and sweet and crisp peas in the mango garden: during three years from the current year to the third year of planting mango tree seedlings, in 4 months each year, sweet corns are planted between rows which are 1m away from two adjacent rows of mango trees, three furrow surfaces with equal width are divided between the rows, the furrow width is 30cm, two rows of corn planting ponds are dug on each furrow, the row spacing is 45cm multiplied by 25cm, after each corn planting pond is watered, a white mulching film is covered on each furrow surface, and then the position of each corn planting pond is subjected to film breaking and sweet corn seedling planting; harvesting sweet corns in the same year after the sweet corns are planted in the same year, wherein the harvesting time is 7-8 months per year, harvesting fresh ears of the sweet corns 20-25 days after the sweet corns are pollinated, and leaving sweet corn plants in the ground without harvesting the fresh ears of the sweet corns every time to serve as a support for climbing sweet and crisp peas; removing the white mulching film after harvesting sweet corns every year, intertilling to remove impurities and loosen the soil once in the whole garden, sowing sweet and crisp peas between every two adjacent sweet corn plants of each row of corn plants at the end of 9 months in the year when the sweet corns are harvested each time, pulling two cotton threads between the upper ends of the two adjacent sweet corn plants when the sweet and crisp peas are 10-15 cm high, winding another cotton thread on the sweet and crisp pea stalks between the two adjacent sweet corn plants, and pulling the cotton threads onto the cotton threads between the upper ends of the two adjacent sweet corn plants; harvesting sweet and crisp peas from 12 months to 1 month in the next year after the sweet and crisp peas are planted every year, and harvesting sweet and crisp pea pods when the seed of the sweet and crisp peas is full;
(5) and (3) pest control:
firstly, pest and disease control of mango trees: aiming at the prevention and control of fruit flies, during the period from the current year to the third year of planting mango tree seedlings, cleaning a garden before winter every year, binding straws on the trunks of the mango trees to attract fruit fly larvae to pupate, searching fruit fly pupae in gaps of bark of the mango trees and soil surface, searching once in 6-7 days, uniformly spraying 800-1200 times of liquid of 50% phoxim missible oil into the gaps of bark of the mango trees and the soil surface with the fruit fly pupae every time, applying the pesticide 1 time every week, and using 30-40 ml/mu of the 50% phoxim missible oil every time; trapping fruit fly adults on mango trees by using hanging bottles; spraying 2000 IU/microliter of bacillus thuringiensis suspending agent for 1-2 times in each treetop period of the mango tree, wherein the spraying interval time is 6-7 days, and the spraying interval time is 375-450 ml/mu of the bacillus thuringiensis suspending agent for each time;
② preventing and controlling sweet corn diseases and insect pests: in the period of planting the sweet corns in the first year, spraying 1000 times of solution of 70% thiophanate methyl suspending agent 800-; spraying 3000 times of 2% abamectin missible oil to plants of spider mites and aphids for 3 times continuously, wherein the spraying interval is 7-10 days for each time, and the 2% abamectin missible oil is used for 20-25 ml/mu for each time; spraying 4000 times of liquid of 40% quick-acting dicofol emulsifiable solution for the sweet corn borer for 3 times continuously, wherein the spraying interval is 7-10 days each time, and the spraying amount of the 40% quick-acting dicofol emulsifiable solution is 20-40 ml/mu each time; during the period of planting the sweet corns in the second year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet corns during the period of planting the sweet corns in the first year, except that the spraying times are 2; during the period of planting the sweet corns in the third year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet corns during the period of planting the sweet corns in the first year, except that the spraying times are 1;
③ preventing and controlling the pest and disease damage of the sweet and crisp peas: during the period of planting sweet and crisp peas in the first year, spraying 800-1000 times of liquid of 50% carbendazim wettable powder to the sweet and crisp pea plants every time for 3 times, wherein the application interval time is 7-10 days every time, and 40-50 g/mu of 50% carbendazim wettable powder is used every time; for bacterial spot disease, 4000 times of liquid of 72% streptomycin soluble powder is sprayed to sweet and crisp pea plants for 3 times, the application interval time is 7-10 days for each time, and 50-75 g/mu of 72% streptomycin soluble powder is used for each time; spraying sweet and crisp pea plants with 1000-1200 times of 2.5% of insecticide emulsifiable concentrate for aphids for 3 times, wherein the application interval time is 7-10 days, and the 2.5% insecticide emulsifiable concentrate for each time is 15-25 ml/mu; spraying sweet and crisp pea plants by adding 25-30 ml of 1.8% abamectin emulsifiable solution and 45-60 kg of water to each mu of leaf miner in the pod setting period for 3 times, wherein the application interval time is 7-10 days; during the period of planting the sweet and crisp peas in the second year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet and crisp peas during the period of planting the sweet and crisp peas in the first year, except that the spraying times are 2 times; during the period of planting the sweet and crisp peas in the third year, the same medicines and methods are used for preventing and treating the diseases and insect pests of the sweet and crisp peas during the period of planting the sweet and crisp peas in the first year, except that the spraying times are 1 time;
(6) topdressing:
top dressing of mango trees: in the current year of planting the mango trees, applying top dressing in a hole of 50-80 cm away from the trunks of the mango trees, wherein the top dressing is to apply 0.2kg of urea with the N content of 46% w/w and P to each tree in each hole2O50.1kg of calcium superphosphate with the content of 16% w/w, or 5-10 kg of thoroughly decomposed farmyard manure per plant or 5-10 kg of biogas slurry fertilizer per plant, wherein the hole-applied top dressing is applied for 3-4 times a year and is applied for 1 time every 3-4 months; with the increase of mango trees, in the second year and the third year of planting the mango trees, the other top dressing methods are the same as the top dressing in the hole of the current year of planting the mango trees except that the top dressing is applied in the hole of the mango crown in the dropping line;
top dressing of sweet corn: in the period of planting sweet corns in the first year, when the sweet corns are 2-3 leaves long, dressing 5 kg/mu of urea with the N content of 46% w/w; at the 4-5 leaf stage, topdressing K25 kg/mu potassium sulfate with 50% w/w of O content and 7 kg/mu urea with 46% w/w of N content; in the large-horn mouth period, 8 kg/mu of urea with the N content of 46% w/w is applied; 2-3 days after the ear emergence of the sweet corn, dressing 10 kg/mu of urea with the N content of 46% w/w; during the period of planting the sweet corn in the second year: when the sweet corn is 2-3 leaves long, dressing 3.3 kg/mu of urea with the N content of 46% w/w; at the 4-5 leaf stage, topdressing K23.3 kg/mu potassium sulfate with 50% w/w of O content and 4.7 kg/mu urea with 46% w/w of N content; in the large-horn mouth period, 5.3 kg/mu of urea with the N content of 46% w/w is applied; 2-3 days after the ear emergence of the sweet corn, 6.7 kg/mu of urea with the N content of 46% w/w is applied; the top dressing method in the period of planting the sweet corns in the third year is consistent with the top dressing method in the period of planting the sweet corns in the second year;
③ topdressing of sweet and crisp peas: in the period of planting sweet and crisp peas in the first year, when 3-4 leaves grow on the sweet and crisp pea seedlings, 8 kg/mu of urea with 46% w/w of N content and 10 kg/mu of compound fertilizer are applied; in the flowering and pod bearing period of the sweet and crisp peas, 5 kg/mu of urea with 46% w/w of N content and P are applied2O515 kg/mu of superphosphate with the content of 16% w/w; in the period of planting sweet and crisp peas in the second year, when 3-4 leaves grow on the sweet and crisp pea seedlings, 5.3 kg/mu of urea with 46% w/w of N content and 3.3 kg/mu of compound fertilizer are applied; in the flowering and pod bearing period of the sweet and crisp peas, 3.3 kg/mu of urea with the N content of 46% w/w and P are applied2O510 kg/mu of calcium superphosphate with the content of 16% w/w; the top dressing method during the period of planting the sweet and crisp peas in the third year is consistent with the top dressing method during the period of planting the sweet and crisp peas in the second year; the N content in the compound fertilizer is 20% w/w, P2O5Content 10% w/w, K2The O content was 20% w/w.
2. The rotation cultivation method for interplanting sweet corns and sweet and crisp peas in a mango garden as claimed in claim 1, wherein the mango tree seedlings in step (2) are Kate mango seedlings or three-year mango seedlings, the sweet corns in step (3) are pure sweet 68, and the sweet and crisp peas are long-life kernel sweet and crisp peas.
3. The cultivation method for interplanting sweet corn and sweet and crisp peas in a mango garden as claimed in claim 1, wherein the thickness of the weeds covering the periphery of the roots of mango tree seedlings in step (2) is 2-5 cm.
4. The rotation cultivation method for interplanting sweet corn and sweet and crisp peas in a mango garden as claimed in claim 1, further comprising straw utilization: after the pods of the sweet and crisp peas are collected, collecting the sweet corn straws as fuel, and collecting the sweet and crisp pea straws to directly feed the cattle and sheep or feed the cattle and sheep after crushing.
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