CN115918455A - Quinoa-fresh soybean-spinach one-year triple cropping rotation method - Google Patents

Quinoa-fresh soybean-spinach one-year triple cropping rotation method Download PDF

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CN115918455A
CN115918455A CN202310018918.8A CN202310018918A CN115918455A CN 115918455 A CN115918455 A CN 115918455A CN 202310018918 A CN202310018918 A CN 202310018918A CN 115918455 A CN115918455 A CN 115918455A
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quinoa
sowing
year
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spinach
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CN115918455B (en
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李茹
王海候
陶玥玥
陆长婴
金梅娟
周新伟
施林林
沈园
董林林
吕志伟
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Suzhou Academy of Agricultural Sciences
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Abstract

The invention discloses a quinoa-fresh-eating soybean-spinach three-cropping crop rotation method in one year, which is suitable for planting in middle and lower reaches of Yangtze river, wherein firstly, land blocks with sufficient illumination, moderate fertility, flat field blocks and convenient irrigation and drainage are selected in 3-6 months to complete the planting and harvesting of the quinoa; then finishing the planting and harvesting of the fresh-eating soybeans on the harvested land parcel of the chenopodium quinoa in 7-10 months; the spinach is then planted and harvested on the harvested plots of fresh soybeans over a period of 11 months in the year to 2 months in the next year. The rotation mode provided by the technical scheme of the invention not only improves the land utilization rate, but also increases the field output and improves the economic benefit.

Description

Quinoa-fresh soybean-spinach one-year triple cropping rotation method
Technical Field
The invention relates to the technical field of agricultural planting, in particular to a quinoa-fresh soybean-spinach one-year three-cropping rotation method.
Background
In the middle and downstream areas of Yangtze river, the connection of stubble crops before and after spring sowing Chenopodium quinoa is always a more prominent problem in production, at present, a rice-Chenopodium quinoa wheel is mainly used, an open field period of about 100 days from the middle and last ten days of 11 months to the end of 2 months exists in production, and the requirement of increasing the land utilization rate is opposite to the requirement of increasing the land utilization rate.
Therefore, the problem to be solved urgently by the technical personnel in the field is how to provide an improved planting mode to maximize the utilization rate of the chenopodium quinoa planting land.
Disclosure of Invention
In view of the above, the invention provides a one-year three-cropping rotation method of quinoa-fresh-eating soybean-spinach, and the three crops are seamlessly butted in field growth, so that the land utilization rate is greatly improved, and the field income of farmers is increased.
In order to achieve the purpose, the invention adopts the following technical scheme:
a quinoa-fresh soybean-spinach one-year three-cropping rotation method comprises the following steps:
the method comprises the following steps: selecting a land with sufficient illumination, moderate fertility, flat field and convenient irrigation and drainage, and finishing the planting and harvesting of the chenopodium quinoa in 3-6 months;
step two: finishing the planting and harvesting of fresh-eating soybeans on the harvested field of chenopodium quinoa in 7-10 months;
step three: the spinach planting and harvesting are completed on the land after the harvest of fresh-eating soybeans in the period from 11 months in the current year to 2 months in the next year.
Preferably, the first step of growing and harvesting chenopodium quinoa is as follows:
(1.1) fertilizing and soil preparation: cleaning land blocks at the beginning of 2-3 months, uniformly spreading 30-40 kg/mu of ternary compound fertilizer, then ploughing, wherein the ploughing depth is 20-25 cm, leveling and harrowing are performed, furrowing is performed, the width of a furrow surface is 2.5-3 m, the width of a field furrow is 20-25 cm, the depth of the field furrow is 15-20 cm, and drainage ditches at the periphery of the field are cleaned for later use;
(1.2) sowing: sowing on the prepared land blocks in the early 3 months, ditching for hole sowing, wherein the ditch depth is 2-3 cm, the row spacing is 25-35 cm, the plant spacing is 15-20 cm, the sowing amount is 350-450 g/mu, and sowing, earthing and slightly pressing are carried out;
(1.3) field management: on the day of sowing or the next day, watering thoroughly in the field once, thinning the seedlings according to the principle of weak removal, strong retention and small removal and large retention when the seedlings are 8-12 cm high to ensure that 1-2 seedlings are kept in each hole, intertillage weeding simultaneously, applying 15-20 kg/mu of potassium compound fertilizer when the quinoa wheat seedlings reach 8-10 main leaves, and performing pest control during the growth period;
(1.4) timely harvesting: in the middle late 6 months, the chenopodium quinoa leaves gradually turn yellow or red, 85-95% of grains at the ear are completely filled and completely matured, harvested and threshed, and impurities are removed, dried in the sun and stored.
Further, the ternary compound fertilizer element ratio N: P: K =15, and the potassium compound fertilizer element ratio N: P: K = 16.
Further, the pest control specifically comprises: in the middle and later growth period of quinoa, 800-1000 times of 1.8% emamectin benzoate emulsifiable solution can be sprayed on leaf surfaces to prevent and control pests such as noctuid and the like; the 75% chlorothalonil wettable powder 500 times liquid or 69% enoyl manganese zinc wettable powder 800 times liquid is sprayed to prevent and control downy mildew and other diseases.
Preferably, the planting and harvesting of the fresh-eating soybeans in the step two are specifically as follows:
(2.1) land preparation and fertilization: after the chenopodium quinoa is harvested, cleaning field blocks in time, uniformly spreading the ternary compound fertilizer according to 40-50 kg/mu and the organic fertilizer according to 800-1000 kg/mu on the soil surface, then turning over in time, wherein the turning depth is 25-30 cm, and raking for later use;
(2.2) sowing: selecting fresh soybean varieties for hole sowing, wherein the hole distance is 25-30 cm, the row distance is 30-35 cm,3 seeds are sowed in each hole, 2 seedlings are remained, and the sowing amount is 6-7 kg/mu;
(2.3) field management: in the flowering and pod bearing period of the soybeans, 10-15 kg/mu of ternary compound fertilizer is applied, after the soybeans bear pods, 0.5% of composite monopotassium phosphate and 1% of urea mixed solution are sprayed on the leaf surfaces twice, the interval period of the two times is 7-10 d, and pest control is carried out during the growth period;
(2.4) timely harvesting: picking the bean pods as clean water cooking food when the bean pods are enlarged and are not changed in color; picking the processed food before hardening of hull fiber and thickening of seed coat.
Further, the element ratio of the ternary compound fertilizer N: P: K = 15.
Further, the pest control method comprises the following steps: selecting disease-resistant variety (such as Tongbean No. 6), and combining physical prevention and control (such as black light lamp moth-luring) with low-toxicity high-efficiency pesticide chemical prevention and control (such as emamectin benzoate and abamectin leaf surface spraying to prevent and control Lepidoptera pests).
Preferably, the spinach planting and harvesting in the third step are specifically as follows:
(3.1) removing diseased plant and residual leaves in the field in time after the soybean of the previous stubble is harvested at the bottom of 10 months to the beginning of 11 months, applying rotten farmyard manure of 1000-1500 kg/mu and ternary compound fertilizer of 20 kg/mu, deeply turning over for 25cm, leveling the land, ditching and making furrows, wherein the width of each furrow is 2.0m, the width of each furrow is 30cm, the depth of each furrow is 25cm, a shallow transverse ditch is arranged at intervals of 8-10 m, and the furrow ditch, the waist ditch and the circumferential ditch are communicated;
(3.2) seed treatment: selecting varieties with strong cold resistance, strong winterness and late bolting, wherein the purity of the varieties is more than 95.0%, the purity is more than 98.0%, and the germination rate is more than 80%, soaking the seeds in cold water for 12 hours 1d before sowing, then washing off mucilage on the surfaces of the seeds, fishing out and draining for later use;
(3.3) sowing: broadcast sowing or drill sowing is adopted, wherein:
(1) broadcasting: before sowing, fine soil is mixed into the seeds according to the mass ratio of 1:2, the seeds are uniformly stirred and then sown, the seed amount is 4-5 kg/mu, the seeds are firstly uniformly sown on the ridge surface, then 1-2 cm soil is covered on the seeds, and sufficient water is compacted and poured;
(2) drilling: the depth of the ditch is 2.0-2.5 cm, the row spacing is 12-15 cm, the seed consumption is 3.5-4 kg/mu, after sowing, the furrow surface is harrowed, compacted and watered enough water;
(3.4) field management: watering after sowing for 2-3 days, thinning the seedlings when 2-3 true leaves grow out, preferably setting seedlings and watering when the plant spacing is 3-5 cm, setting seedlings and watering when 3-4 true leaves grow out, topdressing for the first time after thinning, and watering in time after fertilizing, wherein the specific method comprises the following steps:
diluting the urea into 0.5-1.0% urea solution, and dressing or broadcasting 12-15 kg/mu urea solution with water; performing secondary topdressing 2 weeks before harvesting, broadcasting according to 15-20 kg/mu of urea, and watering, wherein pest control is performed during the period;
(3.5) timely harvesting: after the period of 6 leaves, the seeds are collected for a plurality of times or once in sunny days according to the requirements.
Further, the element ratio of the ternary compound fertilizer N: P: K = 15.
Further, the pest control is specifically as follows: selecting disease-resistant variety (such as spinach) and combining physical prevention and control (such as yellow leaf aphid luring or silver gray membrane aphid avoiding) with low-toxicity and high-efficiency pesticide chemical prevention and control (such as using 500 times of 58% Redox liquid or 600 times of 75% chlorothalonil liquid for spray control of downy mildew and the like).
According to the technical scheme, compared with the prior art, the invention discloses a one-year triple cropping rotation method of quinoa-fresh-eating soybean-spinach, and has the following beneficial effects:
the technical scheme provided by the invention is suitable for a crop rotation mode of linkage of chenopodium quinoa-fresh-eating soybean-spinach crops in the middle and lower reaches of the Yangtze river, so that the land utilization rate is improved, the field output is increased, and the economic benefit is improved.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the embodiments of the present invention, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The method comprises the following steps: planting and harvesting chenopodium quinoa willd in 3-6 months
(1.1) fertilizing and soil preparation: the method comprises the following steps of selecting land blocks which are sufficient in illumination, moderate in fertility, flat in field blocks and convenient to drain and irrigate, wherein the chenopodium quinoa is not suitable for continuous cropping, the previous crops are suitable for gramineous, leguminous and cucurbitaceous crops, and the land blocks are cleaned up from the bottom of 2 months to the beginning of 3 months, wherein a ternary compound fertilizer (15);
(1.2) sowing: sowing on the prepared land blocks in the beginning of 3 months, ditching and bunch planting, wherein the depth of ditches is 2-3 cm, the row spacing is 25-35 cm, the plant spacing is 15-20 cm, the sowing amount is 350-450 g/mu, and the sowing is covered with soil and slightly pressed;
(1.3) field management: the quinoa is drought-resistant and waterlogged, so that convenience in field irrigation and drainage is ensured, on the day when the quinoa is sowed and covered with soil or the next day, the field is watered for one time to permeate water, so that normal seedling emergence of the quinoa is ensured, when the height of seedlings is 8-12 cm, seedlings are thinned according to the principle of weak removal, strong retention and small retention to ensure that 1-2 plants are kept in each hole, meanwhile, intertillage weeding is carried out, as the quinoa has a large demand for potassium elements, when the quinoa seedlings reach 8-10 true leaves, 15-20 kg/mu of a potassium compound fertilizer (16;
in pest control:
the disease and insect pests of the quinoa at the early growth stage are few, and the quinoa is hardly used for prevention and treatment. The quinoa can be damaged by diseases and pests such as downy mildew and noctuid in the middle and later growth stages, the disease prevention can be carried out by spraying 500-fold liquid of 75% chlorothalonil wettable powder or 800-fold liquid of 69% enoyl-manganese-zinc wettable powder, and the pest control can be carried out by spraying 800-1000-fold liquid of 1.8% emamectin benzoate on leaf surfaces.
(1.4) timely harvesting: in the middle late 6 months, the chenopodium quinoa leaves gradually turn yellow or red, 85-95% of grains at the ear are completely filled and completely matured, harvested and threshed, and impurities are removed, dried in the sun and stored.
Step two: planting and harvesting fresh soybean in 7-10 months:
(2.1) land preparation and fertilization: after the chenopodium quinoa is harvested, cleaning field blocks in time, uniformly spreading organic fertilizer according to a ratio of 40-50 kg/mu and 800-1000 kg/mu on the soil surface, and then turning over in time, wherein the turning depth is 25-30 cm, and raking for later use;
(2.2) sowing: selecting a fresh soybean variety which has good stress resistance and high yield and is cooked with clear water and has fragrant and glutinous taste, sowing 3 seeds in each hole with the hole distance of 25-30 cm and the row distance of 30-35 cm in a hole sowing mode, and reserving 2 seedlings with the sowing amount of 6-7 kg/mu;
(2.3) field management: in the flowering and pod bearing period of soybean, dressing 10-15 kg/mu of ternary compound fertilizer, after the soybean is subjected to pod bearing, spraying the leaf surface twice by using mixed liquor of 0.5% composite potassium dihydrogen phosphate and 1% urea, wherein the interval period of the two times is 7-10 d so as to prevent flower and pod falling, the pod is large and full, and the pest and disease damage prevention is carried out during the growth period;
the specific principle of pest control is as follows:
in the process of using the medicine, the principles of green prevention and control and scientific prevention and control are adhered to, physical prevention and control or biological prevention and control are adopted as far as possible, chemical agents are required to be used for prevention and control, and low-toxicity, high-efficiency and low-residue agents are also selected as principles. Uses the farmland ecosystem as a whole and applies green prevention and control technologies such as ecological regulation, biological prevention and control, physical prevention and control and the like. When the pesticide is used, low-toxicity, low-residue, broad-spectrum and high-efficiency pesticides are selected. The agricultural control mainly refers to selecting disease-resistant improved seeds, cultivating strong seedlings without diseases and insect pests, and the like; the physics mainly comprises the steps of adopting a black light lamp, a high-pressure mercury lamp, a pest sticking plate and the like to trap and kill different types of pests; biological control mainly means controlling plant diseases and insect pests by using microorganisms and natural enemy insects; the chemical prevention and control mainly comprises the prevention and control of crop diseases and insect pests and the like by using chemical insecticidal bactericides, but a safe interval period is ensured.
(2.4) timely harvesting: picking the beans as clear water to cook food when the pods are expanded and are not changed in color; the quick-frozen processed food is picked before the pod shell fiber is hardened and the seed coat is thickened, namely, the quick-frozen processed food is picked in advance when the pod is bright green in color, and the mouth feel and the quality are favorably ensured.
Step three: planting and harvesting spinach from 11 months to 2 months of the year
(3.1) cleaning and removing diseased plants and residual leaves in the field in time after the soybean of the previous crop is harvested from the bottom of 10 months to the beginning of 11 months, applying rotten farmyard manure of 1000-1500 kg/mu and a ternary compound fertilizer (15) of 20 kg/mu, deeply turning over for 25cm, leveling the land, ditching and making furrows, wherein the width of each furrow is 2.0m, the width of each furrow is 30cm, the depth of each furrow is 25cm, a shallow transverse ditch is arranged at intervals of 8-10 m, and the furrow among the furrow ditches, the waist ditches and the circumferential ditches is communicated;
(3.2) seed treatment: selecting a variety with strong cold resistance, strong winter property and late bolting, wherein the purity of the variety is more than 95.0%, the purity is more than 98.0%, the germination rate is more than 80%, and the outer surface of the spinach seed is provided with leather peel, soaking the seed with cold water for 12 hours before sowing in order to improve the germination rate, then washing off mucilage on the surface of the seed, fishing out and draining for later use;
(3.3) sowing: broadcast sowing or drill sowing is adopted; when in sowing, fine soil is mixed in the seeds according to the mass ratio of 1:2 before sowing, the seeds are uniformly stirred and then sown, the seed amount is 4-5 kg/mu, the seeds are firstly sown on the surface of the furrow uniformly, then 1-2 cm of soil is covered on the seeds, and sufficient water is compacted and poured; when in strip sowing, the depth of the furrow is 2.0-2.5 cm, the row spacing is 12-15 cm, the seed consumption is 3.5-4 kg/mu, and after sowing, the furrow surface is harrowed, compacted and watered sufficiently;
(3.4) field management: spinach has shallow root systems which are mostly distributed in a soil layer of more than 30cm, the requirement on water and fertilizer is high in the growth period, watering is carried out after 2-3 days of sowing, seedlings grow out 2-3 true leaves for time-lapse, thinning is required to be protected between seedlings, weak and strong are removed, the plant spacing is 3-5 cm, watering is carried out at fixed seedling time when 3-4 true leaves are grown, topdressing is carried out after thinning, watering is carried out in time after fertilizing, and specifically, urea is diluted into 0.5-1.0% of urea liquid to be applied with water or to be applied with 12-15 kg/mu of urea; performing secondary topdressing 2 weeks before harvesting, broadcasting according to 15-20 kg/mu of urea, and watering, wherein pest control is performed during the period;
the specific principle of pest control is as follows:
spinach serving as leaf vegetables is subjected to strict rules of green prevention and control and scientific prevention and control in the pest control process, physical prevention and control or biological prevention and control are adopted as much as possible, chemical agents are required to be used for prevention and control, low-toxicity, high-efficiency and low-residue agents are selected to be used as the principles, a farmland ecosystem is taken as a whole, and green prevention and control technologies such as ecological regulation, biological prevention and control, physical prevention and control, scientific medicine application and the like are applied. When the pesticide is used, low-toxicity, low-residue, broad-spectrum and high-efficiency pesticides are selected. The agricultural control mainly refers to selecting disease-resistant improved seeds, cultivating strong seedlings without diseases and insect pests and the like; the physics mainly comprises the steps of adopting a black light lamp, a high-pressure mercury lamp, a pest sticking plate and the like to trap and kill different types of pests; biological control mainly means controlling plant diseases and insect pests by using microorganisms and natural enemy insects; the chemical prevention and control mainly comprises the prevention and control of spinach plant diseases and insect pests by using chemical insecticidal bactericides, but a safe interval period is ensured.
(3.5) timely harvesting: spinach is a green leaf vegetable which can be harvested in batches and for many times, and can be harvested for many times or once after growing to 6 leaves according to the growth condition, market conditions and crop rotation requirements. In order to ensure clean spinach in batch harvesting or intermittent picking harvesting in multiple times, the spinach is recommended to be harvested in fine days, and in batch harvesting, the spinach is recommended to be selected to be large and small in each harvesting and to be dense and thin in intervals, so that spinach left in the field is uniformly distributed, sufficient sprouting is facilitated, and the yield is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A quinoa-fresh soybean-spinach one-year three-cropping rotation method is characterized by comprising the following steps:
the method comprises the following steps: selecting a land with sufficient illumination, moderate fertility, flat field and convenient irrigation and drainage, and finishing the planting and harvesting of the chenopodium quinoa in 3-6 months;
step two: finishing the planting and harvesting of the fresh-eating soybeans on the harvested land parcel of the chenopodium quinoa in 7-10 months;
step three: the spinach planting and harvesting is completed on the land after the harvest of the fresh-eating soybeans in the period from 11 months in the year to 2 months in the next year.
2. The quinoa-fresh soybean-spinach one-year triple cropping rotation method as claimed in claim 1, wherein the first quinoa planting and harvesting step is specifically as follows:
(1.1) fertilizing and soil preparation: cleaning land blocks at the beginning of 2-3 months, uniformly spreading 30-40 kg/mu of ternary compound fertilizer, then ploughing, wherein the ploughing depth is 20-25 cm, leveling and harrowing are performed, furrowing is performed, the width of a furrow surface is 2.5-3 m, the width of a field furrow is 20-25 cm, the depth of the field furrow is 15-20 cm, and drainage ditches at the periphery of the field are cleaned for later use;
(1.2) sowing: sowing on the prepared land blocks in the beginning of 3 months, ditching and bunch planting, wherein the depth of ditches is 2-3 cm, the row spacing is 25-35 cm, the plant spacing is 15-20 cm, the sowing amount is 350-450 g/mu, and the sowing is covered with soil and slightly pressed;
(1.3) field management: on the day of sowing or the next day, watering thoroughly in the field once, thinning the seedlings to ensure that 1-2 seedlings are kept in each hole when the height of the seedlings is 8-12 cm, intertillage weeding simultaneously, applying 15-20 kg/mu of potassium compound fertilizer when the quinoa wheat seedlings reach 8-10 true leaves, and performing pest control during the growth period;
(1.4) timely harvesting: in the middle late 6 months, the chenopodium quinoa leaves gradually turn yellow or red, 85-95% of grains at the ear are completely filled and completely matured, harvested and threshed, and impurities are removed, dried in the sun and stored.
3. The one-year three-cropping rotation method of quinoa-fresh-eating soybean-spinach according to claim 2, characterized in that the three-element compound fertilizer comprises the following elements in a ratio of N: P: K = 15.
4. The one-year-three-cropping rotation method for quinoa-fresh-eating soybean-spinach according to claim 2, characterized in that the pest control is specifically as follows: spraying 800-1000 times of 1.8% emamectin benzoate emulsifiable solution on leaf surfaces in the middle and later growth stages of quinoa; spraying with 500 times of solution of 75% chlorothalonil wettable powder or 800 times of solution of 69% enoyl manganese zinc wettable powder.
5. The quinoa-fresh soybean-spinach one-year triple cropping rotation method as claimed in claim 1, wherein the fresh soybean planting and harvesting in the second step are specifically:
(2.1) land preparation and fertilization: after harvesting the chenopodium quinoa of the previous crop, cleaning field blocks in time, uniformly spreading organic fertilizer according to the weight of 40-50 kg/mu and 800-1000 kg/mu on the soil surface, turning over in time with the turning depth of 25-30 cm, and raking for later use;
(2.2) sowing: selecting a fresh soybean variety for hole sowing, wherein the hole distance is 25-30 cm, the row distance is 30-35 cm,3 seeds are sowed in each hole, 2 seedlings are remained, and the sowing quantity is 6-7 kg/mu;
(2.3) field management: in the flowering and pod bearing period of the soybeans, 10-15 kg/mu of ternary compound fertilizer is applied, after the soybeans bear pods, 0.5% of composite monopotassium phosphate and 1% of urea mixed solution are sprayed on the leaf surfaces twice, the interval period of the two times is 7-10 d, and pest control is carried out during the growth period;
(2.4) timely harvesting: picking the beans as clear water to cook food when the pods are expanded and are not changed in color; picking the processed food before hardening of hull fiber and thickening of seed coat.
6. The one-year three-cropping rotation method of quinoa-fresh-eating soybean-spinach according to claim 5, characterized in that the ternary compound fertilizer has the element ratio of N: P: K = 15.
7. The method for one-year triple cropping of quinoa-fresh soybean-spinach according to claim 5, wherein the method for controlling pests comprises: selecting disease-resistant varieties, and combining physical prevention and control with low-toxicity high-efficiency pesticide chemical prevention and control.
8. The quinoa-fresh soybean-spinach three-year-round rotation method as claimed in claim 1, wherein the spinach cultivation and harvesting in the third step are specifically:
(3.1) removing diseased plant and residual leaves in the field in time after the soybean of the previous stubble is harvested at the bottom of 10 months to the beginning of 11 months, applying rotten farmyard manure of 1000-1500 kg/mu and ternary compound fertilizer of 20 kg/mu, deeply turning over for 25cm, leveling the land, ditching and making furrows, wherein the width of each furrow is 2.0m, the width of each furrow is 30cm, the depth of each furrow is 25cm, a shallow transverse ditch is arranged at intervals of 8-10 m, and the furrow ditch, the waist ditch and the circumferential ditch are communicated;
(3.2) seed treatment: selecting a variety with strong cold resistance, strong winterness and late bolting, wherein the purity of the variety is more than 95.0%, the purity is more than 98.0%, and the germination rate is more than 80%, soaking the seeds with cold water for 12h before sowing for 1d, then washing off mucilage on the surfaces of the seeds, fishing out and draining for later use;
(3.3) sowing: broadcast sowing or drill sowing is adopted, wherein:
(1) broadcasting: before sowing, the seeds are mixed with fine soil according to the mass ratio of 1:2, the mixture is stirred uniformly and then sowed, the seed amount is 4-5 kg/mu, the seeds are firstly sowed on the surface of a furrow uniformly, then the seeds are covered with soil for 1-2 cm, compacted and watered sufficiently;
(2) drilling: the depth of the ditch is 2.0-2.5 cm, the row spacing is 12-15 cm, the seed consumption is 3.5-4 kg/mu, after sowing, the furrow surface is harrowed, compacted and watered enough water;
(3.4) field management: watering after sowing for 2-3 days, thinning the seedlings when 2-3 true leaves grow out, fixing the seedlings and watering when 3-4 true leaves grow out at the plant spacing of 3-5 cm, topdressing for the first time after thinning, and watering in time after fertilizing, wherein the specific method comprises the following steps:
diluting the urea into 0.5-1.0% urea solution, and dressing or broadcasting 12-15 kg/mu urea solution with water; performing secondary topdressing 2 weeks before harvesting, broadcasting urea at a rate of 15-20 kg/mu, and watering, wherein pest control is performed during the period;
(3.5) timely harvesting: after the period of 6 leaves, the seeds are collected for a plurality of times or once in sunny days according to the requirements.
9. The one-year three-cropping rotation method of quinoa-fresh-eating soybean-spinach according to claim 8, characterized in that the ternary compound fertilizer has the element ratio of N: P: K = 15.
10. The one-year-three-cropping rotation method for quinoa-fresh-eating soybean-spinach according to claim 8, wherein the pest control is specifically as follows: selecting disease-resistant varieties, and combining physical prevention and control with low-toxicity high-efficiency pesticide chemical prevention and control.
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