CN114097513A - Method for improving citrus fruit setting by using triple early technology - Google Patents
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- 235000020971 citrus fruits Nutrition 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 235000013399 edible fruits Nutrition 0.000 claims abstract description 77
- 238000005507 spraying Methods 0.000 claims abstract description 17
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 claims abstract description 15
- 241000207199 Citrus Species 0.000 claims abstract description 14
- 230000035784 germination Effects 0.000 claims abstract description 14
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 14
- 239000003337 fertilizer Substances 0.000 claims abstract description 13
- 235000015097 nutrients Nutrition 0.000 claims abstract description 9
- 235000010443 alginic acid Nutrition 0.000 claims abstract description 8
- 229920000615 alginic acid Polymers 0.000 claims abstract description 8
- 238000005728 strengthening Methods 0.000 claims abstract description 6
- GTUNMKRGRHOANR-UHFFFAOYSA-N [B].[Ca] Chemical compound [B].[Ca] GTUNMKRGRHOANR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 238000003973 irrigation Methods 0.000 claims abstract description 4
- 230000002262 irrigation Effects 0.000 claims abstract description 4
- 239000011574 phosphorus Substances 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 239000011591 potassium Substances 0.000 claims abstract description 4
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 4
- 230000001737 promoting effect Effects 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims description 21
- 239000002689 soil Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 18
- 239000002420 orchard Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000014759 maintenance of location Effects 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 7
- 229930191978 Gibberellin Natural products 0.000 claims description 4
- IXORZMNAPKEEDV-UHFFFAOYSA-N gibberellic acid GA3 Natural products OC(=O)C1C2(C3)CC(=C)C3(O)CCC2C2(C=CC3O)C1C3(C)C(=O)O2 IXORZMNAPKEEDV-UHFFFAOYSA-N 0.000 claims description 4
- 239000003448 gibberellin Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000003971 tillage Methods 0.000 claims 3
- 230000005094 fruit set Effects 0.000 claims 1
- 235000016709 nutrition Nutrition 0.000 abstract description 10
- 230000035764 nutrition Effects 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 230000005059 dormancy Effects 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 4
- 230000000243 photosynthetic effect Effects 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 13
- 238000004321 preservation Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 244000025254 Cannabis sativa Species 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 230000004720 fertilization Effects 0.000 description 3
- 230000005089 fruit drop Effects 0.000 description 3
- 241001672694 Citrus reticulata Species 0.000 description 2
- 240000002319 Citrus sinensis Species 0.000 description 2
- 235000005976 Citrus sinensis Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013138 pruning Methods 0.000 description 2
- 230000005068 transpiration Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 231100000674 Phytotoxicity Toxicity 0.000 description 1
- 206010035148 Plague Diseases 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 238000010008 shearing Methods 0.000 description 1
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Classifications
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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
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
-
- 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
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0206—Canopies, i.e. devices providing a roof above the plants
-
- 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
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
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- Life Sciences & Earth Sciences (AREA)
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- Botany (AREA)
- Soil Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Fertilizers (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a method for improving citrus fruit setting by applying a triple early technology, which comprises the steps of S1, early root promotion, and irrigating a water-soluble organic fertilizer and a root promoting solution to the roots of citrus trees before germination; s2, irrigating the water-soluble organic fertilizer and the water-soluble compound fertilizer for 2-3 times during the germination period, wherein the irrigation interval does not exceed 2 days; s3, early strengthening shoots, spraying high-phosphorus high-potassium leaf surface topdressing every 7-10 days when the spring shoots spread leaves to the mature stage, and topdressing for 2-3 times; s4, protecting fruits early, and applying calcium boron micro-element fertilizer, algin and brassin to the leaf surface before flowering. The invention promotes the absorption and production of the root system, thereby providing enough nutrition for the citrus fruit tree, avoiding influencing the nutrition supply of the citrus fruit tree due to the dormancy of the root system, promoting the maturity and aging of new shoots, further avoiding the nutrient competition between the shoot flowers and the shoot fruits, leading more nutrition to be used for fruit setting, reducing flower and fruit dropping, improving the photosynthetic efficiency and flower bud quality of the tree body, and enhancing the adverse resistance of the tree body to adverse environment.
Description
Technical Field
The invention relates to the technical field of citrus fruit setting, in particular to a method for improving citrus fruit setting by applying a three-early technology.
Background
The fruit setting of the thunberg navel orange is difficult, the characteristics of drought in winter and spring are presented by combining with local climate, and the relative air humidity of soil and flowering period is low, so that the fruit setting of the thunberg navel orange is not facilitated.
The citrus trees sprout in spring, young shoots grow, flower buds are differentiated in form, flowers and fruits are bloomed, the water requirement is large in the period, if drought occurs in the period, the young shoots sprout irregularly, the sprouting time is delayed, the quality of the flower buds is reduced, the fruit setting is poor, the high temperature of more than 30 ℃ lasting for 3-5 days occurs in the flowering period and the young fruit period, and a large amount of flowers and fruits are dropped and even absolutely harvested for sensitive varieties such as Aiyue 38, Qing and Wenzhou mandarin oranges.
Spring drought. Through rainfall analysis of the Meishan city, the rainfall in the area is abundant, and the annual rainfall is 983-. But the distribution of rainfall is not uniform. The rainfall concentration period is 5-9 months, the rainfall accounts for about 85% of the total annual rainfall, the rainfall in winter and spring only accounts for 15% of the total annual rainfall, no rainfall exists in spring for more than 15 consecutive days, the relative water content of soil is below 60%, and the growth of trees is easy to be hindered.
And (II) abnormal high temperature. During the period from the flowering period to the young fruit period of the citrus, the normal flowering and fruiting of the citrus are affected by the abnormal weather of high temperature of 30 ℃ or more, and the damage of high temperature is greater as the emergence time is earlier. The abnormal flower and fruit dropping caused by the high temperature weather during the period causes the phenomenon of yield loss, which is called the heat damage of the citrus.
Therefore, a method for improving the fruit setting of the citrus by applying the three-early technology is provided to solve the problems.
Disclosure of Invention
The invention aims to solve the problem of low fruit setting rate caused by the influence of spring drought, abnormal high temperature and the like in the prior art, and provides a method for improving citrus fruit setting by using the three-early technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for improving citrus fruit setting by using the triple early technology comprises the steps of S1, early root promotion, and irrigating water-soluble organic fertilizer and root promotion liquid to the roots of citrus trees before germination;
s2, irrigating the water-soluble organic fertilizer and the water-soluble compound fertilizer for 2-3 times during the germination period, wherein the irrigation interval does not exceed 2 days;
s3, early strengthening shoots, spraying high-phosphorus high-potassium leaf surface topdressing every 7-10 days when the spring shoots spread leaves to the mature stage, and topdressing for 2-3 times;
s4, protecting fruits early, and applying calcium boron micro-element fertilizer, algin and brassin to the leaf surface before flowering.
Preferably, the time before germination is selected in the first ten days of 2 months, the time during germination is selected in the first ten days of 3 months, and the time before flowering is selected in the first ten days of 3 months and the first ten days of 4 months.
Preferably, the soil conditioner also comprises deep ploughing soil, wherein the deep ploughing soil comprises deep ploughing soil and improved soil quality;
deeply ploughing soil, and ditching in 9-10 months to guide the root system to expand to the deep layer; when the ditch is dug, the ditch is in one of ring shape, strip shape or radial shape, and the depth of the ditch is 25-45 cm;
improving soil quality, applying organic fertilizer into the ditch, and applying 600/650/700 kg of organic fertilizer per mu.
Preferably, the fruit preservation times are increased, the fruit preservation liquid medicine is sprayed in the last 4 th month and the last 5 th month, the fruit preservation liquid medicine comprises one or more mixed solutions of nutrient solution, brassin, algin and gibberellin 920 which are stirred together, the fruit preservation times are increased or decreased according to the length of high-temperature time of more than 30 ℃, the total fruit preservation times are not more than 5, the adjacent spraying time ranges from 7 days to 14 days, and the concentration of the sprayed fruit preservation liquid medicine is 0.3% -0.5%.
Preferably, in the flowering period, cutting a ring on the main branch, wherein the cutting depth reaches the xylem, the cutting number of turns is 1-5, the cutting width is 0.1-0.2cm, the cut ring-shaped cortex is peeled for one turn, and the peeled opening is bound;
the total cutting times are not more than three, and the time interval between two adjacent cutting times is not more than 20 days.
Preferably, the sunshade net is covered by a black sunshade net with the shading rate of 45% -65%.
Preferably, when the temperature exceeds 30 ℃, the real-time relative humidity of the orchard is measured at 10-16 points, the real-time relative humidity is measured every 1-2 hours, when the relative humidity is lower than 55%, clear water is sprayed to the citrus trees in a spraying mode and atomized on a sunshade net, the real-time measured relative humidity exceeds 58%, and when the relative humidity is higher than 80%, fruit protection liquid medicine with the concentration of 0.5% is sprayed.
Preferably, the wind power is measured, and the number of layers covering the sunshade net is adjusted according to the wind power;
when the wind power is 1-4 grade, the sunshade net is not covered;
when the wind power is 5-6 grades, covering a layer of sunshade net;
when the wind power is more than 7 grades, two layers of sunshade nets are covered.
Compared with the prior art, the invention has the beneficial effects that:
1. through early root promotion, forced dormancy of the root system can be broken, absorption and production of the root system are promoted, so that sufficient nutrition is provided for the citrus fruit tree, influence on nutrition supply of the citrus fruit tree due to the dormancy of the root system is avoided, excessive fertilization can be avoided while the absorption capacity of the root system is improved, fertilizers are saved, and the ecological environment of an orchard is protected;
2. by early strengthening the shoots, the maturity and aging of new shoots can be promoted, and further the nutrient competition between the shoot flowers and the shoot fruits can be avoided, so that more nutrients are used for fruit setting, flower and fruit dropping are reduced, and the fruit setting rate is improved;
3. by early fruit protection, the photosynthetic efficiency and flower bud quality of trees are improved, and the stress resistance of the trees to adverse environments is enhanced, so that the citrus has good growth condition under the condition of high temperature or rainy days, and the fruit setting rate is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
A method for improving citrus fruit setting by using the triple early technology comprises the steps of S1, early root promotion, and irrigating water-soluble organic fertilizer and root promotion liquid to the roots of citrus trees before germination;
s2, irrigating the water-soluble organic fertilizer and the water-soluble compound fertilizer for 2-3 times during the germination period, wherein the irrigation interval does not exceed 2 days;
s3, early strengthening shoots, spraying high-phosphorus high-potassium leaf surface topdressing every 7-10 days when the spring shoots spread leaves to the mature stage, and topdressing for 2-3 times;
s4, protecting fruits early, and applying calcium boron micro-element fertilizer, algin and brassin to the leaf surface before flowering.
The time before germination is selected from the middle and the upper ten days of 2 months, the time during germination is selected from the upper ten days of 3 months, and the time before flowering is selected from the lower ten days of 3 months and the upper ten days of 4 months.
The method has the advantages that the roots are promoted, the sprouts are formed, the tips are strengthened and the fruits are protected in an early time, the grass growing cultivation can be carried out, the benign weeds with dwarf shallow roots are reserved or the proper grass seeds are selected for grass growing cultivation, the direct irradiation of the sun to the land can be reduced, the ground temperature is reduced, the field humidity is increased, and the high-temperature fruit drop can be reduced. According to the experience of Qingshen county, the violet scholaria is planted in 9-10 months, the violet scholaria covers the surface of the orchard in the last 5 th month, the Chinese medicinal herbs in the last 5 th month end up in a pod, and the grass seeds germinate and grow in the current 9 th month.
And (5) performing secondary shearing before flowers appear. The pruning amount is reduced in early spring, pruning with flowers can be carried out, weak flowering branches, cross branches, overlapping branches, insect-plague branches and the like are pruned, evaporation of water on leaf surfaces is reduced, early accumulation of tree bodies is promoted, and the tree vigor is enhanced.
Therefore, the stress resistance of the citrus fruit tree can be improved, the nutrient absorption efficiency is improved, and the nutrients of the tip flowers and the tip fruits are in competition.
The soil is deeply ploughed and improved, and the deeply ploughed and improved soil comprises deeply ploughed soil and improved soil texture; can guide the root system to more deep extension through turning over deeply, promote to form powerful root crowd, strengthen the stress resistance of root system for when fertilizeing, can absorb the fertilizer efficiency more high-efficiently.
Deeply ploughing soil, and ditching in 9-10 months to guide the root system to expand to the deep layer; when the ditch is dug, the ditch is in one of ring shape, strip shape or radial shape, and the depth of the ditch is 25-45 cm;
the annular ditch can effectively guide the root system to develop deeply, the annular ditch can generate a good guide effect on the root system of a fruit tree in a certain area, the strip can generate a good guide effect on a row of fruit trees, the radial ditch can be adjusted in shape according to the position of the fruit tree, the depth of the ditch can be adjusted according to the size of the fruit tree, the depth of the ditch can be set to be different depths such as 25/27/30/32/35/38/40/42/45, and the depth of the ditch can be adjusted according to factors such as the age of the tree, the size of the crown of the tree, the length of lighting time and the like.
Improving soil quality, applying organic fertilizer into the ditch, and applying 600/650/700 kg of organic fertilizer per mu.
Through increasing the fertilizer of different weight, can improve soil property effectively, through promoting the root early moreover, can effectively improve the efficiency of absorbing the fertilizer, the fertilization volume reduces like this, but the growth condition of fruit tree is more ideal, realizes effectively that the festival fertile efficiency that increases.
Increasing the times of fruit preservation, and spraying fruit preservation liquid medicine in the last 4 th and the last 5 th months, wherein the fruit preservation liquid medicine comprises mixed solution formed by stirring one or more of nutrient solution, brassin, algin and gibberellin 920; by increasing the fruit retention times, flower and fruit drops can be reduced, and the brassin, the algin and the gibberellin 920 can have good fruit retention effects.
The fruit preservation frequency is increased or reduced according to the length of the high temperature time above 30 ℃, the total fruit preservation frequency is not more than 5, the adjacent spraying time range is 7-14 days, and the concentration of the fruit preservation liquid medicine is 0.3% -0.5%.
According to the environment temperature, the concentration and the frequency of spraying the fruit protection liquid medicine are adjusted in real time, the total frequency is not more than five times, phytotoxicity caused by overhigh liquid medicine concentration is avoided, more coarse fruits are avoided, the spraying time is adjusted according to the temperature, when the temperature exceeds 30 ℃, the spraying is carried out once every 10-14 days, when the temperature exceeds 35 ℃ for five continuous days, the spraying is carried out once every 7-10 days, and the concentration of the liquid medicine can be adjusted according to the temperature.
In the flowering period, cutting rings on the main branches, wherein the cutting depth reaches the xylem, the number of cutting circles is 1-5, the cutting width is 0.1-0.2cm, the cut ring-shaped cortex is peeled for one circle, and the peeled opening is bound;
the total cutting times are not more than three, and the time interval between two adjacent cutting times is not more than 20 days, so that the fruit trees are protected.
By cutting the ring of the xylem, the citrus can be well reserved for developing fruits on the aspect of nutrition supply, and other unnecessary branches and trunks are prevented from absorbing nutrition, so that enough nutrition is absorbed, flower and fruit dropping can be avoided, and the fruit setting rate is improved;
when the girdling is carried out, the girdling is carried out on a sunny day as much as possible, so that the fruit trees are prevented from being injured or even infected in rainy days, and the fruit trees can be protected by binding after being stripped;
the cutting is generally carried out for 1-3 circles, while for larger branches, 5 circles can be cut, but the cutting width is not too wide, and the cutting is carried out on the premise of not damaging fruit trees.
Covering with a sunshade net, and covering with a black sunshade net with a shading rate of 45% -65%.
Through covering the sunshade net, can reduce the insolate of sunshine.
Measuring the real-time relative humidity of the orchard at 10-16 points when the temperature exceeds 30 ℃, measuring once every 1-2 hours, spraying clear water to the citrus trees when the relative humidity is lower than 55%, atomizing and spraying the clear water onto a sunshade net to enable the real-time measured relative humidity to exceed 58%, and spraying fruit protection liquid medicine with the concentration of 0.5% when the relative humidity is higher than 80%.
When the temperature is high, the humidity in the orchard can be controlled by spraying the clear water, so that the oranges can grow in a more proper environment, the better humidity for the growth of the oranges is 75%, and when the humidity is lower than 50%, the growth of the oranges is more unfavorable, therefore, the atomized clear water is manually sprayed, the humidity in the orchard is improved, the orchard is ensured to be at the proper humidity, and the humidity condition in the orchard can be accurately judged by measuring the humidity;
when rainwater is more in summer, the relative humidity can exceed 80%, so that the fruit protection liquid medicine can be properly sprayed, the growth of oranges is promoted through the liquid medicine, and fruit drop and flower drop are reduced, so that the fruit setting rate is improved.
Measuring the wind power, and adjusting the layer number of the covering sunshade net according to the wind power;
when the wind power is 1-4 grade, the sunshade net is not covered;
when the wind power is 5-6 grades, covering a layer of sunshade net;
when the wind power is more than 7 grades, two layers of sunshade nets are covered.
The gentle breeze can improve the ventilation condition of the tree body, enhance the transpiration, promote the absorption and the transportation of the root system to the water, enhance the photosynthetic efficiency, prevent frost and frost in winter and heat damage in summer, reduce the occurrence of diseases and pests, but the strong breeze is opposite and has more beneficial defects.
Through the wind-force size, come to cover the sunshade net, when wind-force is less, do not cover the sunshade net, just can play good transpiration effect, and when wind-force reaches 5-6 grades, will produce great wind-force, it can block to a certain extent to cover the sunshade net and blow, avoid the influence that the strong wind caused to the fruit tree, and when wind-force was big again, cover double-deck sunshade net, further utilize the sunshade net to alleviate the influence of wind to the fruit tree, thereby can guarantee that the fruit tree root system has better absorption and defeated effect of leading to moisture, thereby improve the rate of bearing fruit, improve the oranges and tangerines output.
According to the invention, through a three-early technology, the forced dormancy of the root system can be broken through early root promotion, and the absorption and production of the root system are promoted, so that sufficient nutrition is provided for the citrus fruit tree, the influence on the nutrition supply of the citrus fruit tree due to the dormancy of the root system is avoided, the absorption capacity of the root system is improved, excessive fertilization can be avoided, the fertilizer is saved, and the ecological environment of an orchard is protected;
by early strengthening the shoots, the maturity and aging of new shoots can be promoted, and further the nutrient competition between the shoot flowers and the shoot fruits can be avoided, so that more nutrients are used for fruit setting, flower and fruit dropping are reduced, and the fruit setting rate is improved;
by early fruit protection, the photosynthetic efficiency and flower bud quality of trees are improved, and the stress resistance of the trees to adverse environments is enhanced, so that the citrus has good growth condition under the condition of high temperature or rainy days, and the fruit setting rate is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A method for improving citrus fruit setting by using the triple early technology is characterized by comprising the following steps;
s1, early rooting, namely irrigating a water-soluble organic fertilizer and a root promoting solution to the roots of the citrus trees before germination;
s2, irrigating the water-soluble organic fertilizer and the water-soluble compound fertilizer for 2-3 times during the germination period, wherein the irrigation interval does not exceed 2 days;
s3, early strengthening shoots, spraying high-phosphorus high-potassium leaf surface topdressing every 7-10 days when the spring shoots spread leaves to the mature stage, and topdressing for 2-3 times;
s4, protecting fruits early, and applying calcium boron micro-element fertilizer, algin and brassin to the leaf surface before flowering.
2. The method of claim 1, wherein the time before germination is selected in the first of 2 months, the time during germination is selected in the first of 3 months, and the time before flowering is selected in the first of 3 months and the first of 4 months.
3. The method of improving citrus fruit set using the triple early technique according to claim 2, further comprising deep tillage soil, the deep tillage soil comprising deep tillage soil and improved soil texture;
deeply ploughing soil, and ditching in 9-10 months to guide the root system to expand to the deep layer; when the ditch is dug, the ditch is in one of ring shape, strip shape or radial shape, and the depth of the ditch is 25-45 cm;
improving soil quality, applying organic fertilizer into the ditch, and applying 600/650/700 kg of organic fertilizer per mu.
4. The method for improving citrus fruit setting by using the triple early technology according to claim 1, wherein the fruit retention times are increased, the fruit retention liquid is sprayed in the late 4 th and late 5 th months, the fruit retention liquid comprises a mixed solution of one or more of nutrient solution, brassin, algin and gibberellin 920 which are stirred together, the fruit retention times are increased or decreased according to the length of the high-temperature time of more than 30 ℃, the total fruit retention times are not more than 5, the adjacent spraying time ranges from 7 days to 14 days, and the concentration of the sprayed fruit retention liquid is 0.3% -0.5%.
5. The method for improving the fruit setting of citrus fruits by applying the triple-early technology according to claim 1, wherein in the flowering period, a ring shape is cut on the main branch, the cutting depth reaches the xylem, the cutting number is 1-5 circles, the cutting width is 0.1-0.2cm, the ring-shaped cut cortex is peeled off for one circle, and the peeled opening is bound after peeling;
the total cutting times are not more than three, and the time interval between two adjacent cutting times is not more than 20 days.
6. The method for improving citrus fruit setting by using the triple early season technology as claimed in claim 4, wherein the covering is performed by covering with a sunshade net, and the covering is performed by covering with a black sunshade net with a shading rate of 45% -65%.
7. The method of claim 6, wherein the real-time relative humidity of the fruit orchard is measured at 10-16 points when the temperature exceeds 30 ℃, every 1-2 hours, and when the relative humidity is less than 55%, the fruit tree is sprayed with clear water, atomized and sprayed onto the sunshade net, so that the real-time relative humidity exceeds 58%, and when the relative humidity is higher than 80%, the fruit retention solution with the concentration of 0.5% is sprayed.
8. The method for improving citrus fruit setting by using the triple early technology according to claim 6, wherein the wind power is measured, and the number of layers covering the sunshade net is adjusted according to the wind power;
when the wind power is 1-4 grade, the sunshade net is not covered;
when the wind power is 5-6 grades, covering a layer of sunshade net;
when the wind power is more than 7 grades, two layers of sunshade nets are covered.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107409924A (en) * | 2017-09-01 | 2017-12-01 | 钟山佳欣果蔬有限责任公司 | A kind of citrus flower and fruit protecting method |
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