CN114916366B - Method for improving freezing resistance and cold resistance of citrus unshiu tree system in fruiting period - Google Patents
Method for improving freezing resistance and cold resistance of citrus unshiu tree system in fruiting period Download PDFInfo
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Abstract
The invention discloses a method for improving freezing resistance and cold resistance of a citrus unshiu tree system in a fruiting period, which comprises the following operations: (1) trimming; (2) flower and fruit management; (3) root Shi Yuhua lingdi microbial agent; (4) spraying Shi Yuhua leaf fertilizer; (5) root fertilizer is applied separately; (6) lime water is applied; on one hand, the method adopts Yuhualing root system bank and Wavefield water flush fertilizer to restore the root system environment, constructs beneficial rhizosphere microorganisms to improve the capability of the root system for storing nutrition, and simultaneously plays a role of self regulation and control to reduce the consumption of nutrition by overground parts and overgrown branches; on the other hand, the Yuhualing foliar fertilizer is adopted to supplement the nutrient requirements of the concentration of the cell sap of the tree body and the soluble solid matters of the fruits aiming at different time points of the citrus reticulata, so that the freezing point of the tree body and the fruits is reduced, the nutrient reserve is provided for cold resistance and freezing resistance, and the occurrence of cold injury is reduced to the greatest extent.
Description
Technical Field
The invention relates to the technical field of citrus unshiu planting, in particular to a method for improving freezing resistance and cold resistance of citrus unshiu tree systems in fruiting period.
Background
The citrus reticulata is a late-maturing hybrid citrus variety, is obtained from the hybrid of Tanpul citrus and Danxi citrus, and can be selected from citrus sinensis, citrus tangerines, hovenia dulcis and citrus aurantium as stock in production, but has grafting incompatibility with the citrus aurantium, and is avoided. The maturation period of the Wo citrus is 2-3 months, and the ugly citrus belongs to spring citrus. Its natural fruit-retaining time can be from about 2 months to 7-8 months.
The growth vigor of the citrus reticulata is strong, the grafting on the citrus reticulata seedlings grows faster, the plant height can reach 1.5m after field planting for 2 years, the crown diameter is 1.05mx1.1m, and the dry thickness at the position 20cm above the grafting port is 3.8cm. The high-replacement tree is easy to germinate a large amount of boughs in the early stage, the boughs grow in one-time drawing mode, the boughs grow vertically, and the rapid formation of crowns is facilitated. The tree crown is in a natural round shape, and the tree shape is gradually opened after the tree crown is obtained. The branch tip has obvious short thorns, the stem is 3.1mm thick, the internode length is 1.8cm, and the thorns are 3-5 mm long. The blade is dense, green, wide and needle-shaped, the tip of the blade is tapered, the blade base is wedge-shaped, the blade edge is full-edge, the wings She Xianxing are 1.8cm long, the length of the blade is 8.4cm, the width of the blade is 3.5cm, and the blade shape index is 2.4.
The low temperature is one of the main reasons that the plants cause serious physiological fruit drop and even death of the citrus trees in the fruiting period, and is classified according to the caused harm, and can be classified into cold injury above 0 ℃ and cold injury below 0 ℃. The cold injury affects the structure and function of cell membranes, soluble salt ions are dissolved out to cause the balance state of the intracellular concentration and the extracellular concentration to be broken, the membrane permeability is increased, the enzyme activity is reduced in a low-temperature environment to reduce the metabolic capacity, the activity of the membrane protein is reduced to cause the cell fluid concentration maintenance system of a plant plasma membrane system to be difficult to restore to balance, and finally a series of metabolic imbalance phenomena are caused. The freeze injury causes dehydration of plant protoplasm, cell gap and internal icing, and even cell death caused by membrane structure and cell wall damage due to ice crystal puncturing of cell membrane.
In Guangxi, in the southern Asia quarter, 1 month is the coldest month in one year in Guangxi, the average minimum air temperature in the northern Guizhou reaches 3-7 ℃, and the other areas are 8-11 ℃. The danger of low-temperature rain, snow and ice is low in Guangxi in the national range, but due to the increase of overwintering crops planted in recent years, the area of China has gradually become one of the main sites of tropical fruits, subtropical fruits and main crops in China. In recent years, global warming has led to increased evaporation and transpiration of water on land and ocean surfaces, and increased water vapor content has directly led to a change in atmospheric material distribution, with the ocean temperature rising on earth, the ocean has transported more water vapor to the atmosphere, which has increased by about 4% since 1970. More water vapor in the atmosphere means more opportunities for storm, the evaporation amount of water is increased, and the water circulation speed is increased, so that the probability of occurrence of strong precipitation, strong convection weather, flood disasters and freezing injury is increased. From the aspect of the temperature change law and the lowest temperature of Guangxi, low-temperature freeze injury or cold injury is not easy to occur, but due to the continuous rising of the water vapor content in the atmosphere in recent years, low-temperature weather often interacts with humid air flow, so that weather disasters of low temperature accompanied with rainfall occur, and the probability of suffering from freeze injury of Guangxi citrus rises year by year.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method with strong cold resistance, which can effectively improve the freezing resistance and the cold resistance of a citrus unshiu tree system in the fruiting period.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a method of enhancing freeze resistance and cold resistance of a citrus system in fruiting stage comprising:
(1) And (3) shaping and pruning:
1.1 When spring tips grow to 5cm, keeping 2-3 strong buds in different directions on each tip, and keeping 6-7 leaves on excessive branches for picking the heart; cutting off all summer tips; uniformly putting autumn tips in the middle ten days of the first 9 months of 8 months, and plastering off sporadic buds; erasing all winter tips;
1.2 A, routinely pruning diseased shoots; pruning the branch tips in winter to ensure that the branch tips are reasonably distributed and keep the ventilation and light transmission of the tree body;
(2) Flower and fruit management: flower and fruit thinning is carried out, and flower and fruit preservation is carried out at the same time, so that the yield of the Vortica tangutica plant is ensured to be 45-55 kg;
(3) Root Shi Yuhua lingdi microbial agent: 1-2 jin of microbial agent for the field of the second physiological fruit-bearing stage strain, promoting the growth of lateral roots to produce cytokinin, relieving the top advantages of overgrowth branches, promoting nutrition diversion and pressing tips with fruits; 2-3 jin of a soil-borne microbial agent is applied to the strain in the autumn tip germination period, and an aqueous fertilizer containing amino acid is sprayed to improve the freezing resistance of the citrus plants;
(4) Applying leaf fertilizer: in spring tip stage Shi Yuhua, the leaf fertilizer No. 1 is used for enhancing cell activity, improving photosynthesis and promoting root growth; in the flowering period Shi Yuhua, the leaf fertilizer No. 2 is used for promoting the differentiation of flower buds; in the young fruit stage Shi Yuhua, the leaf fertilizer No. 2 turns the nutrition growth into reproductive growth, promotes the growth and development of young fruits and improves the fruit yield; fruit enlargement period: spraying an aqueous fertilizer containing amino acid to raise the carbon-nitrogen ratio and the concentration of cell sap and increase the nutrient accumulation of reproductive growth; in the coloring period Shi Yuhua of the Vortica, the leaf fertilizer No. 2 is used for enhancing the cell activity, improving the photosynthesis, promoting the fruit coloring and improving the sugar content of the fruit;
(5) Root fertilizer is applied separately: 4 months per year, xia Shao, carrying out soil rotary tillage, cutting off partial root systems of citrus, 2.0-2.5 kg of Shi Yuhua-element root system bank root system repairing agent, 0.3-0.5 kg of self-made resistance inducing agent, and covering with ground cloth;
the self-made resistance inducer is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has resistance of inducing plants to produce induction, 40-60 parts of shell powder, 30-45 parts of shrimp and crab shell powder and 10-25 parts of yellow meal worm shell powder are adopted, and 0.1-5% potassium hydroxide solution is added according to volume multiple 1 after crushing: 3-1: 8, stirring and fermenting for 12-48 h, regulating the pH value to 4.5-5.5, adding 0.1-1.5 parts of pectase, 0.5-1.5 parts of xylanase, 1.0-2.0 parts of bacillus megaterium with amino oligosaccharide preference and 1.0-2.0 parts of bacillus mucilaginosus, mixing and fermenting for 24h, and then spray drying to obtain the microbial inoculum;
(6) Lime water is applied:
6.1 A protective liquid sprayed before the coloring period of the citrus reticulata to prevent lime water residue and difficult cleaning; the protective solution consists of the following components in parts by weight: 100 parts of water, 1.6 to 1.8 parts of calcium chloride, 4 to 6 parts of sodium alginate, 6 to 8 parts of sodium humate and 3 to 5 parts of chitosan;
6.2 Lime water is sprayed in the coloring period of the citrus reticulata.
Further, the flower and fruit management: flower and fruit thinning and flower and fruit protecting are carried out by adopting a foliar fertilizer Yuhualiing No. 2 and a water-soluble fertilizer for moisturizing the day, so that the yield of the citrus sinensis plant is ensured to be 50-55 kg.
Further, the root Shi Yuhua lingdi microbial agent: 1.5-2 jin of microbial agent for the field of the second physiological fruit drop stage strain, promoting the growth of lateral roots to produce cytokinin, relieving the top advantages of overgrown branches, promoting nutrition diversion and fruit thinning; 2.5-3 jin of the soil-borne microbial agent is applied to the strain in the autumn tip germination period, and the water-soluble fertilizer containing amino acid is sprayed to improve the frost resistance of the citrus plants.
Further, the foliar fertilizer is applied: 150-180 jin of Yuhualiing No. 1 foliar fertilizer with the concentration of 200-300 ppm is applied to acre in spring tip period so as to enhance the cell activity, improve the photosynthesis and promote the root growth; applying 150-180 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 300-500 ppm in the acre of the flowering period so as to promote the differentiation of flower buds; 150-180 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 250-350 ppm is applied to mu in the young fruit period, so that the nutrition growth is changed to reproductive growth, the growth and development of young fruits are promoted, and the fruit yield is improved; fruit enlargement period: applying 120-150 jin of aqueous fertilizer 300 times containing amino acid per mu to increase the carbon-nitrogen ratio and the concentration of cell fluid and increase the nutrient accumulation of reproductive growth; 150-180 jin of Yuhualing No. 2 foliar fertilizer with the concentration of 150-200 ppm is applied to the acre in the coloring period of the citrus reticulata so as to enhance the cell activity, improve the photosynthesis, promote the fruit coloring and improve the sugar content of the fruit.
Further, the root fertilizer is applied separately: weeding the citrus unshiu garden every year in the 4 months, xia Shao extraction period, rotary tillage soil, rotary tillage depth of 30-35 cm, rotary tillage area of 35-45% of total area of the citrus unshiu garden, cutting off partial root system of citrus unshiu, 2.2-2.5 kg of root system repairing agent for root Shi Yuhua, 0.4-0.5 kg of self-made inducer, and covering with ground cloth.
Further, the self-made resistance inducing agent is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has resistance to induction of plant production, 45-60 parts of shell powder, 35-45 parts of shrimp and crab shell powder and 15-25 parts of yellow meal worm shell powder are adopted, and 0.5-5% potassium hydroxide solution is added according to volume multiple 1 after crushing: 4-1: 8, stirring and fermenting for 18-48 h, regulating the pH value to 4.8-5.5, adding 0.3-1.5 parts of pectase, 0.7-1.5 parts of xylanase, 1.4-2.0 parts of bacillus megaterium with amino oligosaccharide preference and 1.5-2.0 parts of bacillus mucilaginosus, mixing and fermenting for 24h, and then spray drying.
Further, the self-made resistance inducing agent is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has resistance inducing plant to obtain, 50 parts of shell powder, 38 parts of shrimp and crab shell powder and 20 parts of yellow mealworm shell powder are adopted, and after crushing, 2.5% potassium hydroxide solution is added according to volume multiple of 1:5, stirring and fermenting for 28h, regulating the pH value to 5.0, adding 0.8 part of pectase, 0.9 part of xylanase, 1.7 parts of bacillus megaterium with amino oligosaccharide preference and 1.8 parts of bacillus mucilaginosus into the mixture, mixing and fermenting for 24h, and then spray drying the mixture to obtain the microbial inoculum.
Further, the protection liquid consists of the following components in parts by weight: 100 parts of water, 1.7-1.8 parts of calcium chloride, 5-6 parts of sodium alginate, 7-8 parts of sodium humate and 4-5 parts of chitosan; the protective liquid which is used for preventing lime water residue and is difficult to clean is sprayed for 1 to 3 times before the coloring period of the Vortica oranges, and each time is separated by 6 hours.
Further, the protective liquid also comprises 0.12 to 0.15 weight part of alliin.
Further, the protective liquid also comprises 0.13 to 0.15 weight part of alliin.
According to the method for improving the freezing resistance and cold resistance of the citrus unshiu tree system in the fruiting period, the yield of citrus unshiu plants is excessive, the nutrient reserve of the tree body is insufficient, the cold resistance and disease resistance of the tree body are weak, the cold resistance of citrus unshiu is greatly reduced, flower thinning and fruit thinning are carried out, flower and fruit preservation are carried out, the yield of citrus unshiu plants is ensured to be 45-55 kg, the yield of citrus unshiu plants is ensured, meanwhile, the occurrence of cold injury is reduced to the greatest extent, and the economic benefit is high.
According to the method for improving the freezing resistance and cold resistance of the citrus reticulata tree system in the fruiting period, the root Shi Yuhua is a root microbial agent, the requirements of organic nutrition accumulation and rapid storage of citrus reticulata are met, a good rhizosphere microbial environment of citrus reticulata is constructed, growth of side roots of citrus reticulata is promoted to exert the effect of regulating and controlling the top end dominance, at the same time, chlorophyll content of leaves is improved, photosynthesis rate is promoted, the organic nutrition accumulation speed of a tree body is accelerated, the reproductive growth is promoted, the contradiction between fruits is solved, the concentration of tree body cell fluid and the content of fruit soluble solids are improved, and the sufficient organic nutrition storage is provided for improving the cold resistance and disease resistance of the tree body; the Yuhualiang Wobbe microbial agent can be slowly released, so that the annual soil cation content of a Wobbe garden is kept at 0.3-0.7%, the soil cation content is not lower than 0.3%, the requirements of Wobbe on fertility can be met, rooting and leaf expanding of Wobbe are promoted, the chlorophyll content of leaves is improved, photosynthesis is promoted, more glucose is synthesized, nutrients are reserved in auxiliary trees, and the cold resistance and disease resistance of the trees are improved.
According to the method for improving the freezing resistance and cold resistance of the citrus system in the fruiting period, the leaf fertilizer Shi Yuhua Ling No. 1 in the spring tip period can enhance the cell activity and improve the photosynthesis; the foliar fertilizer No. 2 in the flowering period Shi Yuhua can promote the differentiation of flower buds; in the young fruit stage Shi Yuhua, the leaf fertilizer No. 2 can change the nutrition growth into reproductive growth, promote the growth and development of young fruits and increase the fruit yield; fruit enlargement period: spraying an aqueous fertilizer containing amino acid to raise the carbon-nitrogen ratio and the concentration of cell sap and increase the nutrient accumulation of reproductive growth; in the coloring period Shi Yuhua Ling No. 2 foliar fertilizer of the citrus reticulata, the cell activity can be enhanced, the photosynthesis can be improved, the fruit coloring can be promoted, and the sugar content of the fruit can be improved; through a series of foliar fertilizer application management, the rooting and leaf expanding of the citrus reticulata can be promoted to the greatest extent, the chlorophyll content of leaves is improved, photosynthesis is promoted, more glucose is synthesized, the nutrient is reserved for the tree body, and the cold damage resistance and disease resistance of the tree body are improved.
According to the method for improving the frost resistance and cold resistance of the citrus unshiu tree system in the fruiting period, soil is rotary-tilled, root system restoration agent and self-made resistance inducing agent are applied to cut off partial old roots, the old roots are helped to heal, the new-born lateral roots are promoted to grow quickly, on one hand, the function of enhancing the nutrition of the root system for storing the root system is used for cold-resistant storage, on the other hand, the water absorption function is exerted to resist leaf curling and drying up caused by rapid transpiration and water loss of leaf surfaces due to cold injury, and therefore invasion of low-temperature meteorological disasters to citrus unshiu trees in the fruiting period is prevented; spraying lime water in the coloring period of the citrus reticulata can play a role in preventing insect damage and sunburn, reducing the using amount of pesticides and the like, but also has the problem that lime water residues are difficult to clean, the lime water residues are unfavorable for many consumers, the yield and income of fruit farmers are not favorable, a layer of non-toxic and harmless film can be formed on the surface of citrus reticulata fruits by spraying protective liquid which is used for preventing the lime water residues from being difficult to clean before the coloring period of the citrus reticulata, then lime water is sprayed, and the lime water residues can be removed by slightly cleaning with water, so that the operation is simple and easy, and the quality of the citrus reticulata can be further improved.
According to the method for improving the freezing resistance and the cold resistance of the citrus reticulata tree system in the fruiting period, the cold resistance and the freezing resistance of the citrus reticulata in the fruiting period are truly improved from the aspects of nutrition management and resistance of crops, on one hand, a Yuhualing root system bank and a Wavefield water flush fertilizer are adopted to restore the root system environment, rhizosphere beneficial microorganisms are constructed to improve the capacity of the root system for storing nutrition, and meanwhile, the self regulation and control effect is exerted to reduce the consumption of overground part overgrown branches to nutrition; on the other hand, the foliar fertilizer of Yuhualing is adopted to supplement the nutrient requirements of the concentration of the cell fluid and the soluble solid matters of the fruits of the trees aiming at different time points of the citrus reticulata, so that the freezing point of the trees and the fruits is reduced, and nutrient storage is provided for cold resistance and freezing resistance; the alliin is added into the protective liquid, so that pockmark on the surface of the citrus reticulata fruit can be reduced, meanwhile, the skin of the citrus reticulata fruit is brighter, and the quality of the citrus reticulata is further improved.
Detailed Description
The following examples will assist those skilled in the art in a more complete understanding of the invention, but are not intended to limit the invention in any way.
The invention relates to a method for improving freezing resistance and cold resistance of a citrus system in a fruiting period, which is characterized in that a Yuhualilingwovens microbial agent, a Yuhualiancontaining amino acid water-soluble fertilizer, yuhualiling1 leaf fertilizer, yuhualiling2 leaf fertilizer and Yuhualianling root system bank root system restoration agent can be purchased in the market.
According to the method for improving the freezing resistance and cold resistance of the citrus reticulata system in the fruiting period, in the preparation process of the self-made resistance inducing agent, the addition amount of 0.1% -5% potassium hydroxide solution is 3-8 times of the powder volume formed by mixing shell powder, shrimp and crab shell powder and yellow meal worm shell powder; the pectase, xylanase, bacillus megaterium with amino-oligosaccharide preference and bacillus mucilaginosus can be purchased in the market.
The test site is Guangxi Guilin, which belongs to subtropical climate, has mild climate, abundant rainfall, average annual rainfall of 1900 mm, about 300 days without frost in the whole year, average daily irradiation for more than 1550 hours, average temperature of 19 ℃, no severe cold in winter and no hot summer in summer; the experimental time was 2019.
Example 1
A method of enhancing freeze resistance and cold resistance of a citrus system in fruiting stage comprising:
(1) And (3) shaping and pruning:
1.1 When spring tips grow to 5cm, keeping 2-3 strong buds in different directions on each tip, and keeping 6-7 leaves on excessive branches for picking the heart; cutting off all summer tips; uniformly putting autumn tips in the middle ten days of the first 9 months of 8 months, and plastering off sporadic buds; erasing all winter tips;
1.2 A, routinely pruning diseased shoots; pruning the branch tips in winter to ensure that the branch tips are reasonably distributed and keep the ventilation and light transmission of the tree body;
(2) Flower and fruit management: flower and fruit thinning is carried out, and meanwhile, a foliar fertilizer Yuhualiing No. 2 is sprayed, and a water-soluble fertilizer is moistened to carry out flower and fruit preservation, so that the yield of the citrus sinensis plant is ensured to be 45kg;
(3) Root Shi Yuhua lingdi microbial agent: applying a field microbial agent 1 jin along a fruit tree drip line projection plant in the second physiological fruit dropping period, promoting growth of lateral roots to generate cytokinin, relieving top advantages of overgrown branches, promoting nutrition diversion and pressing tips with fruits; 2 jin of a ground microbial agent is applied along the projection strain of the drip line of the fruit tree in the autumn tip germination period, and 300 times of aqueous solution containing amino acid is sprayed at the same time to improve the freezing resistance of the citrus sinensis plant;
(4) Applying leaf fertilizer: applying a foliar fertilizer 150 jin of Yuhualiing No. 1 with the concentration of 200ppm in the spring tip period to enhance the cell activity, improve the photosynthesis and promote the root growth; applying a foliar fertilizer 150 jin of Yuhualiing No. 2 with the concentration of 300ppm in the mu of the flowering period to promote the differentiation of flower buds; 150 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 250ppm is applied to mu in the young fruit period, so that the vegetative growth is changed to reproductive growth, the growth and development of young fruits are promoted, and the fruit yield is improved; fruit enlargement period: applying 120 jin of aqueous fertilizer containing amino acid 300 times per mu to increase the carbon-nitrogen ratio and the concentration of cell sap, and increasing the nutrient accumulation of reproductive growth; 150 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 150ppm is applied to the acre in the coloring period of the Vortica, so as to enhance the cell activity, improve the photosynthesis, promote the fruit coloring and improve the sugar content of the fruit;
(5) Root fertilizer is applied separately: weeding the citrus unshiu orchard every year in the 4 months, xia Shao extraction period, rotary tillage soil, rotary tillage depth of 30-35 cm, rotary tillage area of 35-45% of total area of the citrus unshiu orchard, cutting off partial root system of citrus unshiu, 2.2kg of root Shi Yuhua root system bank root system repairing agent, 0.4kg of self-made resistance inducing agent and covering with ground cloth;
the self-made resistance inducer is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has resistance of inducing plants to produce induction, and is prepared by crushing 40 parts of shell powder, 30 parts of shrimp and crab shell powder and 10 parts of yellow meal worm shell powder, and adding 0.1% potassium hydroxide solution according to volume multiple of 1:3, stirring and fermenting for 12 hours, regulating the pH value to 4.5, adding 0.1 part of pectase, 0.5 part of xylanase, 1.0 part of bacillus megatherium with amino oligosaccharide preference and 1.0 part of bacillus mucilaginosus into the mixture, mixing and fermenting for 24 hours, and then spray drying the mixture to obtain the microbial inoculum;
(6) Lime water is applied:
6.1 Spraying protective liquid for preventing lime water residue which is difficult to clean 1 time before the coloring period of the citrus reticulata, wherein each time is 6 hours apart; the protective solution consists of the following components in parts by weight: 100 parts of water, 1.6 parts of calcium chloride, 4 parts of sodium alginate, 6 parts of sodium humate, 3 parts of chitosan and 0.12 part of alliin;
6.2 Lime water is sprayed in the coloring period of the citrus reticulata.
The cold resistance and fruit condition of the citrus reticulata were observed, and the statistical results are shown in table 1 below.
TABLE 1
Example 2
A method of enhancing freeze resistance and cold resistance of a citrus system in fruiting stage comprising:
(1) And (3) shaping and pruning:
1.1 When spring tips grow to 5cm, keeping 2-3 strong buds in different directions on each tip, and keeping 6-7 leaves on excessive branches for picking the heart; cutting off all summer tips; uniformly putting autumn tips in the middle ten days of the first 9 months of 8 months, and plastering off sporadic buds; erasing all winter tips;
1.2 A, routinely pruning diseased shoots; pruning the branch tips in winter to ensure that the branch tips are reasonably distributed and keep the ventilation and light transmission of the tree body;
(2) Flower and fruit management: flower and fruit thinning is carried out, and meanwhile, a foliar fertilizer Yuhualiing No. 2 is sprayed, and a water-soluble fertilizer is moistened to carry out flower and fruit preservation, so that the yield of the citrus sinensis plant is ensured to be 55kg;
(3) Root Shi Yuhua lingdi microbial agent: applying 2 jin of ground microorganism microbial inoculum along the drip line projection strain of the fruit tree in the second physiological fruit dropping period, promoting the growth of lateral roots to generate cytokinin, relieving the top advantages of overgrown branches, promoting nutrition diversion and pressing tips with fruits; 3 jin of a field microbial agent is applied along the projection plant of the drip line of the fruit tree in the autumn tip germination period, and 300 times of aqueous solution containing amino acid is sprayed at the same time to improve the freezing resistance of the citrus sinensis plant;
(4) Applying leaf fertilizer: 180 jin of Yuhualiing No. 1 foliar fertilizer with the concentration of 300ppm is applied to acre in spring tip period so as to enhance the activity of cells, improve photosynthesis and promote root system growth; 180 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 500ppm is applied to acre in the flowering period so as to promote flower bud differentiation; 180 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 350ppm is applied to mu in the young fruit period, so that the vegetative growth is changed to reproductive growth, the growth and development of young fruits are promoted, and the fruit yield is improved; fruit enlargement period: applying 150 jin of aqueous fertilizer containing amino acid to increase the carbon-nitrogen ratio and the concentration of cell fluid, and increasing the nutrient accumulation of reproductive growth; 180 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 200ppm is applied to the acre in the coloring period of the Vortica, so as to enhance the cell activity, improve the photosynthesis, promote the fruit coloring and improve the sugar content of the fruit;
(5) Root fertilizer is applied separately: weeding the citrus unshiu orchard every year in the 4 months, xia Shao extraction period, rotary tillage soil, rotary tillage depth of 30-35 cm, rotary tillage area of 35-45% of total area of the citrus unshiu orchard, cutting off partial root system of citrus unshiu, 2.5kg of root Shi Yuhua-root system bank root system repairing agent, 0.5kg of self-made resistance inducing agent and covering with ground cloth;
the self-made resistance inducer is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has resistance of inducing plants to produce induction, 60 parts of shell powder, 45 parts of shrimp and crab shell powder and 25 parts of yellow meal worm shell powder are adopted, and 5% potassium hydroxide solution is added according to volume multiple 1 after crushing: 8, stirring and fermenting for 48 hours, regulating the pH value to 5.5, adding 1.5 parts of pectase, 1.5 parts of xylanase, 2.0 parts of bacillus megatherium with amino oligosaccharide preference and 2.0 parts of bacillus mucilaginosus into the mixture, mixing and fermenting for 24 hours, and then spray drying the mixture to prepare the microbial agent;
(6) Lime water is applied:
6.1 Spraying protective liquid for preventing lime water residue which is difficult to clean 3 times before the coloring period of the Vortichment, wherein each time is 6 hours; the protective solution consists of the following components in parts by weight: 100 parts of water, 1.8 parts of calcium chloride, 6 parts of sodium alginate, 8 parts of sodium humate, 5 parts of chitosan and 0.15 part of alliin;
6.2 Lime water is sprayed in the coloring period of the citrus reticulata.
The cold resistance and fruit condition of the citrus reticulata were observed, and the statistical results are shown in table 2 below.
TABLE 2
Example 3
A method of enhancing freeze resistance and cold resistance of a citrus system in fruiting stage comprising:
(1) And (3) shaping and pruning:
1.1 When spring tips grow to 5cm, keeping 2-3 strong buds in different directions on each tip, and keeping 6-7 leaves on excessive branches for picking the heart; cutting off all summer tips; uniformly putting autumn tips in the middle ten days of the first 9 months of 8 months, and plastering off sporadic buds; erasing all winter tips;
1.2 A, routinely pruning diseased shoots; pruning the branch tips in winter to ensure that the branch tips are reasonably distributed and keep the ventilation and light transmission of the tree body;
(2) Flower and fruit management: flower and fruit thinning is carried out, and meanwhile, a foliar fertilizer Yuhualiing No. 2 is sprayed, and a water-soluble fertilizer is moistened to carry out flower and fruit preservation, so that the yield of the citrus sinensis plant is ensured to be 50kg;
(3) Root Shi Yuhua lingdi microbial agent: the second physiological fruit dropping period projects 1.5 jin of strain construction field microbial agent along the drip line of the fruit tree, promotes the growth of lateral roots to produce cytokinin, removes the top advantages of overgrowth branches, promotes nutrition diversion and tips pressing with fruits; 2.5 jin of a land microbial agent is applied along the drip line projection strain of the fruit tree in the autumn tip germination period, and 300 times of aqueous solution containing amino acid is sprayed to improve the freezing resistance of the citrus sinensis plant;
(4) Applying leaf fertilizer: 160 jin of Yuhualiing No. 1 foliar fertilizer with the concentration of 250ppm is applied to acre in spring tip period so as to enhance the activity of cells, improve photosynthesis and promote root system growth; 160 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 400ppm is applied to each mu in the flowering period so as to promote flower bud differentiation; 170 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 280ppm is applied to mu in the young fruit period, so that the vegetative growth is changed to reproductive growth, the growth and development of young fruits are promoted, and the fruit yield is improved; fruit enlargement period: applying 130 jin of aqueous fertilizer containing amino acid to increase the carbon-nitrogen ratio and the concentration of cell fluid, and increasing the nutrient accumulation of reproductive growth; 160 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 170ppm is applied to the acre in the coloring period of the Vortica, so as to enhance the cell activity, improve the photosynthesis, promote the fruit coloring and improve the sugar content of the fruit;
(5) Root fertilizer is applied separately: weeding the citrus unshiu orchard every year in the 4 months, xia Shao extraction period, rotary tillage soil, rotary tillage depth of 30-35 cm, rotary tillage area of 35-45% of total area of the citrus unshiu orchard, cutting off partial root system of citrus unshiu, 2.2kg of root Shi Yuhua root system bank root system repairing agent, 0.4kg of self-made resistance inducing agent and covering with ground cloth;
the self-made resistance inducer is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has resistance of inducing plants to produce induction, 45 parts of shell powder, 35 parts of shrimp and crab shell powder and 15 parts of yellow meal worm shell powder are adopted, and 0.5% potassium hydroxide solution is added according to volume multiple of 1:4, stirring and fermenting for 18h, regulating the pH value to 4.8, adding 0.3 part of pectase, 0.7 part of xylanase, 1.4 parts of bacillus megatherium with amino oligosaccharide preference and 1.5 parts of bacillus mucilaginosus into the mixture, mixing and fermenting for 24h, and then spray drying the mixture to obtain the microbial inoculum;
(6) Lime water is applied:
6.1 Spraying protective liquid for preventing lime water residue and being difficult to clean for 2 times before the coloring period of the Vortichment, wherein each time is 6 hours; the protective solution consists of the following components in parts by weight: 100 parts of water, 1.7 parts of calcium chloride, 5 parts of sodium alginate, 7 parts of sodium humate, 4 parts of chitosan and 0.13 part of alliin;
6.2 Lime water is sprayed in the coloring period of the citrus reticulata.
The cold resistance and fruit condition of the citrus reticulata were observed, and the statistical results are shown in table 3 below.
TABLE 3 Table 3
Example 4
A method of enhancing freeze resistance and cold resistance of a citrus system in fruiting stage comprising:
(1) And (3) shaping and pruning:
1.1 When spring tips grow to 5cm, keeping 2-3 strong buds in different directions on each tip, and keeping 6-7 leaves on excessive branches for picking the heart; cutting off all summer tips; uniformly putting autumn tips in the middle ten days of the first 9 months of 8 months, and plastering off sporadic buds; erasing all winter tips;
1.2 A, routinely pruning diseased shoots; pruning the branch tips in winter to ensure that the branch tips are reasonably distributed and keep the ventilation and light transmission of the tree body;
(2) Flower and fruit management: flower and fruit thinning is carried out, and meanwhile, a foliar fertilizer Yuhualiing No. 2 is sprayed, and a water-soluble fertilizer is moistened to carry out flower and fruit preservation, so that the yield of the citrus sinensis plant is ensured to be 50kg;
(3) Root Shi Yuhua lingdi microbial agent: the second physiological fruit dropping period projects 1.5 jin of strain construction field microbial agent along the drip line of the fruit tree, promotes the growth of lateral roots to produce cytokinin, removes the top advantages of overgrowth branches, promotes nutrition diversion and tips pressing with fruits; 2.5 jin of a land microbial agent is applied along the drip line projection strain of the fruit tree in the autumn tip germination period, and 300 times of aqueous solution containing amino acid is sprayed to improve the freezing resistance of the citrus sinensis plant;
(4) Applying leaf fertilizer: 160 jin of Yuhualiing No. 1 foliar fertilizer with the concentration of 250ppm is applied to acre in spring tip period so as to enhance the activity of cells, improve photosynthesis and promote root system growth; applying 170 jin of foliar fertilizer with the concentration of 400ppm Yuhualing No. 2 in the mu of the flowering period to promote the differentiation of flower buds; 170 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 290ppm is applied to mu in the young fruit period, so that the vegetative growth is changed to reproductive growth, the growth and development of young fruits are promoted, and the fruit yield is improved; fruit enlargement period: applying 140 jin of aqueous fertilizer containing amino acid 300 times per mu to increase the carbon-nitrogen ratio and the concentration of cell sap, and increasing the nutrient accumulation of reproductive growth; 170 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 170ppm is applied to the acre in the coloring period of the Vortica, so as to enhance the cell activity, improve the photosynthesis, promote the fruit coloring and improve the sugar content of the fruit;
(5) Root fertilizer is applied separately: weeding the citrus unshiu orchard every year in the 4 months, xia Shao extraction period, rotary tillage soil, rotary tillage depth of 30-35 cm, rotary tillage area of 35-45% of total area of the citrus unshiu orchard, cutting off partial root system of citrus unshiu, 2.2kg of root Shi Yuhua root system bank root system repairing agent, 0.4kg of self-made resistance inducing agent and covering with ground cloth;
the self-made resistance inducer is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has resistance of inducing plants to produce induction, 50 parts of shell powder, 38 parts of shrimp and crab shell powder and 20 parts of yellow meal worm shell powder are adopted, and after crushing, 2.5% potassium hydroxide solution is added according to volume multiple of 1:5, stirring and fermenting for 28h, regulating the pH to 5.0, adding 0.8 part of pectase, 0.9 part of xylanase, 1.7 parts of bacillus megatherium with amino oligosaccharide preference and 1.8 parts of bacillus mucilaginosus into the mixture, mixing and fermenting for 24h, and then spray drying the mixture to obtain the microbial inoculum;
(6) Lime water is applied:
6.1 Spraying protective liquid for preventing lime water residue and being difficult to clean for 2 times before the coloring period of the Vortichment, wherein each time is 6 hours; the protective solution consists of the following components in parts by weight: 100 parts of water, 1.7 parts of calcium chloride, 5 parts of sodium alginate, 7 parts of sodium humate and 4 parts of chitosan;
6.2 Lime water is sprayed in the coloring period of the citrus reticulata.
The cold resistance and fruit condition of the citrus reticulata were observed, and the statistical results are shown in table 4 below.
TABLE 4 Table 4
Comparative example 1
The procedure of comparative example 1, which is a procedure for improving the freezing resistance and cold resistance of a citrus system in fruiting period, except for (4) the procedure for applying foliar fertilizer, the remaining procedures of (1) to (3) and (5) to (6) were the same as in example 3; specifically, the operation method of applying the foliar fertilizer in (4) in comparative example 1 is as follows: 180 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 500ppm is applied to acre in spring-tipped period, summer-tipped period, autumn-tipped period and winter-tipped period respectively.
The cold resistance and fruit condition of the citrus reticulata were observed, and the statistical results are shown in table 5 below.
TABLE 5
Comparative example 2
The methods of (1) - (2) and (4) - (6) for improving the freezing resistance and cold resistance of the citrus system in fruiting period are the same as in example 3, but the (3) root Shi Yuhua lingdi microbial agent is not performed; specifically, in comparative example 2, the microorganism bacterium agent was not activated Shi Yuhua.
The cold resistance and fruit condition of the citrus reticulata were observed, and the statistical results are shown in table 6 below.
TABLE 6
Comparative example 3
The operation methods (1) - (4) and (6) of the method for improving the freezing resistance and cold resistance of the citrus system in the fruiting period in comparative example 3 are the same as those in example 3, and only (5) is the root fertilizer applied separately; specifically, root fertilizer was applied separately in comparative example 3: weeding the citrus unshiu orchard every year in the 4 months, xia Shao extraction period, rotary tillage soil, rotary tillage depth of 30-35 cm, rotary tillage area of 35-45% of total area of the citrus unshiu orchard, cutting off partial root system of citrus unshiu, and covering 2.2kg of root system restoration agent of root Shi Yuhua-layer root system bank with ground cloth; namely (5) the self-made resistance inducer is not applied in the root fertilizer applying operation.
The cold resistance and fruit condition of the citrus reticulata were observed, and the statistical results are shown in table 7 below.
TABLE 7
Comparative example 4
The methods of (1) - (4) and (6) for improving the freezing resistance and cold resistance of the citrus system in fruiting period are the same as those of example 3, and only (5) is the root fertilizer applied separately; specifically, root fertilizer was applied separately in comparative example 4: weeding the citrus unshiu orchard every year in the 4 months, xia Shao extraction period, rotary tillage soil, rotary tillage depth of 30-35 cm, rotary tillage area of 35-45% of total area of the citrus unshiu orchard, cutting off root systems of partial citrus unshiu, applying 0.4kg of self-control resistance inducer to the root systems, and covering with ground cloth;
the self-made resistance inducer is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has resistance of inducing plants to produce induction, and is prepared by crushing 40 parts of shell powder, 30 parts of shrimp and crab shell powder and 10 parts of yellow meal worm shell powder, and adding 0.1% potassium hydroxide solution according to volume multiple of 1:3, stirring and fermenting for 12 hours, regulating the pH value to 4.5, adding 0.1 part of pectase, 0.5 part of xylanase, 1.0 part of bacillus megatherium with amino oligosaccharide preference and 1.0 part of bacillus mucilaginosus into the mixture, mixing and fermenting for 24 hours, and then spray drying the mixture to obtain the microbial inoculum; namely (5) the root system restoration agent of the Yuhualing root system bank is not applied in the root fertilizer separate application operation.
The cold resistance and fruit condition of the citrus reticulata were observed, and the statistical results are shown in table 8 below.
TABLE 8
The measurement of the data such as the branch tip proline content, the leaf conductivity, the leaf chlorophyll content, the leaf total sugar content, the leaf sucrose content, the leaf starch content, the leaf reducing sugar content and the like is carried out in the first 1 month-1 month ten days, at this time, the air temperature is the lowest, and the leaf condition can most reflect the cold resistance of the citrus; as can be seen from the cold resistance and the fruit condition of the Wo-citrus trees in examples 1-4 and comparative examples 1-4, the method for improving the frost resistance and the cold resistance of the Wo-citrus tree system in the fruiting period carries out flower thinning and fruit thinning and flower and fruit preservation, ensures the yield of Wo-citrus plants to be 45-55 kg, ensures the yield of Wo-citrus, simultaneously furthest reduces the occurrence of cold injury and has high economic benefit; the four fertilizers are applied to the roots, so that the requirements of the citrus reticulata on fertility can be met, rooting and leaf expanding of the citrus reticulata are promoted, chlorophyll content of leaves is improved, photosynthesis is promoted, more glucose is synthesized, nutrients are reserved for the tree body, and cold resistance and disease resistance of the tree body are improved; through a series of foliar fertilizer application management, the rooting and leaf spreading of the citrus reticulata can be promoted to the greatest extent, the chlorophyll content of leaves is improved, photosynthesis is promoted, more glucose is synthesized, the nutrient is reserved for the tree body, and the cold damage resistance and disease resistance of the tree body are improved; the soil is rotary tilled, root systems of the citrus unshiu part are cut off, then a root system repairing agent and a self-made inducing agent are applied, the old roots of the cut part are healed, the old roots are helped to heal, the effect of enhancing the nutrition storage of the root systems for cold-resistant storage is promoted, the water absorption function is exerted on the one hand, the leaf surfaces are quickly transpirated and dehydrated to cause leaf surface curling and dryness on the other hand, and therefore attack of low-temperature meteorological disasters to citrus unshiu trees in fruiting period is prevented; spraying lime water in the coloring period of the citrus reticulata can play a role in preventing insect damage, preventing sunburn, reducing the using amount of pesticides and the like, but also has the problem that lime water residues are difficult to clean, the lime water residues are unfavorable for many consumers, the yield and income of fruit farmers are not favorable, a layer of non-toxic and harmless film can be formed on the surface of citrus reticulata fruits by spraying protective liquid which is used for preventing the lime water residues from being difficult to clean before the coloring period of the citrus reticulata, then lime water is sprayed, and the lime water residues can be removed by slightly cleaning with water, so that the operation is simple and easy, and the quality of the citrus reticulata can be further improved; the tree crown is covered with white non-woven fabrics before frost, so that the occurrence of cold injury is further reduced; the alliin is added into the protective liquid, so that pockmark on the surface of the citrus reticulata fruit can be reduced, meanwhile, the skin of the citrus reticulata fruit is brighter, and the quality of the citrus reticulata is further improved.
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (8)
1. A method for enhancing the freezing resistance and cold resistance of a citrus system in fruiting period comprising:
(1) And (3) shaping and pruning:
1.1 When spring tips grow to 5cm, keeping 2-3 strong buds in different directions on each tip, and keeping 6-7 leaves on excessive branches for picking the heart; cutting off all summer tips; uniformly putting autumn tips in the middle ten days of the first 9 months of 8 months, and plastering off sporadic buds; erasing all winter tips;
1.2 A, routinely pruning diseased shoots; pruning the branch tips in winter to ensure that the branch tips are reasonably distributed and keep the ventilation and light transmission of the tree body;
(2) Flower and fruit management: flower and fruit thinning is carried out, and flower and fruit preservation is carried out at the same time, so that the yield of the Vortica tangutica plant is ensured to be 45-55 kg;
(3) Root Shi Yuhua lingdi microbial agent: 1-2 jin of microbial agent for the field of the second physiological fruit-bearing stage strain, promoting the growth of lateral roots to produce cytokinin, relieving the top advantages of overgrowth branches, promoting nutrition diversion and pressing tips with fruits; 2-3 jin of a soil-borne microbial agent is applied to the strain in the autumn tip germination period, and an aqueous fertilizer containing amino acid is sprayed to improve the freezing resistance of the citrus plants;
(4) Applying leaf fertilizer: in spring tip stage Shi Yuhua, the leaf fertilizer No. 1 is used for enhancing cell activity, improving photosynthesis and promoting root growth; in the flowering period Shi Yuhua, the leaf fertilizer No. 2 is used for promoting the differentiation of flower buds; in the young fruit stage Shi Yuhua, the leaf fertilizer No. 2 turns the nutrition growth into reproductive growth, promotes the growth and development of young fruits and improves the fruit yield; fruit enlargement period: spraying an aqueous fertilizer containing amino acid to raise the carbon-nitrogen ratio and the concentration of cell sap and increase the nutrient accumulation of reproductive growth; in the coloring period Shi Yuhua of the Vortica, the leaf fertilizer No. 2 is used for enhancing the cell activity, improving the photosynthesis, promoting the fruit coloring and improving the sugar content of the fruit;
(5) Root fertilizer is applied separately: 4 months per year, xia Shao, carrying out soil rotary tillage, cutting off partial root systems of citrus, 2.0-2.5 kg of Shi Yuhua-element root system bank root system repairing agent, 0.3-0.5 kg of self-made resistance inducing agent, and covering with ground cloth;
the self-made resistance inducer is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has resistance of inducing plants to produce induction, 40-60 parts of shell powder, 30-45 parts of shrimp and crab shell powder and 10-25 parts of yellow meal worm shell powder are adopted, and 0.1-5% potassium hydroxide solution is added according to volume multiple 1 after crushing: 3-1: 8, stirring and fermenting for 12-48 h, regulating the pH value to 4.5-5.5, adding 0.1-1.5 parts of pectase, 0.5-1.5 parts of xylanase, 1.0-2.0 parts of bacillus megaterium with amino oligosaccharide preference and 1.0-2.0 parts of bacillus mucilaginosus, mixing and fermenting for 24h, and then spray drying to obtain the microbial inoculum;
(6) Lime water is applied:
6.1 A protective liquid sprayed before the coloring period of the citrus reticulata to prevent lime water residue and difficult cleaning; the protective solution consists of the following components in parts by weight: 100 parts of water, 1.6 to 1.8 parts of calcium chloride, 4 to 6 parts of sodium alginate, 6 to 8 parts of sodium humate, 3 to 5 parts of chitosan and 0.12 to 0.15 part of alliin;
6.2 Lime water is sprayed in the coloring period of the citrus reticulata.
2. The method for improving the freezing resistance and cold resistance of a citrus fruit bearing system according to claim 1, wherein the flower and fruit management: flower and fruit thinning and flower and fruit thinning are carried out by adopting a foliar fertilizer Yuhualiing No. 2, and an amino acid water-soluble fertilizer containing moisture is used for flower and fruit preserving, so that the yield of the Vortichwan orange plant is ensured to be 50-55 kg.
3. The method of claim 1, wherein the root Shi Yuhua lingdi microbial agent: 1.5-2 jin of microbial agent for the field of the second physiological fruit drop stage strain, promoting the growth of lateral roots to produce cytokinin, relieving the top advantages of overgrown branches, promoting nutrition diversion and fruit thinning; 2.5-3 jin of the soil-borne microbial agent is applied to the strain in the autumn tip germination period, and the water-soluble fertilizer containing amino acid is sprayed to improve the frost resistance of the citrus plants.
4. The method for improving the freezing resistance and cold resistance of a citrus system in fruiting period according to claim 1, wherein the foliar fertilizer is applied: 150-180 jin of Yuhualiing No. 1 foliar fertilizer with the concentration of 200-300 ppm is applied to acre in spring tip period so as to enhance the cell activity, improve the photosynthesis and promote the root growth; applying 150-180 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 300-500 ppm in the acre of the flowering period so as to promote the differentiation of flower buds; 150-180 jin of Yuhualiing No. 2 foliar fertilizer with the concentration of 250-350 ppm is applied to mu in the young fruit period, so that the nutrition growth is changed to reproductive growth, the growth and development of young fruits are promoted, and the fruit yield is improved; fruit enlargement period: applying 120-150 jin of aqueous fertilizer 300 times containing amino acid per mu to increase the carbon-nitrogen ratio and the concentration of cell fluid and increase the nutrient accumulation of reproductive growth; 150-180 jin of Yuhualing No. 2 foliar fertilizer with the concentration of 150-200 ppm is applied to the acre in the coloring period of the citrus reticulata so as to enhance the cell activity, improve the photosynthesis, promote the fruit coloring and improve the sugar content of the fruit.
5. The method for improving the freezing resistance and cold resistance of a bearing-period citrus unshiu system according to claim 1, wherein said separate root fertilizer application: weeding the citrus unshiu garden every year in the 4 months, xia Shao extraction period, rotary tillage soil, rotary tillage depth of 30-35 cm, rotary tillage area of 35-45% of total area of the citrus unshiu garden, cutting off partial root system of citrus unshiu, 2.2-2.5 kg of root system repairing agent for root Shi Yuhua, 0.4-0.5 kg of self-made inducer, and covering with ground cloth.
6. The method for improving the freezing resistance and cold resistance of a citrus unshiu tree system in a fruiting period according to claim 1, wherein the self-made resistance inducer is a micromolecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has induction acquired resistance of induced plants, 45-60 parts of shell powder, 35-45 parts of shrimp and crab shell powder and 15-25 parts of yellow meal worm shell powder are adopted, and 0.5% -5% potassium hydroxide solution is added according to volume multiple 1 after crushing: 4-1: 8, stirring and fermenting for 18-48 h, regulating the pH value to 4.8-5.5, adding 0.3-1.5 parts of pectase, 0.7-1.5 parts of xylanase, 1.4-2.0 parts of bacillus megaterium with amino oligosaccharide preference and 1.5-2.0 parts of bacillus mucilaginosus, mixing and fermenting for 24h, and then spray drying.
7. The method for improving the freezing resistance and cold resistance of a citrus unshiu tree system in a fruiting period according to claim 1, wherein the self-made resistance inducer is a small molecular polysaccharide and active amino acid compound which is prepared by compounding microorganisms and enzyme systems and has induction acquired resistance of induced plants, 50 parts of shell powder, 38 parts of shrimp and crab shell powder and 20 parts of yellow mealworm shell powder are adopted, and after crushing, 2.5% potassium hydroxide solution is added according to volume multiple 1:5, stirring and fermenting for 28h, regulating the pH value to 5.0, adding 0.8 part of pectase, 0.9 part of xylanase, 1.7 parts of bacillus megaterium with amino oligosaccharide preference and 1.8 parts of bacillus mucilaginosus into the mixture, mixing and fermenting for 24h, and then spray drying the mixture to obtain the microbial inoculum.
8. The method for improving the freezing resistance and cold resistance of a citrus system in fruiting period according to claim 1, wherein the protective liquid consists of the following components in parts by weight: 100 parts of water, 1.7-1.8 parts of calcium chloride, 5-6 parts of sodium alginate, 7-8 parts of sodium humate and 4-5 parts of chitosan; the protective liquid which is used for preventing lime water residue and is difficult to clean is sprayed for 1 to 3 times before the coloring period of the Vortica oranges, and each time is separated by 6 hours.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112205230A (en) * | 2020-09-18 | 2021-01-12 | 广西壮族自治区农业科学院 | Support-free and sun burn-resistant cultivation method for citrus spring shoot fruiting |
| CN112205229A (en) * | 2020-09-17 | 2021-01-12 | 广西壮族自治区农业科学院 | Efficient cost-saving citrus cultivation method |
| CN114667884A (en) * | 2022-05-13 | 2022-06-28 | 广西南宁宇花灵科技发展有限公司 | Cultivation method for reducing generation of dead fruits and large and small fruits in fertile fruit period of mandarin orange |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112205229A (en) * | 2020-09-17 | 2021-01-12 | 广西壮族自治区农业科学院 | Efficient cost-saving citrus cultivation method |
| CN112205230A (en) * | 2020-09-18 | 2021-01-12 | 广西壮族自治区农业科学院 | Support-free and sun burn-resistant cultivation method for citrus spring shoot fruiting |
| CN114667884A (en) * | 2022-05-13 | 2022-06-28 | 广西南宁宇花灵科技发展有限公司 | Cultivation method for reducing generation of dead fruits and large and small fruits in fertile fruit period of mandarin orange |
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