CN110078553B - Double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees and preparation method thereof - Google Patents
Double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees and preparation method thereof Download PDFInfo
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- CN110078553B CN110078553B CN201910288239.6A CN201910288239A CN110078553B CN 110078553 B CN110078553 B CN 110078553B CN 201910288239 A CN201910288239 A CN 201910288239A CN 110078553 B CN110078553 B CN 110078553B
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
Abstract
The invention discloses a double-effect chelated iron and boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees and a preparation method thereof. The foliar fertilizer comprises the following components in parts by weight: 50-100 parts of ferrous sulfate heptahydrate, 50-100 parts of citric acid, 200-400 parts of fulvic acid, 100-300 parts of urea, 20-55 parts of borax, 10-30 parts of boric acid and 200-400 parts of water. The preparation process relates to three steps of preparation of double-effect chelated iron, preparation of high-content boron stock solution and compounding of the double-effect chelated iron and the boron stock solution. The foliar fertilizer can effectively prevent and treat yellow leaf disease of fruit trees caused by iron deficiency, has long iron supply time and high absorption conversion rate compared with the traditional iron-containing foliar fertilizer, and has the functions of resisting drought and cold, promoting prematurity and improving quality; the foliar fertilizer adopts the double-effect chelating agent, has stable performance, high chelating coefficient and lower price than EDTA and DTPA chelating agents, synchronously supplements trace and large amount of nutrient elements, and is suitable for popularization.
Description
Technical Field
The invention belongs to the technical field of agricultural fertilizers, and particularly relates to a double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees and a preparation method thereof.
Background
The iron-deficiency yellow leaf disease of fruit trees (peach trees, pear trees, kiwi fruits and the like) can be caused by barren soil, salinization, improper fertilization management and the like, the iron-deficiency yellow leaf disease can directly cause the yield reduction of the fruit trees, the sweetness, the meat quality and the like of the fruits can be influenced to a great extent, the whole death of the fruit trees can be even caused in serious cases, and great loss is caused to the economic benefits of fruit growers. The method for solving the yellow leaf disease caused by iron deficiency generally comprises the steps of improving soil, applying organic fertilizer, supplementing exogenous iron elements to leaf surfaces and the like. The exogenous iron element supplemented to the leaf surface is mostly ferrous sulfate, EDTA-Fe and DTPA-Fe, and in recent years, fulvic acid preparations gradually become products with more use. The ferrous sulfate has low price, easy oxidation, low absorption conversion rate and poor prevention and treatment effect; EDTA and DTPA chelated iron have good improvement effect, but the chelating agent is expensive, and is mostly a chemical synthetic substance, so that the absorption and digestion are difficult, and the fruit quality is influenced; the fulvic acid preparation has the advantages of growth promotion, easy absorption and good prevention and treatment effect, but has poor flocculation resistance and is not beneficial to popularization and use.
Aiming at the iron deficiency yellow leaf disease, generally, the iron supplement can be solved, but three problems are usually ignored, namely the form problem of iron application, and Fe is used for synthesizing chlorophyll2+Oxidized Fe3+Is substantially invalid; secondly, the problem of absorption and transformation is that the migration of iron in the plant body is difficult, the chelated state is favorable for the migration of iron, and the screening of the chelating agent needs to be started from the perspective of green and high efficiency; thirdly, the bearing capacity of the leaves is poor, the absorbing capacity of the etiolated leaves is poor, and other nutrient elements are preferably supplemented when the iron element is supplemented, so that the dual functions of leaf growth promotion and nutrition are realized.
Disclosure of Invention
Aiming at the prior art, the invention aims to provide a double-effect chelated iron-boron leaf fertilizer, and the invention adopts natural double chelating agents, citric acid and fulvic acid, and combines molten urea to prepare the citric acid-fulvic acid amine double-effect chelated iron, thereby ensuring that all iron is Fe2+The form of the plant extract eliminates the complexation of the fulvic acid to the iron, fully exerts the growth promotion effect of the fulvic acid, obviously improves the migration and transformation of the iron in the plant body, andthe trace element B and a large amount of nutrient element N are synchronously supplemented, the synergy of growth promotion and nutrition supplement is realized, and the prevention and treatment effect of the yellow spot is greatly improved.
In order to achieve the purpose, the invention adopts the following technical scheme: the invention provides a double-effect chelated iron and boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees, which is prepared from the following raw materials: fulvic acid, citric acid, ferrous sulfate heptahydrate, urea, boric acid, borax, water and surfactant.
Preferably, the raw materials are prepared with the following weight fractions: 50-100 parts of ferrous sulfate heptahydrate, 50-100 parts of citric acid, 400 parts of fulvic acid 200-containing material, 250 parts of urea 100-containing material, 20-55 parts of borax, 10-30 parts of boric acid and 400 parts of water 200-containing material.
Preferably, the surfactant is one or more of sodium dodecyl sulfate, sodium lignin sulfonate and sodium lauryl sulfate.
The second aspect of the invention provides a preparation method of a double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees, which comprises the following steps:
preparing double-effect chelated iron: preparing ammonium citrate chelated iron stock solution by using urea, ferrous sulfate heptahydrate and citric acid; preparing a fulvic acid amine stock solution by using urea and fulvic acid; preparing citric acid-fulvic acid amine double-effect chelated iron by using the prepared ferric citrate amine chelated stock solution and the fulvic acid amine stock solution;
preparing a boron stock solution: preparing boron stock solution by using borax and boric acid;
compounding double-effect chelated iron and boron stock solution.
Preferably, step (i), preparation of ammonium citrate chelated iron stock solution: mixing urea, ferrous sulfate heptahydrate and citric acid in a hot water condition of 90 ℃ according to the proportion of 1: 0.6-1: 0.6-1, heating for 10-15 minutes, continuously stirring during the reaction, and rotating at the speed of 30r/min to obtain the product.
Preferably, the preparation of the fulvic acid amine stock solution comprises the following steps: mixing urea according to the proportion of 1: 2-3, dissolving in fulvic acid at normal temperature, continuously stirring at the rotating speed of 30r/min for 5-10 minutes, and thus obtaining the fulvic acid.
Preferably, the preparation of the citric acid-fulvic acid amine double-effect chelated iron comprises the following steps: mixing the prepared ferric citrate chelate stock solution and the fulvic acid amine stock solution at 100 ℃ and heating for reaction for 10-15 minutes, continuously stirring during the reaction, and rotating at the speed of 40r/min to obtain the product.
Preferably, the preparation of the boron stock solution comprises the following steps: mixing borax and boric acid at a temperature of 90 ℃ in hot water according to a proportion of 1.2-1.6: 1 heating for 5-10 minutes, continuously stirring during the heating, and rotating at the speed of 10-20r/min to obtain the product.
Preferably, the step three is to mix the obtained citric acid-fulvic acid amine double-effect chelated iron with the boron stock solution, add 2-5 per mill of surfactant based on the weight of the mixed solution, fully mix, cool to room temperature, and bottle.
The third aspect of the invention provides application of a double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees in the aspect of preventing and treating the yellow leaf disease of the fruit trees.
The invention has the beneficial effects that:
(1) the double-effect chelated iron-boron leaf fertilizer disclosed by the invention uses the double-effect chelating agent, has high chelation coefficient, removes the complexation and flocculation of fulvic acid on iron, and avoids Fe2+The oxidation of (2) prolongs the iron supply time.
(2) Fulvic acid is used as Fe in the invention2+The carrier has the effects of promoting the growth of the leaves and regulating the transpiration of the leaves, and can promote Fe2+The iron is transferred and transformed in the plant body, and the utilization rate of the iron is improved.
(3) The invention synchronously supplements trace element B and a large amount of nutrient element N while supplementing trace element iron, realizes the synergistic effect of growth promotion and nutrition supplementation, and can obviously improve the yield and quality of fruits while preventing and treating yellows.
(4) The invention adds special surfactant, which has strong adhesive force, good penetrability and greatly improved nutrient leaf surface absorption rate.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
As introduced in the background art, iron supplementation can be solved for iron-deficiency yellow leaf disease generally, but three problems are usually ignored, namely the morphological problem of iron application, and Fe is involved in chlorophyll synthesis2+Oxidized Fe3+Is substantially invalid; secondly, the problem of absorption and transformation is that the migration of iron in the plant body is difficult, the chelated state is favorable for the migration of iron, and the screening of the chelating agent needs to be started from the perspective of green and high efficiency; thirdly, the bearing capacity of the leaves is poor, the absorbing capacity of the etiolated leaves is poor, and other nutrient elements are preferably supplemented when the iron element is supplemented, so that the dual functions of leaf growth promotion and nutrition are realized.
Based on the above, the invention creatively provides a double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees, which comprises the following raw materials: fulvic acid, citric acid, ferrous sulfate heptahydrate, urea, boric acid, borax, water and surfactant; the surfactant is one or more of sodium dodecyl sulfate, sodium lignin sulfonate and sodium lauryl sulfate.
Preparing ammonium citrate chelated iron stock solution by using urea, ferrous sulfate heptahydrate and citric acid; preparing a fulvic acid amine stock solution from urea and fulvic acid; the citric acid-fulvic acid double-effect chelated iron is prepared from the ammonium citrate chelated iron stock solution and the fulvic acid stock solution, the double-effect chelated iron has high chelation coefficient, the complexation and flocculation of fulvic acid on iron are eliminated, and Fe is avoided2+The iron supply time is prolonged; fulvic acid as Fe2+The carrier has the effects of promoting the growth of the leaves and regulating the transpiration of the leaves, and can promote Fe2+The iron is transferred and transformed in the plant body, and the utilization rate of the iron is improved.
The stock solution with high boron content is prepared from boric acid and borax, trace element B and a large amount of nutrient element N are synchronously supplemented while trace element iron is supplemented, the synergistic effect of growth promotion and nutrition supplement is realized, and the yield and the quality of fruits can be remarkably improved while the yellow spot is prevented and treated.
When the high boron content stock solution and the double-effect chelated iron are compounded, a special surfactant is added, so that the fertilizer solution has strong adhesive force, good permeability and greatly improved nutrient foliage absorption rate.
Wherein 50-100 parts of ferrous sulfate heptahydrate, 50-100 parts of citric acid, 400 parts of fulvic acid 200-containing material, 250 parts of urea 100-containing material, 20-55 parts of borax, 10-30 parts of boric acid and 400 parts of water 200-containing material.
The preparation method of the double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees comprises the following steps:
preparing double-effect chelated iron: preparing ammonium citrate chelated iron stock solution by using urea, ferrous sulfate heptahydrate and citric acid; preparing a fulvic acid amine stock solution by using urea and fulvic acid; preparing citric acid-fulvic acid amine double-effect chelated iron by using the prepared ferric citrate amine chelated stock solution and the fulvic acid amine stock solution;
preparing a boron stock solution: preparing boron stock solution by using borax and boric acid;
compounding double-effect chelated iron and boron stock solution.
Step I, preparing ammonium citrate chelated iron stock solution: mixing urea, ferrous sulfate heptahydrate and citric acid in a hot water condition of 90 ℃ according to the proportion of 1: 0.6-1: 0.6-1, heating for 10-15 minutes, continuously stirring during the reaction, and rotating at the speed of 30r/min to obtain the product.
At this ratio Fe2+In combination with citric acid, the proportion of ferrous sulfate heptahydrate is too high, resulting in Fe2+Incomplete chelation, residual Fe2+Is oxidized into Fe3+Resulting in inefficiency. If the proportion of the citric acid is too large, the waste of the citric acid is caused.
Step I, preparation of a fulvic acid amine stock solution: mixing urea according to the proportion of 1: 2-3, dissolving in fulvic acid at normal temperature, continuously stirring at the rotating speed of 30r/min for 5-10 minutes, and thus obtaining the fulvic acid.
According to the mass ratio of the reaction substances, which is obtained through a plurality of experiments, 15mg of fulvic acid (pure substance amount converted from the content measured by the fulvic acid solution) absorbs 10mg of amide nitrogen in urea, the converted urea addition amount is 21.7mg, the preparation concentration of the fulvic acid solution is about 25-35%, and the mass of the fulvic acid preparation solution is 42-60 mg. Therefore, the mass ratio of urea to fulvic acid is 1: 2 to 3.
The preparation method comprises the following steps of: mixing the prepared ferric citrate chelate stock solution and the fulvic acid amine stock solution at 100 ℃ and heating for reaction for 10-15 minutes, continuously stirring during the reaction, and rotating at the speed of 40r/min to obtain the product.
Step two, preparing boron stock solution: mixing borax and boric acid at a temperature of 90 ℃ in hot water according to a proportion of 1.2-1.6: 1 heating for 5-10 minutes, continuously stirring during the heating, and rotating at the speed of 10-20r/min to obtain the product.
Generally, the ratio of the amount of borax to boric acid reacted at high temperature is 2: 4-6, borax generally contains 4-10 crystal water, the relative molecular mass is 201-381, the mass of the reactant divided by the relative molecular mass is the amount of the substance, mBorax /201～381:mBoric acidThe mass fraction of reactants is preferably 1.2-1.6: 1.
Mixing the obtained citric acid-fulvic acid amine double-effect chelated iron with the boron stock solution, adding 2-5 per mill of surfactant based on the weight of the mixed solution, fully mixing, cooling to room temperature, and bottling. The addition of special surfactant can make the fertilizer liquid have strong adhesive force, good permeability and greatly raised nutrient foliage absorption rate.
The surfactant belongs to trace high-efficiency substances, the acting range of the surfactant is concentrated in 2-5 thousandths, the too small effect is not obvious, and the too large cost performance is low.
An application of a double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees in the aspect of preventing and treating the yellow leaf disease of the fruit trees.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments.
The test materials used in the examples of the present invention are all conventional in the art and commercially available.
Example 1 double-effect chelated iron and boron foliar fertilizer for preventing and treating yellow leaf disease of peach trees
Heating 110 parts (by weight, the same below) of urea, 70 parts of ferrous sulfate heptahydrate and 90 parts of citric acid in 300 parts of water for reaction, keeping the water temperature at 90 ℃ for 10-15 minutes, continuously stirring the mixture during the reaction, and rotating at the speed of 30r/min to obtain solution A.
Dissolving 110 parts of urea in 250 parts of fulvic acid at normal temperature, continuously stirring for 5-10 minutes at the rotating speed of 30r/min to prepare a fulvic acid amine stock solution B.
And mixing the solution A and the solution B under the heating condition of 100 ℃ for reaction for 10-15 minutes, continuously stirring the mixture at the rotating speed of 40r/min to prepare the citric acid-fulvic acid amine double-effect chelated iron as solution C.
Heating 30 parts of borax and 20 parts of boric acid for reaction for 5-10 minutes under the condition of hot water at 90 ℃, continuously stirring during the reaction, and reacting at the rotating speed of 10-20r/min to prepare a boron stock solution, namely solution D.
And uniformly mixing the solution C and the solution D, and adding sodium dodecyl sulfate according to the weight part of 3.5% of the mixed solution to obtain the double-effect chelated iron-boron leaf fertilizer for preventing and treating peach yellow leaf disease.
In order to better verify the effect of the double-effect chelated iron-boron foliar fertilizer for preventing and treating peach yellow leaf disease, a test is carried out on peach trees with serious peach yellow leaf disease.
Test materials and methods
(1) Time and place of experiment
Test site: the Gaozhuangcun is paved in eighteen Shen provinces, the soil is moderate salinized moist soil, basic geopotential nutrients, the total nitrogen of the soil is 0.73g/kg, available phosphorus is 15.3mg/kg, quick-acting potassium is 210.5mg/kg, organic matters are 16g/kg, and the pH value is 8.3.
The saline-alkali soil has high pH value, low iron effectiveness, serious yellow leaf disease and more than 85 percent of morbidity.
Test time: 5-8 months in 2018.
(2) Design of experiments
The experiment is designed with 4 treatments, wherein the treatment 1 is the foliar fertilizer prepared in the embodiment 1, the treatment 2 adopts EDTA-Fe, the treatment 3 adopts ferrous sulfate, the treatment 4 is a control group, and the same amount of clear water is sprayed
(3) Analysis of results
The chlorophyll content and the total iron content of the peach leaves are detected, the fruit yield and the fruit quality are counted, and the results are shown in table 1.
TABLE 1 comparison of test indices
The results in table 1 show that: compared with the leaves without the foliar fertilizer, the chlorophyll content of the leaves is improved by 45.7%, the total iron content of the leaves is improved by 41.2%, the yield is improved by 19.3%, the yield increasing effect is remarkable, the sugar content is improved by 15.7%, and the quality is remarkably improved. Compared with the chlorophyll content and the iron content of the leaves treated by ferrous sulfate, the yield and the quality are also greatly improved, and the effect of the double-effect chelated iron-boron leaf fertilizer is obviously better than that of the ferrous sulfate. Compared with EDTA-Fe, each index is also slightly improved, but the cost is obviously reduced.
Example 2 double-effect chelated iron and boron foliar fertilizer for preventing and treating yellow leaf disease of pear trees
Heating 100 parts (by weight, the same below) of urea, 60 parts of ferrous sulfate heptahydrate and 80 parts of citric acid in 240 parts of water for reaction, keeping the water temperature at 90 ℃ for 10-15 minutes, continuously stirring the mixture during the reaction, and rotating at the speed of 30r/min to obtain solution A.
Dissolving 80 parts of urea in 220 parts of fulvic acid at normal temperature, continuously stirring for 5-10 minutes at the rotating speed of 30r/min to prepare a fulvic acid amine stock solution B.
And mixing the solution A and the solution B under the heating condition of 100 ℃ for reaction for 10-15 minutes, continuously stirring the mixture at the rotating speed of 40r/min to prepare the citric acid-fulvic acid amine double-effect chelated iron as solution C.
Heating 46 parts of borax and 30 parts of boric acid for reaction for 5-10 minutes under the condition of hot water at 90 ℃, continuously stirring during the reaction, and reacting at the rotating speed of 10-20r/min to prepare a boron stock solution, namely solution D.
Uniformly mixing the solution C and the solution D, and adding sodium lauryl sulfate according to the weight part of 2.5% of the mixed solution to obtain the double-effect chelated iron-boron foliar fertilizer for preventing and treating the yellow leaf disease of the pear trees
In order to better verify the effect of the double-effect chelated iron-boron foliar fertilizer for preventing and treating the yellow leaf disease of the pear tree, a test is carried out on the condition that the yellow leaf disease of the pear tree is serious.
Test materials and methods
(1) Time and place of experiment
Test site: the soil is mild to moderate salinized soil of yellow river old sidewalks, basic soil nutrients, 0.85g/kg of total nitrogen of the soil, 19.0mg/kg of available phosphorus, 305.0mg/kg of quick-acting potassium, 18g/kg of organic matter and pH 8.5.
The saline-alkali soil has high pH value, low iron effectiveness, serious yellow leaf disease and over 70 percent of morbidity
Test time: 3-7 months in 2018.
(2) Design of experiments
The experiment is designed with 4 treatments, wherein the treatment 1 is the foliar fertilizer prepared in the embodiment 2, the treatment 2 adopts EDTA-Fe, the treatment 3 adopts ferrous sulfate, the treatment 4 is a control group, and the same amount of clear water is sprayed
(3) Analysis of results
The chlorophyll content and the total iron content of the leaves of the pear tree are detected, the yield and the quality of the fruits are counted, and the results are shown in table 2.
TABLE 2 comparison of test indices
The results in table 2 show that: compared with the leaves without the foliar fertilizer, the chlorophyll content of the leaves is improved by 24.0 percent, the total iron content of the leaves is improved by 31.2 percent, the yield is improved by 48.8 percent, the yield increasing effect is obvious, the sugar content is improved by 16.3 percent, and the quality is obviously improved. Compared with the chlorophyll content and the iron content of the leaves treated by ferrous sulfate, the chlorophyll content and the iron content of the leaves are respectively improved by 10.9 percent and 12.2 percent, which shows that the effect of the double-effect chelated iron-boron foliar fertilizer is obviously better than that of the ferrous sulfate. Compared with EDTA-Fe, the chlorophyll content and the leaf iron content are respectively improved by 3.9 percent and 1.3 percent, and the effect of the double-effect chelated iron-boron leaf fertilizer is better than that of the EDTA-Fe to a certain extent, but the investment cost is obviously reduced.
Example 3 double-effect chelated iron and boron foliar fertilizer for preventing and treating yellow leaf disease of kiwi fruit
Heating 130 parts (by weight, the same below) of urea, 80 parts of ferrous sulfate heptahydrate and 100 parts of citric acid in 320 parts of water for reaction, keeping the water temperature at 90 ℃ for 10-15 minutes, continuously stirring the mixture during the reaction, and rotating the mixture at the speed of 30r/min to obtain solution A.
Dissolving 100 parts of urea in 240 parts of fulvic acid at normal temperature, continuously stirring for 5-10 minutes at the rotating speed of 30r/min to prepare a fulvic acid amine stock solution B.
And mixing the solution A and the solution B under the heating condition of 100 ℃ for reaction for 10-15 minutes, continuously stirring the mixture at the rotating speed of 40r/min to prepare the citric acid-fulvic acid amine double-effect chelated iron as solution C.
Heating 24 parts of borax and 15 parts of boric acid to react for 5-10 minutes under the condition of 90 ℃ hot water, continuously stirring the mixture during the reaction, and reacting at the rotating speed of 10-20r/min to prepare a boron stock solution, namely a solution D.
Uniformly mixing the solution C and the solution D, and adding sodium lignosulfonate according to the weight part of 3% of the mixed solution to obtain the double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of kiwi fruits
In order to better verify the effect of the double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of kiwi fruits, a test is carried out on the condition that the yellow leaf disease of pear trees is serious.
Test materials and methods
(1) Time and place of experiment
Test site: in the Laiwu Tokyo Yanwangtze town Majuzhuang village, the soil is common simple-cultivation dry leaching soil (brown soil), basic soil nutrients, 1.01g/kg of soil total nitrogen, 20.3mg/kg of available phosphorus, 108.5mg/kg of quick-acting potassium, 14g/kg of organic matters and the pH value is 7.9.
The brown soil developed by the limestone matrix is basically alkaline, the effectiveness of trace element iron is low, and the iron-deficiency yellow leaf disease is easy to cause.
Test time: 4-8 months in 2018.
(2) Design of experiments
The experiment is designed with 4 treatments, wherein the treatment 1 is the foliar fertilizer prepared in the embodiment 3, the treatment 2 adopts EDTA-Fe, the treatment 3 adopts ferrous sulfate, the treatment 4 is a control group, and the same amount of clear water is sprayed
(3) Analysis of results
The chlorophyll content and the total iron content of the leaves of the kiwi fruit tree are detected, the fruit yield and the fruit quality are counted, and the results are shown in table 2.
TABLE 3 comparison of test indicators
The results in table 3 show that: compared with the leaves without the foliar fertilizer, the chlorophyll content of the leaves is improved by 29.0%, the total iron content of the leaves is improved by 27.3%, the yield is improved by 55.2, the yield increasing effect is remarkable, the sugar content is improved by 12.4%, and the quality is remarkably improved. Compared with the chlorophyll content and the iron content of the leaves treated by ferrous sulfate, the chlorophyll content and the iron content of the leaves are respectively improved by 12.9 percent and 13.4 percent, which shows that the effect of the double-effect chelated iron-boron foliar fertilizer is obviously better than that of the ferrous sulfate. Compared with EDTA-Fe, the chlorophyll content and the leaf iron content are respectively improved by 6.8 percent and 5.5 percent, and the effect of the double-effect chelated iron-boron leaf fertilizer is better than that of the EDTA-Fe to a certain extent, but the investment cost is obviously reduced.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (2)
1. The double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees is characterized by comprising the following raw materials in parts by weight: 50-100 parts of ferrous sulfate heptahydrate, 50-100 parts of citric acid, 400 parts of fulvic acid 200-containing material, 250 parts of urea 100-containing material, 20-55 parts of borax, 10-30 parts of boric acid and 400 parts of water 200-containing material; the surfactant is one or more of sodium dodecyl sulfate, sodium lignosulfonate and sodium lauryl sulfate;
the double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees is prepared by the following method:
preparing double-effect chelated iron: preparing ammonium citrate chelated iron stock solution by using urea, ferrous sulfate heptahydrate and citric acid; preparing a fulvic acid amine stock solution by using urea and fulvic acid; preparing citric acid-fulvic acid amine double-effect chelated iron by using the prepared ferric citrate amine chelated stock solution and the fulvic acid amine stock solution; preparation of ammonium citrate chelated iron stock solution: mixing urea, ferrous sulfate heptahydrate and citric acid in a hot water condition of 90 ℃ according to the proportion of 1: 0.6-1: 0.6-1, heating for 10-15 minutes, continuously stirring during the heating, and rotating at the speed of 30r/min to obtain the product; preparation of fulvic acid amine stock solution: mixing urea according to the proportion of 1: 2-3, dissolving in fulvic acid at normal temperature, continuously stirring at the rotating speed of 30r/min for 5-10 minutes to obtain the fulvic acid; preparing the citric acid-fulvic acid amine double-effect chelated iron: mixing the prepared ferric citrate chelate stock solution and the fulvic acid amine stock solution at the external heating condition of 100 ℃ for 10-15 minutes, continuously stirring during the mixing reaction, and rotating at the speed of 40r/min to prepare the ferric citrate chelate stock solution;
preparing a boron stock solution: preparing boron stock solution by using borax and boric acid; mixing borax and boric acid at a temperature of 90 ℃ in hot water according to a proportion of 1.2-1.6: 1 heating for 5-10 minutes, continuously stirring during the heating, and rotating at the speed of 10-20r/min to obtain the product;
compounding double-effect chelated iron and boron stock solution; mixing the obtained citric acid-fulvic acid amine double-effect chelated iron with the boron stock solution, adding a surfactant which accounts for 2-5 per mill of the weight of the mixed solution, fully and uniformly mixing, cooling to room temperature, and bottling.
2. The application of the double-effect chelated iron-boron foliar fertilizer for preventing and treating the yellow leaf disease of the fruit trees, which is disclosed by claim 1, in the aspect of preventing and treating the yellow leaf disease of the fruit trees.
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| CN113277904A (en) * | 2021-03-18 | 2021-08-20 | 上海应用技术大学 | Pricklyash peel leaf fertilizer and preparation method and use method thereof |
| CN113481016A (en) * | 2021-07-29 | 2021-10-08 | 海南金象云农业科技有限公司 | Soil conditioner and preparation method and application thereof |
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| CN1025957C (en) * | 1990-08-30 | 1994-09-21 | 王贞良 | Nutritious type leaf fertilizer |
| CN1031875C (en) * | 1991-10-24 | 1996-05-29 | 彭毓华 | Process for preparation of liquid trace fertilizer |
| CN100347136C (en) * | 2006-08-07 | 2007-11-07 | 爱沃(北京)农业技术有限公司 | Microelement type composite foliage fertilizer and its preparation method |
| CN103524197B (en) * | 2012-07-05 | 2015-01-07 | 北京巨泰科技有限公司 | Boron-containing synergistic urea, and preparation method and application thereof |
| CN102795906A (en) * | 2012-07-27 | 2012-11-28 | 山东农大肥业科技有限公司 | Preparation method of full-effect liquid microelement water-soluble fertilizer |
| CN104945027B (en) * | 2015-06-08 | 2018-11-20 | 京博农化科技股份有限公司 | A kind of chelated iron zinc boron fertilizer and preparation method thereof |
| CN105359693B (en) * | 2015-10-21 | 2017-12-19 | 山东省潍坊市农业科学院 | A kind of method of efficiently preventing and treating Chlorosis in Fruit trees yellowtop |
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| CN107814604A (en) * | 2017-12-13 | 2018-03-20 | 中国农业大学 | A kind of special anticracking foliar fertilizer of jujube tree and preparation method and application |
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