A double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees and its preparation method

Abstract

The invention discloses a double-effect chelated iron-boron foliar fertilizer for preventing and treating yellow leaf disease of fruit trees and a preparation method thereof. The foliage fertilizer comprises the following components in parts by weight: ferrous sulfate heptahydrate 50-100, citric acid 50-100, fulvic acid 200-400, urea 100-300, borax 20-55, boric acid 10-30, Water 200‑400. The preparation process involves three steps: preparation of double-effect chelated iron, preparation of high-content boron stock solution, and compounding of double-effect chelated iron and boron stock solution. This kind of foliar fertilizer can effectively control the yellow leaf disease of fruit trees caused by iron deficiency. Compared with traditional iron-containing foliar fertilizers, it has a longer iron supply time and a higher absorption conversion rate. It also has drought and cold resistance, promotes early maturity and improves The effect of quality; the preparation of the foliar fertilizer uses a double-effect chelating agent, which has stable performance, high chelating coefficient, and lower price than EDTA and DTPA chelating agents, and simultaneously supplements trace and macronutrient elements, which is suitable for promotion.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and in particular 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 technique [0002] Poor soil, salinization, improper fertilization management, etc. will cause iron deficiency yellow leaf disease of fruit trees (peach trees, pear trees, kiwi fruit, etc.), iron deficiency yellow leaf disease will directly lead to a decline in fruit tree production, and will also greatly affect the production of fruit trees. The sweetness and meat quality of the fruit will even lead to the overall death of the fruit tree in severe cases, which will cause great losses to the economic benefits of the fruit growers. To solve the yellow leaf disease caused by iron deficiency, there are generally methods such as improving the soil, adding organic fertilizers, and supplementing ex...

AI Technical Summary

Problems solved by technology

Ferrous sulfate is cheap, easy to oxidize, low absorption conversion rate, and poor control effect; EDTA, DTPA chelated iron has a better improvement effect, but the chelating agent is expensive, and most of the chelating agents are chemically synthesized substances, which are difficult to absorb and digest. It will affect the fruit quality; fulvic acid preparations have the advantages of promoting growth, easy absorption, and good control effect, but the anti-flocculation ability is poor, which is not conducive to popularization and use

[0003] For iron-deficiency yellow leaf disease, it is generally believed that iron supplementation can solve the problem, but three problems are often overlooked. One is the form of iron applied. Fe is involved in the synthesis of chlorophyll. 2+ , the oxidized Fe 3+ It is basically ineffective; the second is the problem of absorption and transformation, the transportation of iron in plants is difficult, and the chelated state is beneficial to the transportation of iron. The screening of chelating agents should be based on the perspective of greenness and high efficiency; the third is the problem of leaf bearing capacity, yellowing The absorption capacity of the leaves is poor. When adding iron, it is advisable to supplement other nutrients at the same time to realize the dual functions of leaf growth promotion and nutrition.

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