Double-effect chelated iron-boron foliar fertilizer for controlling chlorosis of fruit trees and preparation method of double-effect chelate iron-boron foliar fertilizer

Abstract

The invention discloses double-effect chelated iron-boron foliar fertilizer for controlling chlorosis of fruit trees and a preparation method of the double-effect chelated iron-boron foliar fertilizer. The foliar fertilizer is prepared from components in parts by weight as follows: 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 involves three steps including preparation of double-effect chelated iron, preparation ofa high-content boron stock solution and compounding of the double-effect chelated iron and the boron stock solution. The foliar fertilizer can effectively control the chlorosis of the fruit trees dueto iron deficiency, and compared with traditional iron-containing foliar fertilizer, the foliar fertilizer has long iron supply time, high absorption and conversion rate and functions of resisting drought and cold, promoting precocity and improving quality. The foliar fertilizer is prepared from a double-effect chelating agent, has stable performance and high chelating coefficient, is cheaper than EDTA and DTPA chelating agents, synchronously supplements trace and macro nutrient elements and 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, has low absorption conversion rate, and poor control effect; EDTA and DTPA chelated iron have good 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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