A kind of foliar fertilizer for preventing and treating iron-deficiency chlorosis of pear trees

Abstract

The invention discloses a foliar fertilizer for controlling iron-deficiency yellows of pear trees. The foliar fertilizer comprises the following components in percent by mass in a citric acid-disodium hydrogen phosphate buffer: 0.8-1% of ferrous sulphate, 0.2-0.3% of magnesium sulfate, 0.1-0.2% of white copperas zinc sulfate and 0.1-0.2% of manganese sulfate. The foliar fertilizer comprises the following advantages that: 1) the foliar fertilizer is convenient to apply, is directly sprayed on leaves, and is easy to operate and easy to popularize; 2) the foliar fertilizer helps to make the leaves green again, is fast in effectiveness and obvious in effect, helps to substantially alleviate the yellows symptom of the pear trees; and 3) the foliar fertilizer helps to improve the growth conditions, is easy to absorb by the pear tree body, and has the functions of promoting nutrition balance and enhancing tree vigour.

Description

technical field [0001] The invention belongs to the field of compound fertilizers, in particular to a foliar fertilizer for preventing and treating iron-deficiency chlorosis of pear trees. Background technique [0002] So far, there are many kinds of treatment techniques for iron deficiency chlorosis of fruit trees, most of which focus on soil fertilization, applying inorganic iron fertilizers, various chelated iron with strong stability, chelated iron and increasing organic fertilization in the soil. Fertilizer, etc., although it can alleviate the symptoms of yellowing to a certain extent, it is greatly affected by the soil pH, and the effect is slow, and the application of inorganic iron fertilizer in the rhizosphere soil is easy to be oxidized, and the topdressing fertilizer outside the root does not last long; the application of chelated iron fertilizer The cost is high, continuous application is required, and the prior art cannot solve the fundamental problem. Content...

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Problems solved by technology

[0002] So far, there are many kinds of treatment techniques for iron deficiency chlorosis of fruit trees, most of which focus on soil fertilization, applying inorganic iron fertilizers, various chelated iron with strong stability, chelated iron and increasing organic fertilization in the soil. Fertilizer, etc., although it can alleviate the symptoms of yellowing to a certain extent, it is greatly affected by the soil pH, and the effect is slow, and the application of inorganic iron fertilizer in the rhizosphere soil is easy to be oxidized, and the topdressing fertilizer outside the root does not last long; the application of chelated iron fertilizer The cost is high, continuous application is required, and the existing technology cannot solve the fundamental problem

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