Organic fertilizer for preventing and controlling Panama disease, vacant shell disease and white tip disease of walnuts and preparation method thereof

Abstract

The invention discloses an organic fertilizer formula rich in active iron and zinc. According to the fertilizer, through the steps that iron and zinc ions are chelated by citric acid and secondarily chelated by amino acid and polypeptide materials which are generated after bean pulp peridia and bean pulp are fermented, the effectiveness of iron and zinc is improved to the maximum limit, and the problems that the effectiveness is low if ferrous sulfate is directly applied, and EDTA-Fe is expensive and difficult to apply and popularize in large area are solved; the bean pulp materials are rich in nutrient elements such as nitrogen, phosphorus, calcium and sulfur, the nutrient elements such as zinc, boron and potassium are appropriately supplemented in the fertilizer, and therefore the problems of the physiological iron deficiency Panama disease of the walnuts, the vacant shell disease of the walnuts, the white tip disease of the walnuts, physiological fruit drop and the like are effectively solved.

Description

technical field [0001] The invention relates to an organic fertilizer, in particular to an organic fertilizer rich in active iron, zinc and boron for preventing and treating iron-deficiency "yellow leaf disease" of walnuts on calcareous soil, and "white tip" of empty shells and hemp walnuts, and a preparation method thereof . Background technique [0002] The high pH value of calcareous soil in northern China leads to low soil nutrients such as iron and zinc. Walnut is one of the main fruit trees in this area. Iron deficiency "yellow leaf disease", empty shell, hemp walnut "white tip" and so on are the main factors leading to the reduction of walnut yield and quality. At present, excessive application of nitrogen, Phosphorus and potassium fertilizers have aggravated the above-mentioned physiological diseases of walnuts to a certain extent, and solving the iron-deficiency "yellow leaf disease" of fruit trees has always been a difficult problem in the world. The main reason i...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of organic fertilizer that prevents and treats walnut yellow leaf disease, empty shell, white tip, utilizes citric acid, amino acid in fermented soybean meal, polypeptide class material and Fe 2+ , Zn 2+ Chelation improves its effectiveness and solves the problems of expensive production of EDTA-Fe and difficulty in large-area application