Method for supplementing zinc fertilizer to fruit trees and controlling little leaf disease

Abstract

The invention provides a method for supplementing zinc fertilizer to fruit trees and controlling the little leaf disease. The method comprises the following steps: high-concentration foliar fertilizer is sprayed in late spring dormancy, sprayed in a leaf mature period for the first time and sprayed in the leaf mature period for the second time. The high-concentration foliar fertilizer with different formulae is sprayed in fruit tree leaf slow growth or dormancy stages such as the late spring dormancy, the leaf mature period and senescence period and the like of the fruit trees, and the little leaf disease of the fruit trees is controlled. With adoption of the method, the little leaf disease control effect is obvious, the little leaf disease incidence rate after spraying in an orchard is smaller than 1%, and the method has especially obvious effect on control of the little leaf disease of the fruit trees in saline-alkali soil.

Description

technical field [0001] The invention relates to a method for supplementing zinc fertilizer for fruit trees and preventing and treating lobular disease, which belongs to the field of agricultural technology. Background technique [0002] Small leaf disease of fruit trees is a physiological disease caused by the lack of zinc. It mainly harms new shoots and leaves. In the early stage of the disease, the shoots have short internodes, small leaves on the top tips are clustered or bare, easy to fall early, difficult to flower and fruit set, and low yield. or not. The organic matter formed by photosynthesis of fruit trees due to zinc deficiency cannot function normally, resulting in chlorosis of leaves, stunted growth, and affects yield and fruit quality. Zinc deficiency is common in sandy land, alkaline soil, barren land and mountain orchards, especially in saline-alkali land. At this stage, there are mainly the following methods for the prevention and treatment of lobular disea...

AI Technical Summary

Problems solved by technology

Spraying foliar fertilizer is an effective way to grow strong trees, resist diseases and increase yields. The method is simple and easy to use. The fertilizer is economical and the effect is obvious. However, due to the low level of farmers’ awareness, it is not possible to use zinc nutrients according to the different growth stages of fruit trees. The application of different concentrations of foliar fertilizers will cause the fertilizers to fail to fully exert their effects. Generally, when spraying low-concentration foliar fertilizers, the absorption of leaves is limited, and good results cannot be achieved.

[0005] The existing method for preventing and treating small leaf disease of fruit trees has the following defects: (1) the incidence rate of small leaf disease is high; (2) the efficiency is low and the effect is slow; (3) the leaf area of ​​fruit trees is small, the yield is low, and the commercial fruit rate is low; ( 4) Blind use of fertilizer, and fertilizer damage has occurred; (5) The method is complicated and the cost is high