Method for preventing and controlling black-dot disease of bagged apples

Abstract

The invention discloses a method for preventing and controlling the black-dot disease of bagged apples. The method is a biological comprehensive prevention and control method which mainly uses Chinese herbal medicine tincture. The method comprises the steps of applying bio-organic fertilizer and medium-trace element fertilizer without applying nitrogen-phosphorus-potassium compound fertilizer, uniformly covering crop straws or weeds with thickness of 25 centimeters in a crown projection range all the year, and spraying pesticide tincture prepared by cortex pseudolaricis, radix stemonae, rhizoma coptidis, illicium verum and moutan bark in a flowering phase. The preventive rate can reach 96.7% through field trial, no pesticide is remained, the preventive and control cost is low and the method is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of prevention and control of fruit tree diseases and insect pests, in particular to a method for preventing and treating black spot disease of bagged apples. Background technique [0002] Apple bagging can significantly reduce the damage of diseases and insect pests, improve fruit coloring, improve the smoothness and appearance quality of fruit surface, and is one of the important technologies to improve the economic benefits of apples. To the expected effect. But at the same time, various places have successively found that black spot disease is very prone to occur on the fruit surface after bagging. After the onset, not only the appearance is not improved by bagging, but the defects of the fruit surface are increased. Through the experimental research of fruit tree science and technology workers and fruit growers, the mechanism and control methods of black spot disease have been clarified. Its symptoms, ...

AI Technical Summary

Problems solved by technology

It does not expand and spread during the late growth period and storage period, and has no effect on the internal quality, but has a great impact on the appearance quality and selling price

[0003] At present, there is still no effective method for the prevention and treatment of this disease. Generally, chemical control technology is used, such as spraying Dasheng M-45, mancozeb, mancozeb, mancozeb, ethylaluminum and other pesticides before bagging. Large residues affect fruit quality; some orchards adopt control techniques such as scientific plastic pruning, improving light transmission conditions, scientific fertilization, selection of high-quality fruit bags, orchard weeding, etc., but the control effect is still unsatisfactory

Images