Field green Chinese onion pest and disease preventing and controlling method

Abstract

The invention discloses a field green Chinese onion pest and disease preventing and controlling method. The field green Chinese onion pest and disease preventing and controlling method comprises the steps that 1, a plot flat in terrain and good in water drainage is selected, fine soil preparation is performed to remove preceding crop residues, and then 40-60 kg / mu of base fertilizer green base No.1 and 80-100 kg / mu of biological bacterium soya bean meal organic fertilizer are applied, wherein 4-6 kg / mu of 'Guandaodi' is applied along with the base fertilizer; 2, ridging is performed, and first time of watering is performed, wherein 18-25 kg / mu of seaweed microbial agent is applied with the water; 3, at different growing stages of green Chinese onions, pesticides are sprayed at regular intervals. Compared with the prior art, the microbial fertilizer and the like are added while pesticide spraying to achieve mutual inhibition of bacteria and improve the resistance of the green Chinese onions to diseases and pests, possibly occurred at different growth stages and under different weather conditions, of the field green Chinese onions. 'Emphasis on prevention and prevention and control combination' are achieved. In addition, most of the adopted pesticides are green biological agents and are high in efficacy, small in toxicity and environmentally friendly. The resistance of the green Chinese onions themselves is improved.

Description

technical field [0001] The invention relates to the technical field of agricultural seedling raising, in particular to a method for preventing and controlling plant diseases and insect pests of shallots in the field. Background technique [0002] Scallion is a perennial herb belonging to the genus Allium in the family Liliaceae. It is native to China and is now distributed all over the world. At present, my country's scallions still adopt backward extensive field management methods, mainly using carbofuran, chlorpyrifos and other highly toxic and high-residue insecticides and various fungicides, which do not have the effect of promoting growth and promoting root and seedling growth. The quality of scallions varies from good to bad, and pests and diseases often occur during the growth period. In the prior art, measures are taken to treat after the occurrence of disease and insect pests during actual planting, and once some diseases are discovered, they will have a great imp...

AI Technical Summary

Problems solved by technology

At present, my country's scallions still adopt backward extensive field management methods, mainly using carbofuran, chlorpyrifos and other highly toxic and high-residue insecticides and various fungicides, which do not have the effect of promoting growth and promoting root and seedling growth. The quality of scallions varies from good to bad, and pests and diseases often occur during the growth period

In the prior art, measures are taken to treat after the occurrence of diseases and insect pests during actual planting, and once some diseases are discovered, they will have a great impact on the growth of green onions, which are not only difficult to treat, but also cause serious losses.