Current occurrence of vegetable diseases and insect pests and its control suggestions

   Date:2021-11-05     Browse:13    
Core tips:At present, eggplant fruits, melons, beans and other vegetables in soil are mainly in the peak period of fruit bearing.

At present, eggplant fruits, melons, beans and other vegetables in soil are mainly in the peak period of fruit bearing. Due to the recent continuous rainfall and high field humidity, it is conducive to the occurrence and prevalence of serious diseases and pests. The overall occurrence degree of diseases and pests is grade 3, which is more important than that in the same period of last year. Among them, the incidence of epidemic disease was grade 3, which was heavier than that in the same period of last year. The average disease plant rates of tomato late blight, Pepper Blight and eggplant blight were 11.5%, 12.1% and 13.2% respectively, 3.7, 4.8 and 5.1 percentage points higher than that of the same period last year; The incidence of Botrytis cinerea was grade 3, and the average diseased plant rate was 13.5%, which was 6.8 percentage points higher than that of the same period last year; The occurrence degree of downy mildew was grade 3, which was heavier than that in the same period of last year, and the average diseased plant rate was 7.5%; The occurrence degree of bean borer was grade 2, and the average pod borer rate was 3.5%, 2.1 percentage points higher than that of the same period last year; The occurrence degree of Pieris rapae was grade 2, and the average rate of infested plants was 2.2%, 0.8 percentage points higher than that of the same period last year. Through comprehensive analysis and judgment, it is estimated that the overall occurrence degree of vegetable diseases and insect pests in the next stage is grade 3, mainly including Phytophthora, gray mold, bean borer and night moth. Suggestions: the agricultural plant protection departments of all districts and counties must strengthen the monitoring of vegetable diseases and insect pests and release the information of diseases and insect pests in time. Carry out publicity and training on vegetable pest control technology and scientific and safe drug use, and guide growers to give priority to adopting measures such as frequency vibrating insecticidal lamp, insect trap board and insect sex attractant according to different objects to implement green prevention and control; Grasp the initial stage of disease and the peak period of young larvae, give priority to biological pesticides, and rotate the use of high-efficiency, low toxicity and low residue chemical pesticides to reduce the loss of disease and insect damage.

 
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