Plutella xylostella is a kind of infrequent pest in our county, commonly known as “hanging ghostsâ€. The larvae have large food intake, strong resistance to drugs, and have the characteristics of harming the heart of the leek. They are overlapped from generation to generation and are difficult to control. According to the county plant protection station field system monitoring: the occurrence of moderate occurrence of diamondback moth, the future trend of aggravating. From June 7th to June 16th, a total of 240 adult insects were detected on the tenth day of the report lamp, 312 less than the same period of last year, close to the same period of the previous calendar year. Among them, June 5th was the moth peak day, and 112 insects were single-day moths. On June 14-17, a total of 350-500 larvae were found in 100 larvae of cabbage, cauliflower, and cabbage, and 100 larvae were found in severe plots, and 11 larvae were found in the highest plots. At present, cabbage and cauliflower have entered the ball stage, the host is extensive, and it is beneficial to adult oviposition and larvae. It is recommended that the following drugs be used in the production before the third instar for prevention and treatment. 1, Mu with 1% celangulin EC 50-70 ml, watered 60-70 kg evenly spray. 2. Use 1.8% avermectin EC 1000-1500 times solution or 1% AVS emulsifier 4000-6000 times solution spray. Pay attention to spraying both sides of the positive and negative, it is best to add some adhesive, the young part of the heart to spray more, while at the same time, cabbage caterpillars, rapeseed mealybug, cabbage beetle and other pests
Puyang Linshi Medical Supplies Co., Ltd. , https://www.linshimedical.com