Main points of comprehensive prevention and control techniques for main pests and diseases of Binchuan onion and garlic in Yunnan

Principles of prevention and control: In accordance with the principle of “prevention first, comprehensive prevention”, priority is given to agricultural control, physical control, biological control, rational use of chemical control, and the prohibition of using high-toxic and high-residue pesticides prohibited by the State.
   I. Agricultural control: Select resistant varieties, do not bring disease, seedlings and weak seedlings into the field, and promptly remove field weeds, diseased plant residues, timely cultivating, scientific irrigation, rational fertilization, and enhanced plant resistance. Sex.
Second, physical control: through the installation of insecticidal lamps, placing sexual attractants, swatches, to reduce the number of insect base, reduce the amount of pesticides, reduce pollution, reduce costs.
   Third, biological control: in accordance with the pest control, insect control concept. First, protect and use natural enemies, create environmental conditions conducive to the survival of natural enemies, choose to use pesticides with low lethality to natural enemies; second, use biologically-sourced pesticides, such as fungal diseases: blasticidin, geranol, multi-anti-mildew Succulent, Jinggangmycin, Nongkang 120, Zhongshengmycin, etc.; the prevention and treatment of mites are Liuyangmycin, Huaguangmycin and so on. There is also a fungicide such as Verticillium lecanii; the bacterial agents are Bacillus thuringiensis, Bacillus cereus, and the like.
Fourth, chemical prevention and control: combined with forecasting and forecasting, focus on the prevention and prevention of the following pests and diseases.
1. Aphids: The recommended pesticides are: 10% imidacloprid wettable powder 3000-5000 times liquid, 50% anti-weiwei wettable powder 1000-2000 times liquid, 3% acetamiprid emulsifiable concentrate 3000-5000 times liquid or 20% Ding Sulfur Kebuwei emulsifiable concentrate 1000-2000 times liquid.
2, onion horse: When the number of insects in the field reaches the control index, 4.5% beta-cypermethrin EC 2000 times solution or 1.8% avermectin EC 3000 times solution or 10% imidacloprid wettable powder 3000 times solution can be used alternately. Once every 7-10 days, even spray 2-3 times.
3, onion downy mildew: early stage of the disease can be used 75% chlorothalonil WP 700 times liquid or 72% can be exposed WP 600 times solution, or 40% pyrimethanil suspension 800 times solution or 80% enoyl The porphyrin water dispersing agent 2000 times liquid and the like are used alternately, once every 7-10 days, and even sprayed 2-3 times.
4, onion gray mold: in the early stage of the disease can be used 50% wettable powder 500 times liquid or 70% methyl thiophanate WP 500 times liquid or 25% metalaxyl WP 1000 times solution, or 40% Pythium The amine suspension agent 800 times liquid and other agents are used alternately, once every 7-10 days, even spray 2-3 times.
5, garlic leaf blight, purple spot disease: the initial stage of the disease can be used 75% chlorothalonil wettable powder 500-600 times liquid or 10% Shigao 2000 times liquid or 58% metalaxyl manganese zinc 500 times liquid alternately used, 7- Once every 10 days, even spray 2-3 times.
6, Sclerotinia: at the beginning of the disease with 10% sclerotium net wettable powder 500 times liquid or 40% sclerotium net. Carbendazim WP 1000-1500 times liquid for prevention, 7-10 days, even spray 2 -3 times.
7. Garlic rust: In the early stage of the disease, 15% triazolone wettable powder 1500 times solution or 70% mancozeb WP 1000 times solution or 25% azoxystrobin suspension 1500 times solution is used alternately, 10-15 Control once a day, prevention and control 2-3 times.