First, disease prevention and control: (1) rust: As a common disease, many occurred in early May. Control methods: In the initial stage of disease, use 15% triadimefon wettable powder 300-500 times liquid or Weishenling 400-600 times liquid, it is best to use biological pesticide GreenTaibao 600-800 times liquid spray. Spray once every 7-10 days, even spray 2-3 times. We must also strengthen field management and remove weeds and litter from the fields; (2) Botrytis: It usually occurs in the middle or late May. Control methods: Can be used biological pesticides Trickle WP 600-800 times or 7% thiophanate-methyl wettable powder 1000 times spray, spray every 7-10 days, and even spray 2-3 times. And to reasonably control the plant density, the application of phosphorus, potassium fertilizers, remove litter; (3) black rot: the incidence of more old areas, prevention and control methods: in the preparation of soil with 1% sulfuric acid solution for disinfection. During the growing period, the diseased plants were found in time to be extirpated and disinfected in the ward with 1% copper sulfate solution. In the early stage of disease, 50% carbendazim WP 1000 times solution or 40% nucleus agent 400 times solution is used to infuse the soil in the ward, and it is best to infuse the biological pesticide Terek 1500-2000 times. 2. Insect pest control: (1) Earthworms: In late June, the endangerment period was severe and the third-instar larvae were seriously endangered. Control methods: Apply sufficient organic fertilizer to reduce the source of insects. The use of living biological pesticides Metarhizium spp. to prepare bacterial soil, 2kg per acre of bacteria, mixed fine soil 500kg, applied in the preparation of earthworms. (2) Earthworms: Harmful to adults and nymphs, generally low temperatures in early spring, high soil moisture, early earthworms and heavy damage. Control methods: Using the phototaxis of earthworms, I ignite firewood in the field after dark days, and induce the earthworms to fly to the fire. Can be used 80% crystal trichlorfon 1kg, wheat bran or corn bran 50kg ratio, the agent is added to the appropriate amount of water and diluted into bait, made bait, but the bait should be first roasted fragrance is appropriate, after 4 pm, the bait A small pile was placed in the field for baiting. Pay attention to livestock safety.
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