First, weed damage: Rice weeding in two fields: 1, weeding before weeding: generally 3 days after sowing of rice. 2, post-emergence weeding, 15 days after emergence. It is recommended to use daughter's milk, rice herbicide, 10% EC, active ingredient: cyhalofop-butyl.
2. Insect pests: 1, reduce the source of overwintering insects, eradicate earthworms, eliminate insects, and reduce the number of insects. 2. For the aphids that are harmful to rice, the first generation of Cangzhi, and the second generation of the decisive battle, were mainly planted with large fields and medium rice fields. The 1st and 2nd instar larvae were the best control time. Selection of pesticides: If the insect pests are serious, chemical pesticides with rapid effects, such as Kangkuan and Ruijinte, etc. should be selected; if the pest situation is not serious, biological pesticides can be used, and pesticides with long efficacy can be used for prevention, such as BT emulsions. , Bacillus thuringiensis and so on. For the migratory pests: rice planthoppers and rice leaf roller, it is mainly used to prevent and control the second and third generations. The best prevention and treatment time is the peak period of the 2nd and 3rd instar larvae. Available pesticides include buprofezin and thiamethoxam.
Third, the disease: the main prevention. Specific measures: 1, select high-quality disease-resistant varieties. 2, soaked with pesticides. Application of broad-spectrum fungicides such as chlorothalonil, thiophanate-methyl, and carbendazim soaking seeds has a good effect on the prevention of bacterial diseases such as rice blast, sheath blight, and bacterial blight. In addition to active prevention, in the event of the above-mentioned diseases in the production, pesticides such as kasugamycin should be used for timely prevention and control. If a viral disease is found, the viral disease or quarantine virus disease caused by the infestation of pests shall be reported to the relevant agricultural department for professional prevention and control in addition to active drug control.
The above are some of my personal suggestions and I hope to help the students in the production practice. Minimize the use of pesticides, use biological pesticides, use drugs at critical times of crops, reduce the number of medications, achieve the best control effect, and produce high-quality agricultural products.
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