Q: When is the insect period in the recent period? A: The rice is at the end of the tillering stage. There are a small number of mites in the field. When is the pest control? It is understood that the "four diseases and three insects" in the middle and late stages of rice in Jiangsu Province (rice blast, rice smut, sheath blight, bacterial diseases and rice leaf roller, rice planthopper, aphids) will occur in moderately, in different regions, Different cultivation methods have large imbalances between pests and diseases. The main focus of production is to fight three overall battles. The first time from the end of July to the beginning of August, along the Taihu Lake and along the Yangtze River, the two-shift pests and sheath blight are the main targets, and other areas are mainly attacking the sheath blight; The second time in mid-August, the main attack on sheath blight, rice leaf roller, rice planthopper, aphid, etc.; the third time from late August to mid-September, large-scale rice breakting heading period, the main attack rice Disease, panicle neck blight, sheath blight and "two move" pests, aphids. Hybrid rice planting areas should be controlled in response to pests such as rice false smut and rice blast in mid-August, and use broken drugs. Bacterial disease recurrence areas such as bacterial blight and bacterial base rot need to be targeted for separate use. In the later stage of rice growth, according to the occurrence of rice leaf roller and brown planthopper, the customs should be well-suited to ensure the control of the damage. Suitable drugs for controlling rice sheath blight include thiazolamide, azoxystrobin, epoxiconazole, propiconazole, hexaconazole, difenoconazole, tebuconazole, thiazolidine, and sputum. Tebuconazole, benzoyl azoxystrobin, benzomethoxazole, tebuconazole, azoxystrobin and other drugs have good control effect on rice sheath blight, and have a long-lasting effect. Phytophthora, tebuconazole, benzoyl azoxystrobin, ethiazole, azoxystrobin and other drugs have good preventive and therapeutic effects on rice leafhopper, and those with heavy rice stalks can preferentially use these drugs to control the lines. Blight disease, and treat rice leafhoppers. Generally, it is used in the late stage of rice tillering or in the early stage of rice sheath blight (5% of disease rate). Pay attention to the alternating use of drugs to delay the development of bacterial resistance. While ensuring the amount of foot medicine, the amount of water should be sufficient to ensure that the liquid is sprayed to the susceptible part of the rice base. Abamectin, emamectin benzoate, indoxacarb, tetrachloremamide, chlorantraniliprole, ethyl spinosyn, cyanofluorfen, etc. The mites have good control effects and can be used according to local conditions. Chloramphenicol benzamide, tetrachloremamide and other drugs are highly systemic, and the use of these drugs is beneficial to protect new leaves. The first comprehensive use of drugs in rice production to control pests and diseases in the middle and late stages, the above-mentioned fungicides and insecticides can be mixed according to local conditions. More pesticide knowledge, please pay attention to China Pesticide Network (Source: Jiangsu Agricultural Science and Technology News)
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