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The main pests and diseases on rice include rice blast, white field blight, sheath blight, rice aphid, rice leaf roller, rice planthopper, rice blast, rice locust and so on. At present, drug control is still the main means of prevention and control of rice pests and diseases, but it is necessary to do a good job in forecasting and forecasting pests and diseases, pay attention to prevention and control strategies, master the appropriate period of prevention and treatment, and rationally use drugs.
1. Seedling stage. It should be based on the control of rice thrips and the treatment of rice leaf miners and nurseries. After the damage of the rice thrips, when the rate of leaf rolling is more than 20%, spray 15 g of 10% imidacloprid per acre on water, or 2 kg of 3% carbofuran. Prevention and control of small leaf miner flies, in the "infested" leaves appear in the peak period, with 90% of insecticidal single wettable powder 40g or 40% of long-acting phosphorus emulsifiable concentrate 50ml per acre. In the early stage of the nursery, the spray is sprayed with 20% tricyclazole or Fuji No. 1 soluble powder per acre.
2, by the Xue booting period. The control should be based on the control of rice borer and sheath blight, and the control of rice planthoppers, rice leaf roller, rice locusts, etc., and the use of organophosphorus pesticides (such as 50% methamidophos 50 grams) per acre plus 18 % insecticidal double-water agent 250 ml watering 200 kg, can treat rice leaf roller, rice locust and rice locust, etc., 90% insecticidal single powder 50 gram or 5% sharp per acre 40 grams of Jinte Suspending Agent is sprayed on water, but it must be noted that fish, shrimp, crab and rice fields cannot use Ruijinte pesticides. For the control of sheath blight, 100 g of jingjingmycin per acre can be sprayed with 15 ml of 885 auxiliaries. For the control of rice planthopper, 15 g of imidacloprid 15 g or 25% of chlorpyrifos 50 g plus 885 auxiliaries 15 ml per acre can be sprayed on water.
3, heading, grouting, milk maturity. It should be based on the prevention and treatment of panicle neck lice and rice planthoppers, and the treatment of bacterial blight. Prevention and treatment of panicle neck sputum can be sprayed with 20% tricyclazole or 20% Fuji No. 1 soluble powder 100g plus 885 auxiliaries 15ml per acre at the end of the booting stage and at the beginning of heading. It can also be treated with 40% rice bran. For the control of rice planthopper, 15 g of imidacloprid 15 g or 25% of chlorpyrifos 50 g plus 885 auxiliaries 15 ml per acre can be sprayed on water. When the field of white blight is found in the field, the control of water with 25% leaf dried dexamethasone
The above control methods are also applicable to rice transplanting, direct seeding rice and throwing indica rice.
WENZHOU DIYE VALVE&FITTINGS CO.,LTD , https://www.diye-valve.com