What are the common pests and diseases of rice? How should they be prevented and controlled?

Rice has been a staple food for people since ancient times, and every year a large number of farmers grow rice. If rice is infected with pests and diseases, it may cause a reduction in yield, so what are the common pests and diseases of rice? How should they be prevented and controlled?

1. Prevention and control methods for rice blast

1. Prevention and control of rice leaf blast: when lesions appear in the field, use 100 grams of 20% tricyclazole wettable powder, dilute with 45 kg of water and spray for control; 15 mL of 30% Jiemiao emulsifiable concentrate, dilute with 45 kg of water and spray for control, 200-250 mL/mu of 50% sulfur triazole, apply twice in succession, once every 5-7 days.

2. Prevention and control of rice panicle blast: the best period for preventing and controlling rice blast is the breaking stage. The agents selected are: 30 grams per mu of 75% tricyclazole wettable powder; or 150 mL per mu of 40% Fuji No. 1 emulsifiable concentrate; choose either of the two agents, dilute with 45 kg of water and spray for control, apply three times in succession, once every 5-7 days.

2. Prevention and control methods for rice bacterial leaf blight

When lesions appear in the field, apply pesticide immediately for control. The agents selected are: 100 grams per mu of 25% Chuanhua 018 wettable powder, dilute with 45 kg of water and spray for control; or use 2 packets per mu of agricultural streptomycin, dilute with 45 kg of water and spray for control.

3. Prevention and control methods for rice sheath blight

The best period for prevention and control is the booting stage. The agents selected are: use 2 packets of jinggangmycin per mu of rice, dilute with 45 kg of water and spray for control; or use 40 grams per mu of 75% Daocuruwenkuling wettable powder, dilute with 45 kg of water and spray for control; at the same time, 20 mL of 30% Jiemiao emulsifiable concentrate can be diluted with 45 kg of water and sprayed for control.

4. Prevention and control methods for rice false smut

Rice false smut mainly occurs in the late growth stage. The prevention and control period should seize the booting stage or heading stage. The agents selected are: (1) use 2 packets of jinggangmycin plus 100 grams of 15% triadimefon per mu, dilute with 45 kg of water and spray for control; (2) 25 mL of 30% Jiemiao emulsifiable concentrate diluted with 45 kg of water and sprayed for control. (3) 40 grams per mu of 70% Nasijin wettable powder diluted with 45 kg of water and sprayed for control.

5. Prevention and control methods for rice planthoppers

Rice planthoppers mainly inhabit the base of rice clumps, sucking plant sap, causing rice plants to turn yellow and affecting yield. The control agents selected are: 30 grams per mu of 25% Youlede wettable powder; or 100 grams per mu of 25% spedemycin wettable powder, dilute with 45 kg of water and spray for control; 100 mL per mu of 20% Yamangling emulsifiable concentrate can also be diluted with 45 kg of water and sprayed for control. Saqinone or 30 grams per mu of 10% imidacloprid diluted with 45 kg of water can also be sprayed for control.

6. Prevention and control methods for rice stem borers

After rice stem borers damage rice, they cause dead hearts or white heads. The control agents selected are: use 30 grams per mu of rice of 98% padan original powder mixed with 25 kg of fine soil and broadcast; or use 80 grams per mu of rice of 50% Mingpa wettable powder diluted with 45 kg of water and sprayed for control; at the same time, 150 mL of 25% quinalphos emulsifiable concentrate diluted with 45 kg of water can also be sprayed for control.

Rice cultivation requires attention to the prevention and control of pests and diseases, so that it can grow better. I hope everyone can obtain a good harvest.