Prevention and control techniques of rice blast in rice planting

Rice blast is mainly divided into leaf blast and panicle and neck blast, is one of the important rice diseases, can cause a substantial reduction in yield, serious yield reduction of 40% to 50%, or even no grain harvest.

Prevention and control of leaf rice blast

Spray 60 kg of water with 20% tricyclazole wettable powder 100 g / m mu, or 75% tricyclazole wettable powder 25 g / m mu, or thiocyclazole 150 g-200 g / m mu, once every 5 min for 7 days, even twice.

Prevention and control of panicle and neck rice blast

The critical period is the break period, choose 75% tricyclazole wettable powder 30 g / M mu or 40% Fuji No. 1 EC 150 ml / M mu, or 21.2% plus 100 g per mu of heat, spray 60 kg of water, once every 5 colors for 7 days, even twice.