中文摘要：

研究了30%二烯丙基三硫乳油（南昌农药厂提供）对稻瘟病菌的抑制和防治作用,结果显示3,0%二烯丙基三硫乳油对稻瘟病菌的EC50为81.04413 mg/L,对稻瘟病菌孢子孢内的隔膜、胞质具有溶解作用,从而抑制稻瘟病菌孢子的萌发;田间药效试验中,供试药剂的中、高剂量的防效与对照药剂75%三环唑可湿性粉剂（有效含量22.5 g/hm2）的防效无显著差异,但低剂量的防效极显著低于对照药剂的防效,且具有一定的增产作用。

英文摘要：

The author studied the inhibiting and controlling effect of 30% diallyl trisulfide EC supplied by Nanchang Insecticide Factory on rice blast.The results indicated that the EC50 of 30% diallyl trisulfide to the pathogen of rice blast was 81.04413 mg/L,and it could dissolve the septum and cytoplasm of the rice blast spore to restrain the spore budding.The results of field trials showed that there was no significant difference in the control efficiency among high-dose and middle-dose of 30% diallyl trisulfide EC and 75% tricyclazole wettable powder（the check fungicide,its effective content is 22.5 g/hm2）,but low-dose of 30% diallyl trisulfide had significantly lower control efficiency than the check fungicide.Applying 30% diallyl trisulfide EC could increase the yield of rice to a certain extent.