11种杀菌剂防治水稻叶瘟病效果探究

Effect of 11 Fungicides on Rice Leaf Blast Prevention and Cure

进行11种农药防治水稻叶瘟病的田间药效试验,结果表明:250 g/L嘧菌酯水悬浮剂、75%三环唑水分散粒剂、25%咪鲜胺乳油、70%甲基硫菌灵可湿性粉剂、9%吡唑醚菌酯微囊悬浮剂、325 g/L苯甲·嘧菌酯悬浮剂、6%戊唑醇微乳剂、2%春雷霉素可湿性粉剂、1 000亿芽孢/g枯草芽孢杆菌可湿性粉剂、40%稻瘟灵乳油、70%氟环唑水分散粒剂等药剂对水稻稻瘟病的防效最高达94.65%,最低为74.90%。11种供试农药在试验剂量范围内均对稻瘟病有一定防治效果,325 g/L苯甲·嘧菌酯悬浮剂243.75 g/hm2试验组防治效果最佳,7 d防效为92.78%,14 d防效为94.65%。

Field efficacy trials of 11 pesticides against rice leaf blast were conducted, the results showed that： 250 grams/liter of azoxystrobin water suspension, 75% tricyclazole water dispersible granules, 25% prochloraz and 70%methylsulfide, and the results showed that： 1% pyrazole ether microcapsule suspension agent, 325 g/L benzyl azoxystrobin suspension agent, 6% tebuconazole microemulsion, 2% kasugamycin WP, 100 billion The control effect of Bacillus subtilis Bacillus licheniformis WP, 40% rice blast fungi and 70% fluorocyclazole water dispersible granules on rice blast was 94.65% and 74.90%, respectively. 11 kinds of pesticides tested in the test dose range of rice blast have a certain control effect, 325 g/L benzoin azoxystrobin suspension 243.75 g/hm2 experimental group the best control effect,7 d control effect of 92.78%, 14 d Control effect was 94.65%.