七种农药防治水稻稻曲病效果比较

Effects Comparison of Seven Kinds of Pesticide for Control of Rice False Smut

用生产上常用的防治稻曲病农药井冈霉素(2种)、戊唑醇、枯草芽孢杆菌、己唑醇、稻瘟灵、蜡质芽孢杆菌进行水稻稻曲病防治效果比较试验,结果表明,7种农药在厂家推荐用量下,防治效果为81.01%～86.48%,防治效果最高的是1 000亿个活芽孢/g枯草芽孢杆菌WP 660 g/hm2处理,但与430 g/L戊唑醇FW 150 g/hm2、20%井冈霉素WP 750 g/hm2、430g/L己唑醇FW 261.6 g/hm2、40%稻瘟灵EC 1 407.5 g/hm2、25亿CFU/g蜡质芽孢杆菌WP 660 g/hm2处理的防治效果差异不显著,只与5%井冈霉素AS 1 800g/hm2处理的防治效果差异显著,但所有处理间无极显著差异。因此,生产上可从用药量、用药成本、药品价格等方面综合考虑,灵活选择常用的防治水稻稻曲病农药。

7 pesticides oftenly-used in rice production,such as jinggangmycin（2 kinds）,tebuconazole,Bacillus subtilis、hexaconazola、isoprothiolane and B.cereus,were selected to compare their effects of controlling rice false smut.The results showed that the control effects of these pesticides ranged from 81.01% to 86.48% at recommendatory dosage.The 1×1011 CFU/g B.subtilis WP had the best control effect which had no significant difference with 430g/L tebuconazole FW,20% jinggangmycin WP,430g/L hexaconazole FW,40% isoprothiolane EC and 2.5×1011 CFU/g B.cereus WP,but had significant difference with the 5% jinggangmycin AS.Therefore,the selection of pesticide for rice false smut controlling could be decided by the factors such as dosage of pesticide,cost,price and so on.