不同种子处理剂对水稻恶苗病的防治效果

目的]筛选对水稻恶苗病防治效果较好的种子处理剂。方法]采用9种种子处理剂处理水稻种子，对水稻恶苗病的防治效果进行了试验。结果]9种种子处理剂中5．5％浸丰2号EC1：5000倍液、12．5％戊氟丹WP1：1000倍液、12．5％戊氟丹WP1：1200倍液、12．5％戊咯丹WP1：1000倍液、12．5％戊咯丹WP1：1200倍液对水稻恶苗病有较好的防治效果，秧田期达90％以上，且有提高水稻发芽率、成苗率、增加田间分蘖的作用。20％氰烯菌脂EC1：2000倍液、20％氰烯菌脂·杀螟丹WP1：1200倍液、16％咪丹WP1-400倍液也有较好的防治效果，但明显抑制水稻发芽、成苗和大田分蘖。结论]5．5％浸丰2号EC1：5000倍液、12．5％戊氟丹WP1：1000倍液、12．5％戊氟丹WP1：1200倍液、12．5％戊咯丹WP1：1000倍液、12．5％戊咯丹WP1：1200倍液可以在生产上推广用于防治水稻恶苗病。

The Control Effect of Rice Seed Treatment Agent on Rice Bakanae

Objective ] In order to screen the best rice seed treatment agent on rice bakanae. Method ] 9 kinds of rice seed treatment agent on rice bakanae were tested. Result ] The result showed that 1：5 000 times liquid of 5.5 % j infeng 2 EC, 1：1 000 times liquid of 12.5 % wu- fudan WP, 1 ： 1 200 times liquid of 12.5 % wufudan WP, 1 ： 1 000 times liquid of 12.5 % wuiuodan WP, 1 ： 1 200 times liquid of 12.5 % wuluo- clan WP had better control effect on rice bakanae, and duration in rice nursery above 90%. They can enhance rice germination rate and seed- ling rate, increase field tillering. 1：2 000 times liquid of 20% JS399 - 19 EC, 1 ： 1 200 times liquid of 20% JS399 - 19 ~ cartap EC, 1：400 times liquid of midan WP had better control effect on rice bakanae, but they inhibited germination, seedling formation and field tillering of rice. Conclusion] l：5 000 times liquid of 5.5% jinfeng 2 ECI：I 000 times liquid of 12.5% wufudan WP, 1：1 200 times liquid of 12.5% wufudan WP, 1：1 000 times liquid of 12.5% wuluodan WP, 1：1 200 times liquid of 12.5% wuluodan WP can be used in rice practical pro- duction.