杀虫双不同剂型和施药方法防治水稻三化螟效果

Comparison With the Effects of Different Formulation and Application Method of Bisultap Controlling Second Generation Scirpophaga incertulas in Paddy Field

不同剂型的杀虫双和不同的施用方法对水稻二代三化螟防治效果和对稻田天敌的影响有不同结果。用18 %杀虫双水剂250mL或5 %杀虫双颗粒剂1500g拌细土撒施其防效较好 ,能分别达94.15 %和95.42% ,且省工省时 ,对天敌影响小。

There are different efficacy and different influences to natural enemies,when using different type of formulation and application method of bisultap controlling second generation scirpophaga incertulas in paddy field .In late july,it is get better result that using 250mL of 18%bisultap solution or 1500g of 5%bisultap granule mixes with tiny soil thoroughly to broad cast over 667m2 paddy fields, than using spray application method .The efficacy reaches amount of 94.15% and 95.42% respectively and it not only saves time and labor cost but also has very small influence upon natural enemies.