烯啶·吡蚜酮80%水分散粒剂拌种对小麦种子的安全性及蚜虫的防治效果

Effects of Nitenpyram and Pymetrozine Applied by Seed Dressing on Safety of Wheat Seed and Control of Aphids

室内采用盆栽法研究烯啶.吡蚜酮80%水分散粒剂加水拌种之后对小麦种子的安全性及对蚜虫的防治效果。试验结果表明:随着药量的增加,小麦的出苗率、侧根数和株高降低,但与对照没有显著差异;且随药量的增加对蚜虫的防治效果提高,播后45d内,用量ω=5%～6%范围内蚜虫的防治效果没有显著差异。这表明:烯啶.吡蚜酮80%加水拌种对小麦种子安全,可延长其对蚜虫的防治效果。

The objective of this study was to investigated the the safety of wheat seed and con- trol effect on aphids using mixture of 60% pymetrozine＇20% nitenpyram WG by seed dressing, indoor pot law. The results show that： the wheat germination rate, lateral root numer and plant height decrease, with the increase in the amount of drugs, comparing there is no significant dif- ferences comparing ck. The control effect increased with increasing dose. 45 days, the control effect of the aplids without significant differences in to=5%~6%.This indicates that the mixture of 60% pymetrozine-20% nitenpyram WG is security to wheat seed and Can prolong the control ef- fect to aphids.