摘要
15R涕灭威颗粒剂在棉花现蕾期土壤穴施防治棉蚜“伏蚜”,安全、经济、效果显著。经小区试验,每公顷施用3.75,5.25,7.5kg,防治效果均达90%以上。大田试验表明:每公顷施用3.75,5.25kg,药后第13,18,25天防效均在91%以上,持效期在2个月以上.经测产,防治区产量比对照区增产69～74%。经检测,间隔63～97d 棉籽内农药残留量为0～0.035 ppm,平均为0.01 ppm,远低于我国及美国等国家推荐的最高允许残留量(0.1 ppm)的标准。
The field experiments show that treating soil of cotton field with aldicarb granule to control cotton aphid had very satisfactory results in Turpan,Xingjiang,1987～ 1988.The controlling efficiency by treating soil of 15% Tcmik granule 3.75,5.25 and 7.5 kg/ha within 25 days after treating reached 90% or over,and the residual effect of in- secticides for 60 days or move.Residue analysis showed that the residus of insecticideson the seed of cotton were ranging between 0～0.035 ppm,within 63-97 days.
关键词
棉蚜
涕灭威
土壤
施药
棉花
防治
Aphis gossypii Glover
aldicarb
treating soil
cotton
