【摘要】 室内生测结果表明，ＫＰＴＥＣ１０ｇ／Ｌ和ＳＶ１１ｇ／Ｌ及ＫＰＴＥＣ７５０ｍｇ／Ｌ和Ｂ．ｔ．１２５ｍｇ／Ｌ混用的协同毒力指数分别为８７９５％及１５０％。田间试验结果表明，ＫＰＴＥＣ５００ｍｇ／Ｌ和ＳＶ１１００ｍｇ／Ｌ及ＫＰＴＥＣ４００ｍｇ／Ｌ和Ｂ．ｔ．１００ｍｇ／Ｌ混用，施药后１５ｄ防效分别为６３１８％和８０５２％，而单用ＫＰＴＥＣ５００ｇ／Ｌ的防效仅为５１４１％，单用Ｂ．ｔ．５００ｍｇ／Ｌ的防效为６２８１％；混用的增产率为３１０９％和２８２９％；而单用ＫＰＴＥＣ５００ｍｇ／Ｌ的增产率仅为２１１１％，单用Ｂ．ｔ．５００ｍｇ／Ｌ的增产率为２３７４％。因而，ＫＰＴ和ＳＶ１及Ｂ．ｔ．混用均有增效作用。更多还原

【Abstract】 The results of laboratory bioassay showed that the index of co-toxic of the mixed use KPT(an extract of Celastrus angulatus) EC 10g/Lwith SV1lg/L and KPT750mg/Lwith B.t.125mg/L was 87.95% and 150%.The results of field experiment indicated that cumulative insect-days efficiency of that mixed use about KPT EC 500mg/L with SV1100mg/L and KPT EC400mg/L with B.t.100mg/L was 63.18% and 60.69%,respectively.But used B.t. 500mg/L and KPT EC500mg/L was 6281% and 51.41%.The yeild protection efficiency of mixed use was 31.09% and 28.29%;but KPT EC 500mg/L was only 21.11%, B.t.500mg/L was 23.74%.Thus,KPT EC mixed with synergist SV1 and B.t. preparation had obvious synergistic effect against imported cabbage worm larva.更多还原