[ Objective] The purpose was to supply experimental base for preparing new types of high efficient and safe mixture herbicide for sugarcane field. [ Method ] The associated function of MCPA-isooctyl and ametryn on Dig...[ Objective] The purpose was to supply experimental base for preparing new types of high efficient and safe mixture herbicide for sugarcane field. [ Method ] The associated function of MCPA-isooctyl and ametryn on Digitaria sanguinalis and Celosia argentea was evaluated by co-tox. icity coefficient method by potting experiment. [ Result] When active ingredient of MCPA-isooctyl and ametryn was mixed in the proportion of 9： 5, there was obvious synergistic effect on D. sanguinalis and C. argentea, while the co-toxicity coefficients reached 156.24 and 140.40. Proportion method and bisection method were used to confirm the optimum proportion of various ingredients in mixture of MCPA-isooctyl and ametryn, and the optimum proportion was as follows： 35.4% MCPA-isooctyl, 19.6% ametryn, 10.0% emulsifier and the rest were solvents. The stability test indicated that each index of this EC was consistent with standard for pesticide EC. Field efficacy test of 55% MCPA-isooctyl and ametryn EC showed that most weeds in sugarcane field could be effectively controlled with the dose range of 1 073 -2 310 g （a. i. ）/hm^2. [ Conclusion ] Mixture product of ametryn and MCPA-isooctyl with high content was successfully developed, which had the advantages including high efficiency, broad spectrum, good economy and convenient utilization, etc.展开更多
利用室内浸渍法测定了阿维菌素、辛硫磷与氯氰菊酯复配对斜纹夜蛾P roden ia L itura(F abric ius)的毒力,并用Horsfa ll的毒力试验设计及Sun-Johnson的共毒系数(CTC)法评价了它们的联合作用。结果表明,当阿维菌素与氯氰菊酯以LC50剂量8...利用室内浸渍法测定了阿维菌素、辛硫磷与氯氰菊酯复配对斜纹夜蛾P roden ia L itura(F abric ius)的毒力,并用Horsfa ll的毒力试验设计及Sun-Johnson的共毒系数(CTC)法评价了它们的联合作用。结果表明,当阿维菌素与氯氰菊酯以LC50剂量80∶20、70∶30比例复配时,共毒系数分别为94.07、110.55,表现为相加作用。而辛硫磷与氯氰菊酯以LC50剂量20∶80、10∶90比例复配时,共毒系数则分别为154.81、158.19,表现为增效作用。展开更多
基金Supported by Guangxi Youth Fund Project(Guikeqing0832062)~~
文摘[ Objective] The purpose was to supply experimental base for preparing new types of high efficient and safe mixture herbicide for sugarcane field. [ Method ] The associated function of MCPA-isooctyl and ametryn on Digitaria sanguinalis and Celosia argentea was evaluated by co-tox. icity coefficient method by potting experiment. [ Result] When active ingredient of MCPA-isooctyl and ametryn was mixed in the proportion of 9： 5, there was obvious synergistic effect on D. sanguinalis and C. argentea, while the co-toxicity coefficients reached 156.24 and 140.40. Proportion method and bisection method were used to confirm the optimum proportion of various ingredients in mixture of MCPA-isooctyl and ametryn, and the optimum proportion was as follows： 35.4% MCPA-isooctyl, 19.6% ametryn, 10.0% emulsifier and the rest were solvents. The stability test indicated that each index of this EC was consistent with standard for pesticide EC. Field efficacy test of 55% MCPA-isooctyl and ametryn EC showed that most weeds in sugarcane field could be effectively controlled with the dose range of 1 073 -2 310 g （a. i. ）/hm^2. [ Conclusion ] Mixture product of ametryn and MCPA-isooctyl with high content was successfully developed, which had the advantages including high efficiency, broad spectrum, good economy and convenient utilization, etc.
文摘利用室内浸渍法测定了阿维菌素、辛硫磷与氯氰菊酯复配对斜纹夜蛾P roden ia L itura(F abric ius)的毒力,并用Horsfa ll的毒力试验设计及Sun-Johnson的共毒系数(CTC)法评价了它们的联合作用。结果表明,当阿维菌素与氯氰菊酯以LC50剂量80∶20、70∶30比例复配时,共毒系数分别为94.07、110.55,表现为相加作用。而辛硫磷与氯氰菊酯以LC50剂量20∶80、10∶90比例复配时,共毒系数则分别为154.81、158.19,表现为增效作用。
