Only 7 heavy metals' toxic coefficients are used to assess pollution degree of heavy metals in many papers that use the method of Potential Ecological Risk Index(RI),but there are still other important heavy metals not employed to calculate toxic coefficient.
在众多用潜在生态危害指数法评价重金属污染的文章中,只采用了7个重金属元素的毒性系数,但有的重金属仍是环境污染的重要组成部分。
It was usually used that screen the optimum proportion of combination insecticides through the base of co-toxicity coefficient evaluating joint action of two insecticides,but it could lead to miss of the best proportion in fact.
仅采用共毒系数法对复配剂的最佳配比进行筛选,可能造成真正最佳配比的漏筛。
It is a common way to screen the optimum proportion of combined insecticides through the method of co-toxicity coefficient to evaluate the joint action of two insecticides.
采用共毒系数法对复配剂的最优配比进行筛选可能会造成真正最优配比的漏筛,且工作量很大,具有局限性。
The results showed that when the ratio of ethanol extract to Deltamethrin was 300∶1,the ratio of acetone extract to Deltamethrin was 150∶1,the ratio of ethyl acetate extract to Deltamethrin was 300∶1 and the ratio of petroleum ether extract to Deltamethrin was 150∶1,the co-toxicity coefficient(CTC) of mixtures were the maximum.
结果表明:4种提取物与溴氰菊酯混配均有增效作用,最佳配比分别为无水乙醇提取物∶溴氰菊酯=300∶1,丙酮提取物∶溴氰菊酯=150∶1,乙酸乙酯提取物∶溴氰菊酯=300∶1,石油醚提取物∶溴氰菊酯=150∶1;对玉米象的共毒系数分别为771。
Using a cotoxicity coefficient to screen for optimal proportions of compound mixtures can cause a failure to identify the true optimum value while requiring considerable effort.
采用共毒系数法对复配剂的最优配比进行筛选可能会造成真正最优配比的漏筛,且工作量大,具有局限性。
Bioassay results revealed that mixed insecticide Jiaqing exhibited a significant synergism against oriental armyworm, bean aphid and rice leafhopper, and its cotoxicity coefficient (CTC) was 179.
生测结果表明 :甲基对硫磷与氰戊菊酯混配对粘虫、蚜虫和叶蝉表现出明显的增效作用 ,其共毒系数分别为 1 79。
5∶1,their cotoxicity coefficient(CTC)to Alternaria brassicae was 127.
5∶1时的共毒系数为127。
Co-toxicity coefficient(CTC) is an important method for evaluating the synergism of pesticides and a primary parameter for evaluating pesticide formulation designated by Ministry of Agriculture,P.
孙云沛共毒系数法是评价我国农药联合作用的主要指标之一,也是我国农业部农药检定所指定的农药配方筛选主要参考指标之一,对我国混配农药的生产和应用具有重要指导作用。
The synergistic activity of the mixture of BT and triazophos was evaluated by using the method of CTC.
室内测定共毒系数的结果表明,亲态保1号比单一制剂对斜纹夜蛾、二化螟、小菜蛾有明显的增效作用;田间药效试验结果表明,亲态保防效均高于单一制剂,其中亲态保2号和1号每亩160g剂量对3代三化螟和稻纵卷叶螟的防治效果分别为88。
In this paper, the synergistic activity of the mixture of Avermectin 1%EC and beta-Cypermethrin 5%EC was evaluated by using the method of CTC.
本文用共毒系数法,研究了1%阿维菌素乳油和5%高效氯氰菊酯乳油不同配比的复配剂的增效作用。