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采用土壤添加培养的方法测定了绿黄隆对玉米、水稻、大豆等作物的生物活性。结果表明 :绿黄隆在土壤中对玉米的致害阈限 ( IC1 0 )为 0 .1 7μg/ kg,对水稻的致害阈限则为 0 .4 3 4 9～ 0 .94 1 0μg/ kg,同时 ,绿黄隆的代谢产物之一的邻氯苯磺酰胺对玉米的生物活性要比绿黄隆的低得多 ,它对以玉米根系鲜重为指示指标的生物测定方法不会产生干扰 ,确定了以玉米根系鲜重为指示指标的生物测定方法 ,并以此得到了标准方程 ( P=4 .6653 +1 .0 2 3 5lg C,r=0 .9859* * ) ,用该方法检测了田间连续 2年使用绿黄隆后土壤中的残留量。检测结果表明 :第 1年使用 ,6个月后土壤中绿黄隆的残留量约为施药当日的 1 0 %左右 ;连续 2年使用 ,土壤中的残留量较上一年略有增加
The method of adding soil culture was used to determine the biological activity of chlorothalonil on corn, rice and soybean. The results showed that the killing threshold of luteolin in soils was 0.17μg / kg for maize and 0.43μg / kg for rice, and 0.94μg / kg at the same time, one of the chlorothalonite metabolites of o-chlorobenzenesulfonamide on corn biological activity than chlorflu49 is much lower, its corn root fresh weight as an indicator of bioassay will not produce Interference, determined to corn fresh weight as an indicator of bioassay method, and thus obtained the standard equation (P = 4. 6653 +1 .0 2 3 5lg C, r = 0. 9859 * *), with the The method was used to detect the residual amount in the soil after using the green Huanglong for 2 consecutive years. The results showed that the residual amount of chlor-flavonol in soil after applying for the first year was about 10% on the day of application, and the residual amount in the soil increased slightly for two years after being used for two consecutive years