除草剂解毒剂对玉米绿磺隆残留药害的解毒效果初报

采用室内盆栽和小区试验等生物测定方法，通过对玉米株高、株鲜重、单株产量、果实中支链氨基酸等指标的测定，研究了除草剂解毒剂3-二氯乙酰基-2，5-二甲基-2-乙基-1，3-噁唑烷减轻除草剂绿磺隆对玉米等后茬敏感作物伤害的生物活性。实验结果表明：上一年使用过绿磺隆的地块，下一年播种玉米时，可以通过3-二氯乙酰基-2，5-二甲基-2-乙基-1，3-噁唑烷的浸种、拌种、混喷、叶喷来减轻药害，其中混喷方法效果最好，为对照的99.41%，浸种方法仅次于混喷，为对照的95.65%。应用除草剂解毒剂使绿磺隆的残留量小于5μg/kg时，后茬可以种植玉米。

Preliminary Report on the Effect of the Antidote of the Herbicide Antidote for Reducing Residual Injury of Chlorsulfuron on Corn

The biological activity of the herbicide antidote 3- dichloracetyl - 2,5- dimethyl - 2- ethyl - 1,3- oxazolidine was researched to reduce injury of herbicide Chlorsulfuron to stubble sensitivity crops of the maize,etc. The physiological indexes of maize main plant height, fresh weight, yield, branch amino acid content in maize seedling, etc were measured with the bioassay methods in laboratory potted plant and plot test. The result indicated that the plot has used by chlorsulfuron last year, When maize will be seeded next year, the injure may be reduced by soaking seed, blending seed, mixed spraying and spraying leaf, etc. with 3- dichloracetyl - 2,5- dimethyl - 2- ethyl - 1,3- oxazolidine. The effect of mixed spraying is best among them, its yield increased 99.41% than that of CK, and the method of soaking seed is next to mixed spraying, for 95.65% of the comparison. The corn may be planted after using chlorsulfuron in soil when the residual quantity of chlorsulfuron less than 5μg/kg by using herbicide antidote.