选用N, N -二甲基乙酰胺作为反应溶剂后缩短反应时间的同时，得到的盖草能收率高，光学纯度好。
The n, N-dimethyl acetamide is used as the reaction solvent, therefore, the reaction time is shortened, and simultaneously, the obtained Gallant-Super has high yield rate and good optical purity.
覆膜处理虽在产量和水分利用效率上略高于盖草处理，但差异不显著，且覆膜处理存在成本高，污染土壤等缺陷。
There was no significant difference of rice grain yields between the treatments of straw mulching and plastic film covering but the cost and soil pollution in the latter should be concerned.
对有代表性的氯氰菊酯、 氯氟氰菊酯、 精禾草克、精盖草能等手性农药及其中间体对映体的色谱分离方法进行了总结。
The chromatographic separation methods of the chiral pesticides and their intermediates, such as cypermethrin, cyfluthrin, quezalofop-p-ethyl, haloxyfop-p-methyl were summarized in this article.
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