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应用丁草胺和丙草胺对采自丹东、泰州、肇庆的3种杂草稻进行盆栽药效试验。丁草胺和丙草胺在播种0d施药及播种0d和播后10d分2次施药均能有效防除3种杂草稻,其中药后35、45d株防效分别为74.7%～100%、73.1%～100%,药后45d鲜重防效分别为86.2%～100%、67.4%～100%。对辽星1号的安全性试验表明丁草胺和丙草胺不同质量浓度及不同时期施药对水稻移栽苗的根长、分蘖数和叶数均安全。
The effects of butachlor and pretilachlor on the potting efficacy of three weedy rice collected from Dandong, Taizhou and Zhaoqing were studied. Butachlor and pretilachlor could control 3 kinds of weedy rice effectively at 0d sowing time and 0d sowing time and 10d sowing time, respectively. The control effects of butachlor and pretilachlor were 74.7% ~ 100% , 73.1% ~ 100%, 45d fresh weight control effect were 86.2% ~ 100%, 67.4% ~ 100% respectively. The safety test of Liaoxing 1 showed that the application of different concentrations of butachlor and pretilachlor in different periods of time had the best effect on the root length, tiller number and leaf number of transplanted rice seedlings.