In order to clarify the herbicides that are safe to common beans and have good control effect on common pre-emergence weeds,17 herbicides were screened by indoor pot experiment and field experiment.The results of pot experiment showed that pendimethalin,prometryn and S-metolachlor had good safety to common beans at seedling stage.The field experiment showed that 45%S-metolachlor microcapsule suspension 2 025-3 225 g·hm-2 had good control effect on weeds in the vegetable field 30 days after application.The total number of plants that had control effect was 77.52%-78.58%,and the fresh weight prevention effect was 88.21%-88.92%.It had good safety to common beans,and the yield of common beans increased by 11.61%-20.51%.It shows that 45%S-metolachlor CS can be used as a herbicide for pre-emergence weeds after common bean sowing,and has a good application prospect.
国家科技期刊平台
NSTL
万方数据
