Abstract:

In order to screen the best herbicide, comparative study of weed control effect and growth were conducted with Acetochlor, Metolachlor, etc. 4 herbicides as material. The results showed that there was the best weed control effect between Acetochlor and its group treatment with MCPA, Clethodim, their plant control effect was over an average of 85.17% and fresh weight control effect of 79.73%, but the group teratment had significant injury, their emergence rate was only 50.00%, and stem yield reducted more than 43.70%. Therefore, the group teratment was not recommended for use in production; Metolachlor and its group treatment with MCPA, Clethodim had good weed control efficacy, their plant control effect was over an average of 75.04% and fresh weight control effect of 66.39%, and which could promote seed germination, improve the germination rate and enhance stem yield, an increase of 25.93% over. The weed control effect of the group treatment between Metolachlor and MCPA was better performance, which could be widely applied in the field production.