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近年来杂交稻直播越来越受到农民的欢迎,因为杂交稻采用直播更能发挥其生长优势。直播稻的成败关键在于除草,大面积直播要获得丰收,必然要积极推广化学药剂除草。早造播种时,一般气温较低,杂草和秧苗同时生长或有些杂草生长比秧苗迟,所以使用除草剂应以播种前对土壤进行处理较好。一般应选择药效期较长、较安全、具有选择性的除草剂。目前比较好的有12%和25%恶草灵(法国产)、60%去草胺,其次是25%除草醚等。根
In recent years, the direct broadcast of hybrid rice is more and more welcomed by peasants, because the hybrid rice is more able to exert its growth advantages by using live broadcast. The key to the success or failure of direct-seeding rice lies in weeding. To achieve good harvest in large-area direct seeding, we must actively promote the weeding of chemical agents. Early planting, the general temperature is low, weeds and seedlings grow at the same time or some weeds grow later than the seedlings, so the use of herbicides should be sown before soil treatment is better. Generally should choose longer duration, safer, selective herbicides. Currently there are 12% and 25% of the evil spirits (France), 60% to herbicides, followed by 25% of weed ethers. root