落谷稀培育壮秧为水稻增产的重要技术措施。但由于稀播秧田常易发生较多的杂草,夺取秧田肥料,影响秧苗的壮健,甚至随着秧苗移植到本田,还影响到稻谷的产量和品质。而目前秧田除草的方法是出苗后用手工拔草,这种除草方法在播种较稀、杂草较多的情况下往往需要进行2～3次,还不能做到彻底清除。此外,手工拔草必须在杂草长出之后才能进行,这就不免使秧苗或多或少地遭受杂草的影响。因此,在进一步推行稀播育秧的同时,对于如何防除秧田杂草问题实有探讨的必要。 Thickening thinning seedling cultivation of rice as an important technical measure. However, due to the thin seedling often prone to more weeds, seize the fertilizer seedlings, seedlings affect the health, even with the seedlings transplanted to Honda, but also affect the yield and quality of rice. At present, the method of seedling weeding is to pull the grass by hand after emergence. This weeding method often needs to be carried out for 2 or 3 times when it is sown thinly and more weeds, and it can not be completely eliminated yet. In addition, manual weeding must be carried out after the weeds grow, which inevitably make the seedlings more or less affected by weeds. Therefore, in the further implementation of thinning seedling breeding at the same time, for how to control the problem of weed seedling it is necessary to explore.