在古代,人们都公认在淹水下生长的水稻对杂草的竞争比旱稻要强,旱稻的草害问题更严重。选用淹水栽培可说是传统除草的第一步。第二步大概是稻苗的移植。在直播稻栽培中,水稻从出苗起就与杂草竞争,如稻田整地粗放,杂草将与新出现的水稻幼苗作激烈竞争,而栽插的秧苗则以极大的竞争优势超过移植后出现的杂 In ancient times, it is generally acknowledged that rice grown under flooding is more competitive with weeds than dry rice, and the problem of hay pests is even more serious. Use of flooding cultivation can be said that the first step in the traditional weeding. The second step is about rice seedlings transplantation. In direct seeding rice cultivation, rice is competing with weeds from emergence, such as extensive land preparation for paddy fields, weeds will compete fiercely with emerging rice seedlings, and transplanted seedlings will outweigh the competitive advantages over weeds Miscellaneous