摘要
水稻强化栽培条件下,稻田杂草以节节菜、陌上菜、异型莎草和千金子为主,其中与水稻有较强竞争力的为异型莎草和千金子。两优培九与杂草的竞争力较E52强。相同密度下,随行距扩大,水稻对杂草的抑制能力下降。当稀植时,与杂草竞争能力较差的E52对杂草抑制在不同行距间没有差异。就水稻强化栽培条件下杂草防治方法进行了讨论。
Main weeds species under intensified rice system were Rotala indica, Lindernia procumbens, Cyperus difformis and Leptochloa chinensis, of which Cyperus di fforrnis and Leptochloa chinensis had stronger competition with rice plant. Compared with Japanic hybrid rice E52, Liangyoupeijiu can control weed growth greatly due to their stronger competitive ability. With the increase of row spacing, the control ability of rice over weeds decreased under the same planting density. When E52 was sparsely planted, there was no difference of control over weeds among different row spacing. Weed control method was discussed under intensified rice system.
出处
《生态学杂志》
CAS
CSCD
北大核心
2005年第9期1004-1006,共3页
Chinese Journal of Ecology
基金
国家农业结构调整重大研究专项项目(2003-01-02A)
国家农业科技跨越计划资助项目(2003-1)
关键词
水稻强化栽培
杂交稻
杂草
竞争能力
system of rice intensification, hybrid rice, weeds, competitive ability
