不同种植模式下秸秆还田对水稻生长发育和产量的影响

摘要

以冬闲-双季稻种植模式为对照(CK),研究了在紫云英-双季稻(T1)和油菜-双季稻(T2)种植模式下秸秆还田对水稻生长发育和产量的影响.研究结果表明:在3种不同种植模式条件下,以T1处理下秸秆还田的效果最好；与CK相比,T1处理可以显著地促进水稻分蘖,提高水稻植株的叶面积指数、干物质积累量和茎鞘转运率,增加有效稳数、每穗粒数、早稻的结实率以及晚稻的产量.%Taking the cultivation mode of winter fallow - double cropping rice ( CK) as the check, this paper studied the effects of straw - returning on the growth and grain yield of rice cultivated by Astragalus sinicus - double cropping rice mode ( Tj ) and rape -double cropping rice mode (T2). Trie results showed that: among the three cultivation modes, T, had the best straw - returning effect. Comparing with CK, treatment Tj could observably promote tillering, increase the leaf area index, dry matter accumulation and stem - sheath transfer ratio of rice plants, and enhance the effective spikes, grains per spike, early - rice' s seed setting rate and late - rice' s yield.