2012•Guangdong nongye kexueOpen access
Effects of straw-returning on growth and yield of rice cultivated by different modes.
HU Mao-hui, Haiqing Zhang
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Abstract
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(T1) and rape-double cropping rice mode(T2).The results showed that: among the three cultivation modes,T1 had the best straw-returning effect.Comparing with CK,treatment T1 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.