摘要
为探讨大穗型水稻品种高产机制，对其产量形成的特点进行了分析．结果表明：超高产水稻二次枝梗结实率有较大的提高；其前期物质积累多，后期转运能力强，光合产物能更多地运送到稻穗中；齐穗期具有更高的叶面积指数，后期叶面积指数衰减慢，叶片功能期长，叶日积高．
The yield formation characteristics of big panicle rice with superhigh yield were analysed. The results showed that the big panicle rice of superhigh yield had greatly increased in seedsetting percentage of secondary branches of panicle,it had accumulated more dry matter at early growth period and transfered more photosynthetaes to panicle at late growth period.The rice of superhigh yield had higher LAI at headingstage,and its LAI declined more slowly at late period,it had longer leaf available period and higher Leafdayintergration (LAI×Growth days).
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
1998年第1期1-7,共7页
Journal of Hunan Agricultural University(Natural Sciences)
关键词
水稻
超高产
产量
枝梗结实率
paddy
superhigh yield
yield
branches
analysis
