---

作 者 ：叶全宝;张洪程;夏科;魏海燕;汪本福;张瑛;霍中洋;戴其根;许轲

期 刊 ：作物学报 2005年 31卷 08期 页码：1021-1028

关键词：水稻；粒重；氮素；基因型差异；类型；

Keywords:Rice, Grain weight, Nitrogen, Genotypic difference, Type,

摘 要 ：以国内外114个水稻基因型的大田试验，研究了0、低、中、高4种氮素水平条件下粒重的变化规律，探讨了水稻粒重对氮素反应的基因型差异及其类型。结果表明：(1)早、中、晚稻在4种氮素水平下粒重均存在极显著的基因型差异。在不施氮条件下，早、中、晚稻平均粒重分别为23.95 g、25.34 g和25.37 g，基因型间的变异系数分别为5.57

Abstract:Grain weight is one of the important factors for yield. In high-yield cultivation, grain weight has become the principal focus for enhancing grain yield. However, limited by test conditions and materials, whether there are differences in grain weight is controversial up to now. The change of grain w

---