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本研究于1981年晚季和1982年早季分别测定了14个和16个水稻品种在7个主要发育时期地上部各器官的干物重。结果表明:1.早稻的生物产量和籽粒产量与品种的生育期呈极显著正相关,但以中迟热品种最高;晚稻的生物产量和籽粒产量与品种的生育期的相关不显著。2.早稻和晚稻品种的生物产量与籽粒产量都呈极显著正相关。3.我国育成的早稻和晚稻,品种齐穗期至黄熟期的相对生长率与该时期地上部主要营养器官干物重损失百分率都呈显著负相关。4.我国育成的早稻和晚稻品种的收获指数与株高均呈极显著负相关。
In this study, the dry matter weights of 14 and 16 rice cultivars in each of the above-ground parts were measured in the late 1981 and early 1982 seasons. The results showed that: 1. There was a significant positive correlation between the biological yield and the grain yield of early rice and the growth period of the cultivars, but the highest yield of the latter was late. The correlation between the yield and grain yield of late rice and the growth period was not significant. The bio-yield of early and late rice varieties had extremely significant positive correlation with grain yield. The relative growth rates of heading and yellow paddy cultivars in China were significantly and negatively correlated with the percentages of dry matter weight loss of above-ground vegetative organs in this period. Harvest index of early and late rice varieties bred in China was significantly and negatively correlated with plant height.