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汕优63现已成为鄂西低山地区杂交稻当家组合之一。作者利用1988年在潮沙泥田上设置的N、P、K肥料试验18个小区资料,进行了12个农艺性状与产量的相关分析和通径分析。其结果: 1.基本苗在9～13.9万/亩之间时,苗数与产量的相关程度很弱(r=0.1877),但最高苗数(18.4～35.4万/亩)、有效穗数(12.1～17.9万/亩)与产量达极显著正相关。穗粒数与产量相关极显著,但千粒重与产量呈微弱负相关。 2.在形态等间接因素上,株高(98.5～113.9厘米)、最后三片功能叶面积(1041～3116米~2/亩)与产量均达到高度正相关,r值分别为0.924和0.934。剑叶叶面积及功能叶叶绿素含量(6.64～56毫克/克干重)与产量的相关亦极显著。这说明汕优63前期保证较旺盛的生长势以达到一定的繁茂性,后期维持较强的光合能力,对促进高产有一定意义。
Shanyou 63 has now become one of the best hybrid rice combinations in western Hubei. Using 18 plots of N, P, and K fertilizers set on tidal sand fields in 1988, the authors analyzed the correlation and path analysis of 12 agronomic traits and yield. The results showed that: 1. The correlation between seedling number and yield was very weak (r = 0.1877) when the basic seedling was between 9 and 139,000 / mu, but the highest seedling number (18.4 ~ 354,000 / mu) 12.1 ~ 179,000 / mu) and the yield reached a very significant positive correlation. The number of grains per spike was significantly correlated with the yield, but the 1000-grain weight was weakly negatively correlated with the yield. In morphological and other indirect factors, the plant height (98.5 ~ 113.9 cm), the last three functional leaf area (1041 ~ 3116 m ~ 2 / mu) and yield were highly correlated, r values were 0.924 and 0.934. Leaf area and function of flag leaf chlorophyll content (6.64 ~ 56 mg / g dry weight) and the yield of the correlation is also significant. This shows that the early Shanyou 63 to ensure a more vigorous growth potential in order to achieve a certain degree of lush, the latter part of maintaining a strong ability to photosynthesis, to promote high-yield a certain significance.