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(二)处理因子对群体的作用水稻产量是由群体形成的,因此,群体质量倍受重视。群体由个体组成,不同质量的个体自然会组成不同的群体,但群体又不等于个体的简单相加。1.处理因子对群体的作用群体具有许多特征,但较为重要的特征性状包括组成群体的个体数量、群体叶面积、干物质积累量和粒叶比。调查分析结果表明,增施氮肥,可以增大最大叶面积指数和最高分蘖数,最终可以增加干物质积累数量;缩小插秧穴距,增
(B) the role of treatment factors on the group Rice production is formed by the group, therefore, the quality of the group much attention. Groups consist of individuals, and individuals of different qualities naturally form different groups, but groups are not equal to simple additions of individuals. 1. The role of processing factors on population The population has many characteristics, but the more important traits include the number of individuals that make up the population, leaf area of the population, dry matter accumulation and grain-leaf ratio. The results of investigation and analysis showed that increasing nitrogen fertilizer could increase the maximum leaf area index and the highest tiller number and finally increase the dry matter accumulation;