高产水稻株系的抽穗前物质生产量、抽穗后物质生产量、生物产量以及经济系数均较高且变异系数相对较小。
Biomass production in the entire growth period, dry matter accumulated before and after heading stage, economic coefficient in high-yield rice were higher and their deviations were relatively narrow.
本文分析了水稻群体的个体质量分别与密度、产量和经济系数之间的数量关系；
This article analysis the quantitative relations between the single quality of a colony of rice plant and the density, output and economic coefficient.
随着土壤铬含量的增加，水稻生物产量显著下降，经济系数无明显变化。
Total biomass decreased significantly with increasing of soil Cr concentration, while economic coefficient showed no significant change.
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