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.
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。
At same time, the leaf area coefficient, dry matter accumulation and economic coefficient of compact type corn variety is bigger than loosely type corn variety.
在最高产量时，紧凑型玉米品种与松散型玉米品种相比具有叶面积系数大，干物质积累数量大，经济系数高等特点。
Accurate understanding and calculating the total fracturing fluid leak-off coefficient is both key problem to the fracturing design and the important matter to the analysis after fracturing.
准确认识和计算压裂液综合滤失系数，既是压裂施工设计中的一个关键问题，也是压后分析评估的一个核心内容。
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