Dry matter yield and nitrogen yield were measured at September in 2004, Juneand August in 2005. Relative yield (RY), relative density (RD) and relative yield total(RYT) were calculated to determine the interspecific relationship and resourceutilization.
在2004年9月初和2005年6月和8月中旬刈割收获,测定草地干物质产量和氮产量,以相对产量(RY)、相对密度(RD)和相对产量总值(RYT)研究种间竞争。
参考来源 - 半干旱地区禾—豆混播草地生产力及种间关系研究·2,447,543篇论文数据，部分数据来源于NoteExpress
PBC与玉米子粒和总干物质相对产量之间达极显著相关、与土壤速效钾之间达显著相关。
PBC were very significantly correlated (p-0.01) with the relative grain yield and relative total dry matter yield of corn, and significantly correlated with soil available K.
相对而言，每次积累产量增长了一倍，价格便同时减低了20%。
For every doubling in cumulative production volume, the cost of modules has declined by about 20%.
拉美的预演结果相对不错：主要作物产量只会降低几个百分点。
Latin America comes out of the exercise relatively well: the yields of its main crops are expected to fall by only a few percent.
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