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作 者 ：赵定国

期 刊 ：植物营养与肥料学报 1996年 2卷 4期 页码：362-366

关键词：增产率；配肥率；适宜施肥量；二元肥效方程；

摘 要 ：在常用的二元二次和二元平方根效应方程中,存在R=2ω-ω^{2 0.5}-ω关系。R为增产率,表示增产量占最高增产量的分值;ω为增产配肥率,表示施肥量占最高产量时施肥量的百分值。按这二个关系式计算出的推荐施肥量,可以比通常直接应用二元肥效方程计算的推荐施肥量减少20％以上。这个新概念及其应用,对于提高肥料利用率和降低肥料对环境的污染有重大意义和实用价值。

Abstract:The constant equal relation R=2ω-ω²/100 and R=20ω^0.5-ω were discovered in the commonly used duality function of the fertilizer effect. In above mentioned constant equal formula R is production incresing rate which represents the percentage of increased production and maximum increased production, ω is the proper fertlizer ratio which represents the percentage of fertilizer application amount for maximum increased production. According 1o above mentioned constant equal relation, the introduced fertilizer application amount could be reduced 20% compared with the introduced fertilizer application amount calculated directly with the duality (unction on the fertilizer effect. The application of this new concept is vrey important for increasing the fertlizer application effect and reducing the pollution caused by fertilizer to the environment.

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