偏产量势论土壤肥力定义

THE DEFINITION OF SOIL FERTILITY FOR THE THEORY OF PARTIAL YIELD POTENTIAL

偏产量势论是阐明作物性状和环境相关的内部规律的理论。可用数学模式 y=A·Y+C(实际产量=总产量势·最高产量+校正值)表达。式中 A=w·n·a·t·l,(总产量势是水分、养份、空气、温度、光照五个偏产量势的乘积)。设 t 和 l 的偏产量势值为1时,总产量势(A)就等于土壤肥力势(A_f),A_f=w·u·a。应用偏产量势理论可以较全面地分析和处理农业生产和科研工作的各种问题。结合测土施肥技术,建立土壤肥力表是研究作物施肥问题的必要步骤。

The theory of the partial yield potential explains the internal law of relation between crop yield and evironments.It is expressed by the following equation:y= A·Y+C(A=w·n·a·t·l).The definition of soil fertility for the theory of partial yield potential comes from the essential equation.The formulation is:A_f=w·n·a, The theory of partial yield potential is used in agricultural practice or scientific research.The scientists will be able to analyze and deal with the problems correctly.The technique of measuring the soil for applying fertilizer can be combined with the work of making a list of soil fertility.It is a necessity in applying fertilizer of crops for the combination.