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根据作物性状和环境之间存在相关性这一事实,提出偏产量势理论,即y(作物实际产量)=y(最大产量)×A(总产量势值+C(校正值).其中A由w(水分)、n(养分)、a(气)、t(温度)、l(光照)组成,并服从乘法法则关系.本文以上海青紫泥早稻为例,根据多年试验结果所确定的诸因子偏产量势值,编制了土壤肥力表,并以此来指导施肥和预测早稻产量.
According to the fact that there is a correlation between crop traits and environment, the theory of partial yield potential is proposed, that is, y (actual crop yield) = y (maximum yield) × A (total yield potential + C (correction value) (moisture), n (nutrient), a (gas), t (temperature), l (light), and obey the law of multiplication law.In this paper, Shanghai purple early purple rice as an example, based on years of test results identified by various factors Partial potential potential value, the preparation of the soil fertility table, and in order to guide fertilization and forecast early rice production.