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本文讨论的是电子计算机对三元最佳施肥方案的求算方法.目前,虽有不少肥料科学工作者做了大量工作,但由于影响肥效反应的因素甚多,获得较完整的生物自然参数还很困难,尤其是多种养分的共同作用,使产量效应复杂化,除了各种养分对产量的主效应外,还可能出现养分之间的正、负交互效应;计算也往往因遇到效应函数中某些养分不符合报酬递减律而难以进行.因此,这方面的工作目前还处于探索阶段.我们针对上述问题做了一部分工作,编写了对氮、磷、钾三种肥料的施肥效应函数的回归方程、农作物获最高产量及最大经济效益所需的施肥量程序,较好地解决了在某些养分不符合报酬递减律情况下的计算问题.由于这类计算牵涉到一些较复杂的数学方法,需另立专题讨论,本文仅介绍施肥效应函数符
This article discusses the computational method of computer to optimize the ternary fertilization scheme.At present, although a lot of fertilizers scientists do a lot of work, but due to many factors that affect the response to fertilizer, to obtain a more complete bio-natural parameters Is still very difficult, especially the interaction of multiple nutrients, so that the yield effect of the complex, in addition to a variety of nutrients on the yield of the main effect, there may be positive and negative nutrients between the interaction; calculation is often encountered Therefore, the work in this area is still at the exploratory stage.We made a part of the work on the above issues, and wrote the fertilization effect on three kinds of nitrogen, phosphorus and potassium fertilizers Function regression equation, the highest yield of crops and the maximum economic benefits of fertilization amount of the program, a better solution to some of the nutrients does not meet the law of diminishing returns in the calculation of the case.Since such calculations involve some of the more complex Mathematical methods, subject to separate thematic discussion, this article describes only fertilizer effect function symbol