The function of binary quadric fertilizer effect has been extensively used in China to determine the optimum economy fertilizing quantity.
针对目前国内利用二元二次肥料效应函数确定最佳经济施肥量的数学方法存在的问题。
In this paper, the production, properties and application effect of multi - function compound fertilizer are introduced.
介绍了一种多功能复合肥的生产工艺、性能及其施用效果。
As well as studies on methods to establish of the regional fertilizer effect function.
并对区域施肥函数的建立方法进行了研究。
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