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人们知道,果树对肥料的要求,是与各地土质状况,树体发育状况以及肥料所含营养成份等主客观因素,有着直接关系。为了搞清辽宁省朝阳地区苹果树对各种肥料的吸收能力和一些无机肥料的肥效情况。我们于1990年7月就人们常见的几种无机
People know that the requirements of fruit trees on fertilizers are directly related to the subjective and objective factors such as soil conditions, the development of tree species and the nutrients contained in fertilizers. In order to find out the absorption capacity of various apple trees in Chaoyang area of Liaoning Province and the fertilizer efficiency of some inorganic fertilizers. We in July 1990 on the people of several common inorganic