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关于磷肥的肥效问题,各地广大农民都有产生效果和不产生效果的反映。从全国各地的试验研究资料来看,多偏重于不同土壤类型和磷肥效果关系的研究。根据我们在山东淄博地区调查的情况,即在同一土壤类型条件下,磷肥也有产生效果和不产生效果的情况。有的两个村庄相距不到一里路,对磷肥就存在有效和无效两种反映,甚至在同一个村庄的不同生产队也有不同的反映。调查研究和分析的结果,认为在同一土壤类型条件下,磷肥产生效果与否和有机肥料施用的质和量、有机肥料施用的历史以及相应地与土壤肥力的影响有着极大关系。为此,我们特在山东淄博市北部山麓冲积平原的黄粘壤土上,于1961—1962年分别在不同的田块上,配合不同的有机肥料条件,进行了试验研究。今将试验研究的结果介绍如下。
On the issue of fertilizer efficiency, farmers across the region have produced effects and do not produce the effect of reflection. Pilot studies from all over the country point of view, more emphasis on different soil types and the relationship between the effect of phosphate fertilizer. According to our investigation in Zibo, Shandong Province, that is, under the same soil type conditions, phosphate fertilizer also has an effect and no effect. Some villages are less than a mile away from each other, and there are two types of effective and invalid responses to phosphate fertilizer, and even different production teams in the same village have different reactions. According to the results of investigation and analysis, it is considered that the effect of phosphate fertilizer production and the quality and quantity of organic fertilizer application, the application history of organic fertilizer and the corresponding influence of soil fertility are greatly influenced by the same soil type conditions. To this end, we especially in the northern foothills of Zibo City, Shandong alluvial plain yellow clay soil, in 1961-1962, respectively, in different fields, with different organic fertilizer conditions, conducted a pilot study. The results of this pilot study are described below.