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关于营养生理的研究,笔者访问的各大学和科研单位都有开展。其中以日本全国农业势同组合联合会农业技术中心的农药研究部最为全面。他们在土壤肥料的应用与应用基础研究上,由21位科技人员承担了36个研究项目,试验的作物主要有水稻、蔬菜(西红柿、土豆、黄瓜、茄子等)和盆栽柑桔。研究的内容:一是小区氮、磷、钾施用量和施用方式对比试验。每一小区为埋在土中的一个大的塑料盆,盆下有出水口排水。其优点不仅可以防止肥料的流失和小区间肥料的串流,而且占地少,小区重复多,
About nutrition and physiology research, the author visited the universities and research institutes have carried out. Among them, the Pesticide Research Department of the Agricultural Technology Center of the National Federation of Agricultural Potential in Japan is the most comprehensive. Twenty-one research projects were undertaken by 21 scientists and technologists on the application and application of soil fertilizers. The main crops tested were rice, vegetables (tomatoes, potatoes, cucumbers, eggplants, etc.) and potted citrus fruits. Research content: First, plot nitrogen, phosphorus and potassium application rates and application comparison test. Each plot is a large plastic basin buried in the earth, under the basin outlet outlet. Its advantages not only prevent the loss of fertilizers and the flow of fertilizer between the cells, but also occupy less land, plots and more,