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(一)肥料改良的目的:是要充分利用肥料來維持土地的生產能力,並且要進一步的提高土地的肥沃程度,增加產量。 (二)肥料改良是一椿綜合性的工作:和肥料改良在关係的知識不僅僅是肥料本身的知識,它密切地关係着土壤、水分、氣候以及農业生產上的一切知識,如談到有機質肥料和绿肥,就和微生物学發生不可分開的关係,增加肥料来源,就牵涉到化學工業,矿產地質蘊藏上去,人糞尿、土糞的收集和貯藏以及環境衛生又有關係了。並且農家的施用肥料不但是一
(A) The purpose of fertilizer improvement: It is necessary to make full use of fertilizers to maintain land productivity, and to further increase the fertility of the land and increase production. (B) fertilizer improvement is a comprehensive work: knowledge of the relationship with fertilizer improvement is not just the knowledge of fertilizer itself, it is closely related to soil, water, climate and all knowledge of agricultural production, as mentioned Organic fertilizers and green manure are inseparably linked with microbiology. Increasing the source of fertilizers involves the chemical industry. The geological deposits of minerals and the collection and storage of human excrement, soil manure and sanitation are all related. And farmer’s application of fertilizer is not only one