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随着植物营养科学研究的深入发展,施肥实践的科学总结,植物营养与施肥的基本规律被逐步揭示出来,主要包括“养分归还学说”、“最小养分律”、“报酬递减律”、“最适因子律”等。一、养分归还学说该学说在19世纪由德国杰出的化学家李比希提出。他认为“由于人类在土地上种植作物并把这些产物拿走,这就必然会使地力(土壤肥力)逐渐下降,从而土壤所含的养分将会愈来愈少。因此,要恢复地力就必须归还从土壤中拿走的全部东西,不然就难以指
With the further development of plant nutrition scientific research, the scientific summary of fertilization practices, the basic rules of plant nutrition and fertilization are gradually revealed, including ”return to nutrition theory“, ”minimum nutrient law“, ”diminishing returns Law “, ” most suitable factor law “and so on. First, the theory of nutrient return The doctrine in the 19th century by the outstanding German chemist Li Bixi proposed. He believes that ”as human beings grow crops on the land and take them away, it will inevitably reduce the soil fertility (soil fertility), so that the soil will contain less and less nutrients. Therefore, to restore fertility Everything that has to be taken from the soil must be returned, otherwise it is hard to point it