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土壤养分含量水平是土壤肥力重要标志之一,它对蔬菜的产量形成有着十分重要的影响,研究土壤中N、P、K养分的有效含量与蔬菜产量的关系,拟定土壤养分的丰缺指际,将有助于对北京菜区土壤养分供应状况的了解和有助于菜田需肥量的科学估计,并指导合理施肥,提高化肥施用效益。
Soil nutrient content is one of the most important indicators of soil fertility. It has a very important influence on the yield of vegetables. The relationship between the effective contents of N, P and K nutrients and the yield of vegetables is studied, and the abundance of soil nutrients , Will help to understand the status of soil nutrient supply in Beijing vegetable area and contribute to the scientific estimation of required fertilizer amount in vegetable fields and will guide rational fertilization and improve the efficiency of fertilizer application.