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农田土壤的养分消长和循环平衡,是农田生态系统物质循环的一个重要方面,也是决定土壤肥力的一个重要因素,近年来国内外在这方面开展了许多研究工作。为了探讨不同耕作制度与土壤养分消长及循
Nutrient depletion and circulation balance of farmland soil is an important aspect of farmland ecosystem material cycle and also an important factor in determining soil fertility. In recent years, many research works have been carried out in this field at home and abroad. In order to explore the different tillage systems and soil nutrient growth and follow