【摘要】 文章对旱地玉米免耕覆盖对土壤中氮、磷、钾的影响进行了研究 ,指出免耕覆盖不仅可以改善土壤的通气性 ,而且可以促进土壤中矿质养分和有机质的分解 ,提高土壤的供肥能力 ,保证作物持续高产。更多还原

【Abstract】 This paper studies on the influence of upland maize plowless coverage system on the content of N,P and K in the soil, pointing out that plowless coverage can not only improve the ventilation of the soil, but also promote the decomposition of mineral nutrition and organic matters in the soil, which can increase the nutriment supplying ability of the soil and can guarantee continuing high yield of the crops.更多还原