旱地玉米免耕覆盖系统对土壤氮、磷、钾的影响  

On the Influence of Upland Maize Plowless Coverage System on the Content of N, P and K in the Soil

作　　者：张树梅[1] 籍增顺[1] 

机构地区：[1]山西省农科院农业资源综合考察研究所,太原030006

出　　处：《科技情报开发与经济》2000年第4期48-49,共2页Sci-Tech Information Development & Economy

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。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.

关 键 词：免耕覆盖 土壤养分 玉米 氮 磷 钾 土壤肥力 

分 类 号：S513.061[农业科学—作物学]