不同水肥调控措施对马铃薯种植土壤养分运移的影响  

Effects of various water and fertilizer controlling measures on soil nutrient transport in different layers of potato soil

作　　者：陈康[1] 邓兰生[1] 涂攀峰[1] 许锐能[1] 叶倩倩[1] 

机构地区：[1]华南农业大学资源环境学院,广东广州510642

出　　处：《广东农业科学》2011年第20期51-54,共4页Guangdong Agricultural Sciences

基　　金：国家公益性行业(农业)科研专项经费(201103003);广东省科技计划项目(2010A020506022)

摘　　要：在田间试验条件下,研究了常规灌溉施肥和滴灌施肥两种水肥调控措施对马铃薯产量及土壤中碱解氮、有效磷、速效钾养分运移的影响。结果表明:灌溉施肥方式和土壤质地都会对土壤剖面养分运移产生影响;滴灌施肥技术的合理应用,有利于改善作物根系生长环境和养分供应,使土壤表层在较长时期内保持较高的养分含量水平;与常规灌溉施肥处理相比,合理应用滴灌施肥技术能显著增加马铃薯的块茎产量,提高商品薯率,其中块茎产量增幅达29.72%～36.42%。研究结果为不同水肥调控措施在马铃薯生产中的合理应用提供重要理论指导。Drip-fertigation and traditional irrigation and fertilization were compared for the effects on potato tuber yield and soil nutrient transport of NH4＋-N, available P, available K under field conditions. The results obtained were as follows： The different methods of irrigation and fertilization and soil texture could obviously effect the nutrient transport in the soil profiles. The root growing condition and nutrient supply of potato were improved by drip fertigation, which keep a higher nutrient contents in surface soil for a longer time with potato growing stages. Compared to the treatment of traditional irrigation and fertilization, the fertigation treatment significantly increased potato tuber yield and commodity rate, the tuber yield increased data as 29.72%-36.42%. These results lay a sound foundation for extension of drip-fertigation technique in potato production.

关 键 词：水肥调控 马铃薯 养分运移 

分 类 号：S532.062[农业科学—作物学]