不同材料包膜尿素对油菜的缓释效应研究  

Research on the Slowly Efficiency-releasing of the Urea Coated by Different Material on Rape Growth

作　　者：王晓晶[1] 王艳[2] 

机构地区：[1]吕梁学院,山西吕梁033000 [2]山西财经大学,山西太原030001

出　　处：《安徽农业科学》2010年第33期18828-18829,共2页Journal of Anhui Agricultural Sciences

基　　金：山西省科技攻关项目(033005)

摘　　要：[目的]研究4种多年筛选的包膜肥料对油菜的生长及其缓释效应的影响,为新型包膜肥料的研制提供参考。[方法]以油菜为例,通过测定土壤中不同时期的速效氮、磷、钾含量及生物产量等,对包膜肥料进行评价。[结果]包膜肥料使土壤中的速效氮、磷、钾释放规律与油菜的生长规律相一致。碱解氮在中期大量释放,速效磷CRF-1效果最好,在后期含量仍很高。在整个作物生长期间,速效钾含量都较高。CRF-3和CRF-4与尿素相比,产量均有所提高,分别提高了2.4%和3.8%。[结论]包膜肥料能够提高肥料利用率,但包膜材料对土壤性质的影响,还需要做进一步的研究。[Objective] The reference for the development of new type of coated fertilizer was provided through several years’ research on the effect of four kinds of coated fertilizer on rape growth and its slowly releasing efficiency.[Method] The coated fertilizer affecting rape growth was evaluated based on the measurement of the available nitrogen,phosphorus,potassium and other biomass in soil in the different periods.[Results] The application of coated fertilizer promoted the releasing law of available nitrogen,phosphorus and potassium in soil being in consistent with the pattern of rape growth.A large number of nitrogen was released in the medium term and the efficiency of available P（CRF-1） was the best,which was still in high content in the late period.Throughout the rape growth period,the concentration of available K had been high.Compared with urea,the application of CRF-3 and CRF-4 could improve rape yield,which was increased by 2.4% and 3.8%.[Conclusion] The coated fertilizer could raise the fertilizer efficiency,but the coating material was with the effect on soil property,which needed to be further researched.

关 键 词：包膜肥料 肥料利用率 缓释效应 

分 类 号：S14[农业科学—肥料学]