氮磷钾肥对紫云英产量、养分累积及种植后土壤养分的影响  

Effects of N,P,K Fertilizer on Yield,Nutrition Accumulation of Milk Vetch and Soil Nutrition after Planting Milk Vetch

作　　者：李昱[1] 何春梅[1] 杨仁仙 张辉[1] 李清华[1] 王飞[1] 刘志华 林新坚[1] 

机构地区：[1]福建省农业科学院土壤肥料研究所,福建福州350013 [2]福建省浦城县农业局土肥站,福建浦城353400

出　　处：《江西农业学报》2010年第11期112-114,共3页Acta Agriculturae Jiangxi

基　　金：公益性行业(农业)科研专项"绿肥作物生产与利用技术集成研究及示范"(200803029)

摘　　要：通过田间试验,研究了不同配比的NPK肥对紫云英生长、产量、养分累积及土壤养分的影响。研究结果表明:种植紫云英后土壤速效钾、碱解氮、有机质、pH值提高,土壤有效磷下降。施用P2O5在54 kg/hm2内时,紫云英产量随着施磷的增加而增加,并且在早春适当施少量的氮肥(施尿素30 kg/hm2),可以提高紫云英产量。施钾对紫云英产量影响不大,原因有待于进一步研究。The effects of different application rates of nitrogen(N),phosphors(P) and potassium(K) fertilizer on the growth,yield,nutrition accumulation of milk vetch and soil nutrition after planting milk vetch were studied through field tests.The results showed that planting milk vetch could increase the soil available potassium,alkali-hydrolyzable nitrogen,organic matter content and pH-value,and decrease the available phosphorus content in the soil.When the application rate of P2O5 was below 54 kg/hm2,the yield of milk vetch increased along with the increase of application rate of phosphorus fertilizer,and applying 30 kg/hm2 urea in early spring could increase the yield of milk vetch.Applying potassium fertilizer had little effect on the yield of milk vetch.

关 键 词：氮磷钾肥 紫云英生长 产量影响 养分累积 种植 土壤养分 Yield 土壤有效磷 土壤速效钾 田间试验 不同配比 有机质 碱解氮 NPK肥 早春 施用 尿素 结果 氮肥 

分 类 号：S[农业科学]