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.
出处
《江西农业学报》
CAS
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)
