摘要
探讨了含有硝化抑制剂DMPP(3,4 二甲基吡唑磷酸盐)的长效肥料ENTEC对剌苋(AmaranthusspinosusL.)干物质积累及其氮素利用的影响。结果表明:与尿素处理相比,ENTEC对提高剌苋干物质积累作用不明显,其最大生长速率出现时间较晚;施用ENTEC,土壤含氮量较高,且下降速度较慢,说明其具有较强的防止氮素流失的作用。同时,ENTEC有利于提高氮素的利用率,ENTEC处理的植株氮素利用率比尿素处理提高了41.56%。另外,ENTEC能促进剌苋对磷、钾素的吸收。
Effects of a long-acting fertilizer ENTEC that contains 3,4-dimethylpyrazole phosphate (DMPP, a new nitrification inhibitor) on the growth and nitrogen utilization of Amaranthus spinosus L. were studied. The results show that ENTEC plays lesser role on the dry-matter accumulation than urea. The time of maximum growth rate of A. spinosus treated with ENTEC appears later than urea and CK. The N content of soil treated with ENTEC is high, and its decreased rate is slow. ENTEC can enhance the N recovery, the nitrogen utilization of A. spinosus fertilized with ENTEC is higher 41.56% than urea. Otherwise, ENTEC can promote the absorption to P and K of A. spinosus.
出处
《植物资源与环境学报》
CAS
CSCD
2004年第2期10-13,共4页
Journal of Plant Resources and Environment
基金
海南省自然科学基金资助项目(39909)
关键词
长效肥料
刺苋
驯化
氮素
利用率
野生蔬菜
Amaranthus spinosus L.
long-acting fertilizer
nitrification inhibitor
growth
nitrogen utilization
