2024年3月29日 星期五
长效肥料ENTEC对野生刺苋驯化栽培的影响
Effects of long-acting fertilizer ENTEC on the culture of Amaranthus spinosus L.
2004年 第13卷 第2期 页码[10-13]    下载全文[0.6MB]  
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(Amaranthus spinosus L.)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。

Abstract

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 higher41.56% than urea. Otherwise, ENTEC can promote the absorption to P and K of A. spinosus.

关键词剌苋; 长效肥料; 硝化抑制剂; 生长效应; 氮素利用;
Key wordsAmaranthus spinosus L.; long-actingfertilizer; nitrification inhibitor; growth; nitrogen utilization
作者李蕾,符小琴,韦带莲,杨超
所在单位海南师范学院生物系,海南海口571158
点击量1045
下载次数703
基金项目海南省自然科学基金资助项目(39909);