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膨润土保氮增产效果研究
Study on the effect of bentenite improving soil fertilizer-conserving and increasing yields
【摘要】 通过油菜盆栽试验,研究了膨润土的保氮增产效果。膨润土用量在土重的0~5%范围内,随着用量增加,可明显减少氮素养分的淋溶损失,保氮能力增强,明显促进植株出苗和生长,提高作物产量。膨润土在砂质土壤上的最佳经济施用量为土壤重量的5%。
【Abstract】 Experiments with rape pot culture were carried out to investigate effects of bentenite improving soil fertilizer-conserving and increasing yields.The results suggested that with the use of bentenite addictive along 0～5%,the more addictive used,the more effect of improving soil fertilizer-conserving,the less of nireogen leaching.It could improve soil nutrient supply.It could also improve the growth of crops and increase the yeilds.The best economic usity of bentenite to sand soil was 5% of soil gravity.
【关键词】 膨润土；
保氮；
增产；
氮淋溶；
【Key words】 bentenite； nitrogen-conserving； ever-increasing yields； nitrogen loss；
【Key words】 bentenite； nitrogen-conserving； ever-increasing yields； nitrogen loss；
【基金】 北京市科技新星资助项目(9558102100);北京市自然科学基金资助项目(6022006)
- 【文献出处】 中国土壤与肥料 ,Soil and Fertilizer Sciences in China , 编辑部邮箱 ,2006年03期
- 【分类号】S141
- 【被引频次】35
- 【下载频次】229