LU Yang,LIU Shu-qing,WANG Xiang-feng,et al.Study on Fertilzer Effect of the Slow Release Nitrogenous Fertilizer on Radish in Dry Sand on the Bashang Plateau[J].Northern Horticulture,2013,37(14):177-180.
冀西北坝上旱地大白萝卜缓释氮肥效应研究
- Title:
- Study on Fertilzer Effect of the Slow Release Nitrogenous Fertilizer on Radish in Dry Sand on the Bashang Plateau
- 文章编号:
- 1001-0009（2013）14-0177-04
- 分类号:
- S 143.1+5
- 文献标志码:
- A
- 摘要:
- 以冀西北坝上旱薄沙土作物系统为研究对象，通过对萝卜产量、氮素利用率、硝酸盐含量及其经济效益的分析，研究了自制缓释氮肥在该区域的应用效果。结果表明：氮素利用率随着施氮量的增加而逐渐降低，但缓释氮肥的氮素利用率较等氮量下的普通尿素提高了4%~11%。与施用等氮量尿素处理相比，缓释氮肥明显提高了萝卜产量，其增产范围在1.98%~8.19%，净收入增幅在0.97%~7.69%。萝卜体内硝酸盐含量与施氮量呈极显著正相关。由此可见，在冀西北坝上旱薄沙地上，缓释氮肥在提高土壤氮素利用率、增加萝卜产量、降低萝卜体内硝酸盐累积和提高经济收益方面具有明显的促进效应。
- Abstract:
- Taking the northwest Bashang drought thin sandcrop system as object,the application effects of slow release fertilizer made by ourselves in northwest Bashang drought thin sand and crop system were studied through the analysis of the radish yield,nitrogen use efficiency,nitrate content and economic benefit.The results showed that nitrogen utilization rate gradually reduced with the increase of the amount of nitrogen while nitrogen utilization rate of slow release nitrogen fertilizer increased 4%~11% than ordinary urea.The slow release nitrogen fertilizer improved the radish production obviously,increasing by 1.98%~8.19% and net income increased by 0.97%~7.69% compared with the application of equal nitrogen in urea treatment.It had highly significant positive correlation between nitrate content of radish and the amount of nitrogen applied.In conclusion slow release fertilizer had evident promoting effects in improving nitrogen utilization rate in soils,increasing production,reducing nitrate accumulation in radish and economic improvement in northwest Bashang drought thin sands.
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备注/Memo
第一作者简介：卢杨（1988-），男，河北石家庄人，硕士研究生，研究方向为土壤与肥料科学。E-mail：heriluyang@yahoo.com.cn.责任作者：刘树庆（1956-），男，河北青县人，博士，教授，现主要从事土壤环境质量及环境质量评价与监控等研究工作。E-mail：liushuqing2002@163.com.
基金项目：国家科技支撑计划集成示范类资助项目（2013）。
收稿日期：2013-03-07