QU Ji-song,ZHANG Li-juan,FENG Hai-ping,et al.Effect of Water Saving and Nitrogen Controlling on Nitrogen Temporal and Spatial Distribution in Greenhouse Vegetable Fields of Upstream Area of the Yellow River[J].Northern Horticulture,2012,36(04):37-40.
节水控氮对黄河上游地区设施菜田氮素时空分布的影响
- Title:
- Effect of Water Saving and Nitrogen Controlling on Nitrogen Temporal and Spatial Distribution in Greenhouse Vegetable Fields of Upstream Area of the Yellow River
- 文章编号:
- 1001-0009(2012)04-0037-04
- Keywords:
- the upper stream of the Yellow River; solar greenhouse; water saving and nitrogen controlling; nitrogen migration; temporal and spatial distribution
- 分类号:
- S 158.2
- 文献标志码:
- A
- 摘要:
- 为了探索黄河上游地区日光温室节水控氮对氮肥利用效率及氮素运移规律的影响,以不同施氮量和灌水量为试验处理,采用随机区组处理方式,通过在西芹不同生长阶段、0~160 cm土壤剖面获取土壤氮素的动态变化信息,以评价日光温室栽培条件下土壤氮素运移规律和硝态氮的淋溶情况。试验表明:在耕层土壤(0~60 cm)内全氮质量分数变化较大且规律明显;硝态氮质量分数变化在整个生长周期内呈规律性明显变化,且土壤中硝态氮质量分数变化与灌水量呈负相关关系,与施氮质量分数呈正相关关系,节水控氮能够有效减轻土壤中上层中(0~60 cm)硝态氮淋洗,降低土壤硝态氮积累量,有效减轻对农田周围水体污染。
- Abstract:
- In order to explore effect of water saving and nitrogen controlling on nitrogen use efficiency and nitrogen transport law,adopting randomized block designs,to obtain dynamic change information on soil nitrogen to evaluate soil nitrogen transport law and nitrate leaching in different growth stages of celery,in 0~160 cm soil profiles in greenhouse in the upper reaches of the Yellow River.The results showed that at the same nitrogen application rate,soil total nitrogen gradually increased (treatment 1<treatment 2<treatment 5) in 0~20 cm and soil total nitrogen gradually decreased (treatment 1>treatment 2>treatment 5) in 20~40 cm and in 40~60 cm,with the decrease of irrigation quota,total nitrogen mass fraction,and the law was changed greatly in the topsoil (0~60 cm);NO3-N changed regularly,which was a negative correlation with irrigation quantity,which was a positive correlation with nitrogen application rate during growing periodicity
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备注/Memo
第一作者简介:曲继松(1980-),男,吉林永吉人,硕士,助理研究员,现主要从事设施环境调控和蔬菜栽培生理研究工作。E-mail:qujs19@126.com。
责任作者:郭文忠(1970-),男,宁夏中卫人,博士,研究员,现主要从事设施蔬菜栽培生理和设施园艺工程技术研究工作。E-mail:guowzh70@163.com。
基金项目:国家重大专项资助项目(2009ZX07212-004-2);宁夏回族自治区科技攻关资助项目(KGZ-170706);国家科技支撑计划资助项目(2007BAD57B01)。
收稿日期:2011-12-05