植物营养与肥料学报2012，Vol.18Issue(3)：645-653,9.
不同水氮用量对日光温室黄瓜季土壤硝态氮淋失的影响
Effects of different water and nitrogen amounts on nitrate leaching in sunlight greenhouse during cucumber growing season
摘要
Abstract
The study was conducted to determine the effects of water and nitrogen amounts on nitrate leaching during cucumber growing season in a greenhouse in Xinji, Hebei province in 2010. The results indicate that the water-saving treatment which maintains soil moisture contents at 18.7%-22. 1% in the whole period can fully meet the demand of water for cucumber growth. The highest, value of soil nitrate nitrogen content is achieved in the water- saving and conventional nitrogen rate treatment, and the lowest value is achieved in the conventional water rate and nitrogen-saving treatment. The nitrate nitrogen leaching amount in the depth of 95 cm is closely related to soil moisture and nitrate nitrogen contents during cucumber growing season, especially of the primary fruit stage and full fruit stage. Comprehensive analysis shows that the optimal treatment is WEN2 with 30% reduction in water and 25%reduction in nitrogen compared with the conventional treatment, and the nitrate nitrogen leaching amount is reduced by 35.0% in the whole period. In this study, the yields between the water-saving and nitrogen-saving treatment and the conventional treatment are not significantly different. There are water-saving and nitrogen-saving approaches compared to the conventional treatment of farmers. According to fertilizer demand and soil moisture in different periods, we can gain obvious water-saving and nitrogen-saving effect through the control of water and nitrogen.关键词
温室/黄瓜/水/氮/硝态氮淋失Key words
greenhouse/cucumber/water/nitrogen/nitrate leaching分类
农业科技引用本文复制引用
闫鹏,武雪萍,华珞,武其甫,李银坤,吴会军,王小彬,蔡典雄,张彦右,李若楠,王丽英..不同水氮用量对日光温室黄瓜季土壤硝态氮淋失的影响[J].植物营养与肥料学报,2012,18(3):645-653,9.基金项目
国家重点基础研究发展计划（973计划） （）
公益性行业（农业）科研专项 （）
国家“863”计划项目（2011AA100505）资助. （）
