中国资源综合利用2025，Vol.43Issue(3)：19-23,5.DOI:10.3969/j.issn.1008-9500.2025.03.005
农业水资源节约利用模式对上海市菜地水氮的削减效应研究
Research on the Reduction Effect of Agricultural Water Resource Conservation and Utilization Models on Water and Nitrogen in Vegetable Fields in Shanghai
纪文俊 1居艳阳2
作者信息
- 1. 上海市松江区河湖管理中心,上海 201620
- 2. 上海市水利管理事务中心,上海 200002
- 折叠
摘要
Abstract
Vegetables are the main crops planted in Shanghai,and the nitrogen application and irrigation intensity in vegetable fields are relatively high,resulting in nitrogen loss exceeding the general field loss level.Studying the reduction effect of water resources conservation and utilization models on water and nitrogen in vegetable fields in Shanghai is of great significance for agricultural water conservation and water environment improvement in Shanghai.Research has found that applying nitrogen fertilizer has a positive effect on the formation of dry matter in the organs of green vegetables.According to the results of soil nitrogen residue,higher irrigation rates can promote nitrogen transfer to deeper soil layers,with the highest nitrogen residue in the 40～80 cm soil layer controlled at a lower limit of 90%moisture.The accumulation of dry matter on the ground reached its highest level under the lower limit of 75%soil moisture control,and was significantly higher than other treatments.关键词
水资源/节水灌溉/氮素流失Key words
water resource/water-saving irrigation/nitrogen loss分类
农业科技引用本文复制引用
纪文俊,居艳阳..农业水资源节约利用模式对上海市菜地水氮的削减效应研究[J].中国资源综合利用,2025,43(3):19-23,5.
