| Autor: |
Chang, Tian, Xuan, Zhou, Qiang, Liu, Gui Xian, Xie, Xiang Min, Rong, Yu Ping, Zhang, Si Yi, Huang, Jian Wei, Peng |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Ying yong sheng tai xue bao = The journal of applied ecology. 29(10) |
| ISSN: |
1001-9332 |
| Popis: |
Nitrogen (N) leaching is a major pathway of N losses in paddy fields. Here, an experiment was conducted to assess the effects of the reduction of controlled-release urea application on grain yield and N leaching in a double-cropping paddy field. Fertilization treatments included zero-N (CK, control, 0 kg N·hm大量施用氮肥引起的土壤氮素淋失是稻田氮素损失的一个重要途径.为探究自然降雨过程中典型双季稻田氮渗漏淋失特点,采用田间渗漏池法,通过大田小区试验,研究控释尿素减施对稻田土壤60 cm深处渗漏水中氮淋失和水稻产量的影响.结果表明: 施肥初期出现氮渗漏淋失峰值,这是防控的关键时期;双季稻生长季控释尿素减氮20%(0.8CRU)和减氮30%(0.7CRU)处理全氮淋失量分别为42.3和37.7 kg·hm |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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