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| 引用本文: | 莫 宇,高 峰,马欢欢,等.不同施氮条件下再生水灌溉对土壤理化性质及脲酶活性的影响[J].灌溉排水学报,0,():-. |
| moyu,gaofeng,mahuanhuan,et al.不同施氮条件下再生水灌溉对土壤理化性质及脲酶活性的影响[J].灌溉排水学报,0,():-. |
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| 不同施氮条件下再生水灌溉对土壤理化性质及脲酶活性的影响 |
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莫 宇, 高 峰, 马欢欢, 张 茜, 胡 超, 崔丙健, 刘春成
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中国农业科学院 农田灌溉研究所
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| 摘要: |
| 【目的】探讨不同施氮条件下再生水灌溉对土壤理化性质和脲酶活性的影响。【方法】采用盆栽试验种植上海青，以清水灌溉为对照，研究了不同施氮条件下再生水灌溉对土壤氮素分布和脲酶活性的影响。【结果】与清水灌溉相比，再生水灌溉降低土壤pH，对有机质量OM、全氮TN、铵态氮无显著影响，显著降低土壤EC和水溶性Na+含量，显著增加土壤硝态氮、水溶性K+含量和0~10cm土层脲酶活性。土壤理化性质与脲酶活性相关性分析表明，0~5cm土壤脲酶活性与全氮和水溶性Na+呈显著负相关，与水溶性K+呈显著正相关。【结论】再生水灌溉条件下施120mg/kg氮素更有利于提升土壤养分。 |
| 关键词: 再生水灌溉;理化性质;氮素;脲酶 |
| DOI： |
| 分类号:X |
| 基金项目:国家重点研发计划项目(2017YFC0403503-2)；河南省科技攻关项目202102110264；河南省科技攻关项目(192102110094)；河南省自然科学基金青年项目202300410552；中国农业科学院农业科技创新工程项目(ASTIP202104) |
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| Effects of Reclaimed Water Irrigation on Soil Physicochemical Properties and Urease Activity under Different Nitrogen Application Conditions |
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moyu, gaofeng, mahuanhuan, zhangqian, huchao, cuibingjian, liuchuncheng
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Farmland Irrigation Research Institute，Chinese Academy of Agricultural Sciences
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| Abstract: |
| 【Objective】To investigate the effects of reclaimed water irrigation on soil physicochemical properties and urease activity under different nitrogen application conditions.【Method】The effects of reclaimed water irrigation on soil nitrogen distribution and urease activity under different nitrogen application conditions were studied by pot experiment.【Result】Compared with clean water irrigation, reclaimed water irrigation had no significant effects on organic mass OM, total nitrogen TN, ammonium nitrogen, but significantly decreased soil EC and water-soluble Na+ contents, and significantly increased soil nitrate nitrogen and water-soluble K+ contents and urease activity in 0~10cm soil layer. The correlation analysis between soil physical and chemical properties and urease activity showed that the urease activity in 0~5 cm soil was significantly negatively correlated with total nitrogen and water-soluble Na+, and significantly positively correlated with water-soluble K+. 【Conclusion】Under the reclaimed water irrigation condition, 120mg/kg nitrogen application is more beneficial to increase soil nutrients. |
| Key words: Reclaimed water irrigation; Physicochemical properties; Nitroge; Urease |
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