| 不同灌水模式对土壤水分和硝态氮分布的影响 |
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| 引用本文： | 谭军利,王林权,王西娜,李生秀.不同灌水模式对土壤水分和硝态氮分布的影响[J].灌溉排水学报,2008,27(5):29-33. |
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| 作者姓名： | 谭军利 王林权 王西娜 李生秀 |
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| 作者单位： | [1]中国科学院地理科学与资源研究所,北京100101 [2]西北农林科技大学,陕西杨凌712100 [3]中国科学院研究生院,北京100039 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金 |
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| 摘 要： | 通过2年带防雨棚微区试验研究了传统灌水施肥与水肥异区交替灌水施肥对土壤中水分和硝态氮分布的影响。结果表明:土壤水分和硝态氮分布与灌水方式和灌水量有关。无论灌水量高低,第1次灌水后,水肥异区的施肥沟与灌水沟在0~60 cm土层土壤水分和硝态氮含量存在差异。第2次灌水后,施肥沟与灌水沟之间土壤水分含量的差异会随灌水量增加而缩小,而二沟之间0~60 cm土层中硝态氮含量的差异则随灌水量的增加而增加。同时,土壤中表层及亚表层硝态氮含量随灌水量的增加而增加。考虑到减少水分的深层渗漏和提高肥料的有效性,在交替灌水时必须控制灌水量,建议灌水量在450~600 m3/hm2为佳。
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| 关 键 词： | 灌水模式 夏玉米 土壤水分 硝态氮 |
Influence of Different Irrigation Patterns on the Distribution of Soil Moisture and Nitrate |
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| TAN Jun-li,WANG Lin-quan,WANG Xi-na,LI Sheng-xiu.Influence of Different Irrigation Patterns on the Distribution of Soil Moisture and Nitrate[J].Journal of Irrigation and Drainage,2008,27(5):29-33. |
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| Authors: | TAN Jun-li WANG Lin-quan WANG Xi-na LI Sheng-xiu |
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| Institution: | TAN Jun-li1,3,WANG Lin-quan2,WANG Xi-na2,LI Sheng-xiu2(1.Institute of Geographical Sciences , Natural Resources Research,CAS,Beijing 100101,China,2.College of Resources , Environment,Northwest Agriculture & Forestry University,Yangling 712100,3.Graduate School,Beijing 100039,China) |
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| Abstract: | A two-year micro-field trials was carried out to determine the influences of traditional furrow irrigation and alternate furrow irrigation with fertilization and irrigation in different rows on the distribution of soil moisture and nitrate.Results showed that the distribution of soil moisture and nitrate were affected by irrigation patterns,water amount and frequency of irrigation.Regardless the amount of irrigation,there was differences between fertilization furrow and irrigation furrow in soil moisture co... |
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| Keywords: | irrigation patterns summer maize soil moisture nitrate |
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