| 宰松梅,仵 峰,温 季,韩启彪.不同滴灌方式对棉田土壤盐分的影响[J].水利学报,2011,42(12): |
| 不同滴灌方式对棉田土壤盐分的影响 |
| Effect of drip fertigation on soil salinity of cotton field in Northwest China |
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| DOI： |
| 中文关键词: 棉田 地下滴灌 膜下滴灌 土壤盐分 盐分离子 |
| 英文关键词: cotton field subsurface drip fertigation mulched drip fertigation soil salinity salt ions |
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| 中文摘要: |
| 采用田间抽样调查分析的方法，研究了不同滴灌方式对新疆棉田土壤盐分的影响。结果表明，采用滴灌施肥8 年后，0~100cm土体土壤总盐平均质量分数膜下滴灌比地下滴灌高10.98% ；在20cm以上土层，土壤总盐平均质量分数地下滴灌比膜下滴灌高出23.35% ；在60~100cm土层，土壤总盐平均质量分数膜下滴灌比地下滴灌高出85.99% 。造成不同灌溉方式下土壤总盐质量分数差异的主要离子为Cl-和Na+。膜下滴灌条件下，土壤Cl-和Na+的质量分数较高。试验区采用地下滴灌时，应防止地表盐分的积累，同时，应结合喷灌或地面灌溉，解决棉花苗期的土壤水和盐的问题。 |
| 英文摘要: |
| The method of field sampling and analysis was adopted to study the effect of different drip ferti ?
gation on soil salinity in cotton field in Xinjiang Uygur Autonomous Region，China. The results show that the average total soil salinity in depth ranging from 0 to 100cm under the condition of mulched drip fertigation is 10.98% higher than that of subsurface drip irrigation ，after 8 years fertil-ization by drip irrigation.The average total soil salinity in the shallow layers （above 20cm）is 23.35% higher ，while it is 85.99% lower in the deep layers （60~100cm）for subsurface drip irr-ig-ation ，compared with mulched drip fertigation. The major salt ions which cause the difference of total soil salinity between two irrigation methods are regarded as Cl-and Na+. Sprinkler and surface irrigation should be adopted to combined with drip irriga ?tion for preventing the surface accumulation of soil salinity . |
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