| 沙地大型喷灌机施肥灌溉配套鱼鳞坑对马铃薯生长和水肥利用的影响研究 |
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| 引用本文： | 冯志文,康跃虎,万书勤,刘士平. 沙地大型喷灌机施肥灌溉配套鱼鳞坑对马铃薯生长和水肥利用的影响研究[J]. 节水灌溉, 2016, 0(9): 83-86 |
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| 作者姓名： | 冯志文 康跃虎 万书勤 刘士平 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室，北京 100101; 中国科学院大学，北京 100049;2. 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室,北京,100101 |
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| 基金项目： | 国家科技支撑计划课题(2012BAD06B01 |
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| 摘 要： | 为了实现沙地上大型喷灌机施肥灌溉下马铃薯的水肥高效利用,通过田间试验研究了大型喷灌机施肥灌溉条件下配套水土保持措施——鱼鳞坑对马铃薯生长、水肥利用效率等的影响。结果表明,在大型喷灌机条件下,通过负压计指导施肥灌溉,当垄中心20cm深度处的土壤水基质势低于-15kPa时进行施肥灌溉时,在马铃薯垄间挖鱼鳞坑,能有效地改善根区土壤水分状况,促进马铃薯的生长,不仅马铃薯增产22.1%~33.3%,还使肥料偏生产力提高了33.3%~36.8%。
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| 关 键 词： | 中心支轴式喷灌机 鱼鳞坑 灌溉水利用效率 肥料利用效率 |
Effects of Scale-like Pit Tillage on Potato Growth and the Water and Fertilizer Efficiency Under Sprinkler Fertigation |
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| Abstract: | A 3-year field experiment of scale-like pit tillage on potato yield,irrigation water use efficiency and partial fertilizer produc-tivity was carried out to realize efficiently use for water and fertilizer under center pivot sprinkler system (LEPA)fertigation.Results show that the soil matric potential at the depth of 20 cm at the center of row was controlled above -15 kPa for LEPA fertigation. Scale-like pit tillage between potato rows was applied to effectively improve the soil moisture in the root zone,promote the growth of potato,increase potato yield by 22.1%~33.3%,and improve fertilizer use efficiency by 33.3%~36.8%. |
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| Keywords: | center pivot sprinkler system (LEPA) scale-like pit tillage irrigation water use efficiency partial factor productivity from applied fertilizer |
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