关键词：
冀西北寒旱区;滴灌;土壤水分动态;产量;水分利用效率
摘 要：
为探索冀西北寒旱区地膜覆盖和限量补灌对马铃薯田土壤水分运移及水分利用效果的影响,采取随机区组方法设置起垄(T1)、起垄覆膜(T2)、膜下补灌22.5 mm(T3)、膜下补灌45 mm(T4)和露地补灌45 mm(T5)5种不同处理,监测了不同措施对土壤水分时空运移、马铃薯生产量、水分利用效率的影响。结果表明,区域草甸栗钙土马铃薯田的主要供水层为0～40 cm土层,块茎膨大期为农田耗水关键期。旱作下覆膜较露地(ck)可使马铃薯增产76.44%,水分利用效率提高83.33%;膜下滴灌补水22.5 mm时可增产123.47%,水分利用效率提高122.00%。露地补灌45 mm可增产52.17%,水分利用效率提高51.82%。覆膜和补灌未显著地增加农田耗水量,但显著地提高马铃薯的产量和水分利用效率。
译 名：
Effects of Plastic Film Mulching and Supplementary Irrigation on Water Use in Arid Potato Field
作 者：
REN Dong-xue;ZHANG Li-feng;LIU Yu-hua;LIU Ke-xin;Agronomy Courtyard, Hebei Agricultural University;Zhangbei Key Field Research Station of Agricultural Resources and Ecological Environment, Ministry of Agriculture of China;
关键词：
cold and arid region of northwest Hebei;;drip irrigation;;soil moisture dynamics;;yield;;water use efficiency
摘 要：
In order to explore the effects of plastic-film mulching and limited supplementary irrigation on soil water transport and water use effect in potato fields in the cold and dry areas of northwest hebei province, five different treatments of ridging(T1), ridging and mulching(T2), drip irrigation under mulch with 22.5 mm(T3), drip irrigation under mulch with 45 mm(T4) and drip irrigation with 45 mm(T5), were set by using the method of random block group to monitor the effects of different measures on the temporal and spatial transport of soil water, potato field and water use efficiency. The results showed that the main water supply layer of potato field in loamy meadow chestnut soil was 0～40 cm soil layer, and the tuber expansion period was the key period of farmland water consumption. Compared with CK, the yield and the water use efficiency of the treatment of plastic film mulching under dry cultivation was increased by 76.44% and 83.33%, respectively; the yield and the water use efficiency of the treatment of drip irrigation under mulch with 22.5 mm was increased by 123.47% and 122.00%, respectively; the yield and the water use efficiency of drip irrigation with 45 mm was increased by 52.17% and 51.82%, respectively. It can be concluded that mulching and irrigation did not significantly increase the water consumption of farmland, but significantly incrense the yield and WUE of potato.
