干旱地区农业研究2016，Vol.34Issue(2)：232-238,7.DOI:10.7606/j.issn.1000-7601.2016.02.37
不同灌水下限对膜下滴灌棉花土壤水盐运移和产量的影响
Effects of different irrigation lower limits on soil water-salt transport and yield of cotton under mulched drip-irrigation
摘要
Abstract
Different irrigation lower limits were selected to set four treatments at each growth stage ,(the treatments of A ,B ,C and D were 425 mm·30times-1 ,345 mm·22times-1 ,545 mm·18times-1 ,and 595 mm·16times-1 ,re-spectively ) .Their effects on soil water-salt transport ,salt distribution and accumulation characteristics were studied to e-valuate the rule for soil water-salt transport ,distribution characteristic and cotton yield through a field experiment under mulched drip-irrigation at Bazhou Irrigation Experimental Station (Korla ,Xinjiang ,China ) in 2014 .TRIME-T3 tubular TDR was employed to measure soil moisture content as the irrigation indicator .It was preliminary concluded that different irrigation lower limits impacted field irrigation and yield of cotton .When the irrigation lower limit was set to be high (A&B treatments) increased the irrigation frequency and water consumption in the field ,and caused the distance and scope of soil moisture movement within the horizontal limit .Salt leaching effect was not very good .When the irrigation lower limit was set to be low (C&D treatments ) ,the amount for single irrigation and the irrigation quota were both in-creased ,showing a good effect on the integrated control of salt and resulting in high cotton yield .The irrigation based on different irrigation lower limits had significant influence on the growth of cotton at every growth stage and had certain in-fluence on cotton yield .In particular ,B treatment (345 mm·22times-1 ) could result in a maximum irrigation water use efficiency of 1 .79 kg·m-3 and D treatment (595 mm·16times-1 ) could cause a maximum cotton yield of 6 630 kg· hm-2.关键词
膜下滴灌/灌水下限/水盐运移/TRIME-T3管式TDR/棉花/产量Key words
mulched drip-irrigation/irrigation lower limit/water-salt transport/TRIME-T3 tubular TDR/yield/cotton分类
农业科技引用本文复制引用
汪昌树,杨鹏年,姬亚琴,Miguel Aguila..不同灌水下限对膜下滴灌棉花土壤水盐运移和产量的影响[J].干旱地区农业研究,2016,34(2):232-238,7.基金项目
新疆维吾尔自治区“十二五”重大科技专项（201130103－3）；中德合作“中国塔里木河流域沿河绿洲的可持续管理（SuMaRi-O ）”；新疆水文学及水资源重点学科基金 （）
