干旱地区农业研究2013，Vol.31Issue(3)：90-94,5.
滴灌棉田不同盐分土壤水分变化规律及其利用效率研究
Variation and use efficiency of soil moisture under different salt content in cotton field with drip irrigation
摘要
Abstract
In order to investigate water-salt interaction effect in drip irrigation cotton,soil moisture content,daily evapotranspiration amount,alternation pattern of cotton dry material accumulation,and water use efficiency of cotton dry material were studied in the soils of different salt content under drip irrigation.An indoor simulation experiment was designed and performed to obtain cotton evapotranspiration and dry material accumulation level by weighing method.The alternation pattern of cotton daily evapotranspiration level,dry material accumulation amount,and soil moisture content in soils of different salt content (0 (control)、0.15％ 、0.25％ 、0.35％ 、0.45％ 、0.55％ 、0.65％) were analyzed as well as the cotton dry material water use efficiency.Along with advancement of cotton growth period,variation of soil moisture content and daily average evapotranspiration level of different salt content were first increased and then decreased; Soil daily average evapotranspiration reached the maximum level at cotton buds-bolls period; Cotton dry material accumulation and water consumption amount decreased with increase of soil salinity content.T5 treatment had highest cotton dry material water use efficiency.However,it did not show significant difference compared with CK,T1,T2 and T5,which indicates that moderate amount of salt content in soil can effectively improve water use efficiency at certain extent.关键词
棉花/滴灌/土壤水分/土壤盐分/干物质/日蒸散量/水分利用效率Key words
cotton / drip irrigation / soil moisture / soil salinity / dry material / daily evapotranspiration amount / water use efficiency分类
农业科技引用本文复制引用
李冬冬,王海江,吕新..滴灌棉田不同盐分土壤水分变化规律及其利用效率研究[J].干旱地区农业研究,2013,31(3):90-94,5.基金项目
兵团青年科技创新资金专项(2012CB012) （2012CB012）
石河子大学校级课题(ZRKXYB-06,ZRKX2009D02-3) （ZRKXYB-06,ZRKX2009D02-3）
