冬季增温对土壤水分及盐碱化的影响  

Effect of winter warming on soil moisture and salinization

作　　者：肖国举[1] 张强[2] 李裕[2] 张峰举[1] 罗成科[1] 

机构地区：[1]宁夏大学新技术应用研究开发中心,银川750021 [2]中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,兰州730020

出　　处：《农业工程学报》2011年第8期46-51,共6页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家公益性(气象)行业科研专项(GYHY200806021-05);教育部新世纪优秀人才项目(NCET-09-0859);国家科技支撑计划(2007BAC08B01)

摘　　要：为了研究冬季增温对土壤水分及盐碱化的影响,采用红外线辐射器增温法,在宁夏引黄灌区西大滩试验站进行了大田试验。结果表明,冬季增温0.5～2.5℃与未增温比较,土壤层0～20、>20～40、>40～60cm土壤含水率分别减少0.2%～3.9%、0.4%～1.4%、0.3%～0.6%;碱化度分别增加1.2%～4.4%、0.1%～0.4%、0.2%～0.6%;总碱度分别增加0.01～0.04、0.01～0.03、0.01～0.02cmol/kg;pH值分别增加0.1～1.0、0.1～0.5、0.1～0.6;全盐分别增加0.05～0.71、0.02～0.20、0.01～0.11g/kg。冬季增温加剧了土壤水分蒸发,增强了土壤盐碱化,导致土壤盐碱化危害加剧。In order to study the effect of winter warming on soil moisture and salinization, the field experiments that increased temperature by an infrared radiator were designed at Xidatan experiment station of Yellow River irrigation areas in the Ningxia Hui Autonomous Region. The results showed that compared with no warming,winter warming by 0.5-2.5℃ reduced the moisture content of 0-20, 20-40 and 40-60 cm soil horizons by 0.2%-3.9%, 0.4%-1.4% and 0.3%-0.6%, respectively; correspondingly alkalization increased by 1.2%-4.4%, 0.1%-0.4% and 0.2%-0.6%; total alkalinity increased by 0.01~0.04, 0.01~0.03 and 0.01-0.02 cmol/kg; pH value increased by 0.1-1.0, 0.1-0.5 and 0.1-0.6; and total salt content increased by 0.05-0.71, 0.02-0.20 and 0.01-0.11 g/kg. Winter warming intensifies soil moisture evaporation and then increases the soil salinization.

关 键 词：气候变化 土壤水分 温度 土壤盐碱化 宁夏引黄灌区 

分 类 号：S152.73[农业科学—土壤学] S156.4[农业科学—农业基础科学]