微咸水膜下滴灌时序对土壤盐分及作物产量的影响  

The Impact of Irrigation Timing on Soil Salinity and Crop Yield under Mulched Drip Irrigation with Brackish Water

作　　者：黄丹[1,2] 王春霞[1,2] 何新林[1,2] 杨广[1,2] 芦建刚 

机构地区：[1]石河子大学水利建筑工程学院,新疆石河子832003 [2]现代节水灌溉兵团重点实验室,新疆石河子832000

出　　处：《灌溉排水学报》2014年第1期7-11,共5页Journal of Irrigation and Drainage

基　　金：国家自然基金-新疆联合基金重点项目(u1203282);石河子大学高层次人才科研启动资金项目(RCZX201129);兵团灌溉试验站项目

摘　　要：基于田间试验，进行8种不同微成水、淡水滴灌顺序的轮灌试验。结果表明，各生育期内各处理土壤盐分基本聚集在表层土0～10cm及土壤剖面60cm处，其土壤盐分剖面分布与微咸水灌溉时序和灌溉定额有关，微成水灌溉时期越多、灌溉定额越大，各土层盐分积累状况越严重。积盐严重程度表现为：成成成威〉淡成成成〉淡成成淡〉淡咸淡成〉淡淡成成〉淡成淡淡〉淡淡咸淡〉淡淡淡淡；作物相对产量表现为：淡淡成成〉淡成成淡〉淡成成成〉淡成淡成〉淡淡咸淡〉淡成淡淡〉成成成成。处理4（淡淡成成）组合滴灌下各项指标较均衡，节约淡水率68％，剖面积盐率57．22％，相对作物增产率7．3％。Field experiments, with eight different rotation irrigation modes of brackish water and freshwater, were carried out to study the changes of soil salt content and crop yield. The results showed that： soil salinity gathered basically in 0-10 cm and 60 era of soil, and the soil salt distribution was related to the irrigation timing and the irrigation quota of brackish water. The more brackish water irrigation frequency and the greater the irrigation quota, the more serious soil salt accumulation. The severity of soil salt accumulation was as follow： treatment 8〉treatment 7〉treatment 6〉treatment 5〉treatment 4〉treatment 3〉 treatment 2〉 treatment 1 ; Relative crop yield changed as follows： treatment 4 〉 treatment 6 〉 treatment 7 〉 treatment 5〉treatment 2〉treatment 3〉treatment 8. Various indicators were more balanced, the fresh- water-saving rate was 68G, the accumulated rate of soil salt in profile was 57.22%, and relative improving rate of crop yield was 7.3% in the treatment 4.

关 键 词：微咸水 膜下滴灌 轮灌时序 盐分 产量 

分 类 号：S275.6[农业科学—农业水土工程]