基于Hydrus-3D模型的新疆生产建设兵团石河子121团秋浇定额研究  

Autumn Irrigation Quota Based on Hydrus-3D Model in Shihezi Regimental Farm 121,Agricultural Division of Xinjiang Production and Construction Corps

作　　者：虎胆.吐马尔白 朱冬桥 马合木江.艾合买 赵永成[1] 古莱姆拜尔.艾尔肯 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052

出　　处：《新疆农业大学学报》2015年第5期420-425,共6页Journal of Xinjiang Agricultural University

基　　金：国家自然科学基金项目(51069015);新疆维吾尔自治区"十二五"重大专项(201130103-3);新疆水利水电重点学科

摘　　要：通过Hydrus-3D模型计算不同秋浇定额对土壤水盐变化的影响,研究适合新疆生产建设兵团石河子121团的秋浇定额。结果表明,较大的秋浇定额会产生较大的底层水分通量,造成地下水位升高。受到冻融作用的影响,在冻融期土壤水分过大也会加剧盐分的集聚,秋浇定额应尽可能的小。同时较大的秋浇定额,将会使土壤盐分淋洗的更为充分,给春季种子的萌发提供较好条件,秋浇定额应尽可能的大。当秋浇定额为2 250m^3/hm^2时,脱盐率达到55.71%,0~60cm土层含盐率仅为0.127%~0.481%,能较好的满足棉花春季播种的需求。Hrdrus-3D model was used to calculate the effects of different autumn irrigation quota on vari-ation of water and salt in soil and study the suitable autumn irrigation quota for Regimental Farm 1 2 1 ,Ag-ricultural Division of Xinjiang Production and Construction Corps,Shihezi,Xinjiang.Results indicated that the larger autumn irrigation quota could produce larger water flux of bottom layer,which resulted in the increasing ground water level.Because there were maximum of salt water in the active period,which aggra-vated salt gathering in soil water.The autumn irrigation should be carried as minimum as possible.At the same time,the maximum autumn irrigation quota could be satisfied with drip washing in autumn irrigation period,which provided excellent conditions for germination of different seeds in spring season.When au-tumn irrigation quota was 2 250 m3/hm2 ,the desalinization ratio reached 55.71%,therefore there were only 0.127%-0.481% of saltness rate in soil layer of 0-60 cm,which can satisfy the request of cotton sowing during the spring season.

关 键 词：秋浇定额 Hydrus-3D 水盐运移 

分 类 号：S274[农业科学—农业水土工程]