摘要
为了解膜下滴灌棉田盐分空间分布规律,通过在新疆生产建设兵团121团6连试验站大田试验,采用描述性统计方法,分析了不同连续年份和不同土层深度的土壤盐分空间分布特征。研究结果表明,在0～20cm土层,土壤含盐率相差不大,基本保持在3g/kg以下,属于非盐化土;土壤盐分主要分布在40～100cm土层,含盐率基本都在4g/kg以上,属于轻盐化土和中度盐化土;随着种植年限的增加,40～100cm土层含盐率逐渐减小,产生一定的脱盐现象;试验区总含盐率随种植年限增加呈逐渐减小趋势,说明长期膜下滴灌棉田区域保持适当的洗盐水量（秋浇）,棉花种植是可持续的。
In order to understand the salt distribution of mulching drip irrigation,the spatial distribution characteristics of soil salinity in different years and at different depths of soil layer were analyzed by descriptive statistical methods through the field experiment in the 6th Company of Xinjiang 121 st regiment.The results indicated that in the 0-20 cm soil layer,the salt content of soil is not quite different and basically maintains below 3g/kg,belonging to non salinized soil.Soil salinity is mainly distributed in 40-100 cm soil layer,the salt rate was more than 4g/kg,which belongs to the light and moderate salinized soil.With the increase of planting age,the salt content in 40-100 cm soil layer decreased gradually,and the phenomenon of desalination was produced.The total salt content of the test area showed a decreasing trend with the increase of planting age,which showed that under the condition of proper washing brine（autumn irrigation）,the drip irrigation cotton was sustainable.
出处
《新疆农业大学学报》
CAS
北大核心
2016年第6期483-488,共6页
Journal of Xinjiang Agricultural University
基金
国家自然科学基金项目(51469033)
新疆维吾尔自治区十二五重大专项(201130103-3)
关键词
空间分布
经典统计学
膜下滴灌
space distribution
classical statistics
drip irrigation under film
