干旱地区农业研究Issue(4)：117-121,5.
棉花连作对渭干河-库车河三角洲绿洲土壤理化性质的影响
Effect of continuous cotton cropping on soil physical and chemical properties in Ugan -Kuqa River Delta Oasis
摘要
Abstract
The objective of this study was to determine the soil physical and chemical properties and enzymes activi-ties of cotton field after different continuous cropping ages in Ugan -Kuqa River Delta Oasis .Results showed that :The soil bulk density ,coarse sand and fine sand contents increased with the increase of continuous cropping ages ,whereas porosity and the clay content decreased ;With the increase of continuous cropping ages ,pH value ,salt and potassium contents decreased ,whereas the contents of organic matter and alkaline hydrolytic nitrogen increased significantly , as well as available phosphorus content was relatively stable or decreased slightly .These changes resulted in imbalance of nitrogen ,phosphorus ,andpotassium ;With the increase of continuous cropping ages ,the activities of urease ,catalase , invertase ,protease ,and phosphatase increased at first ,and then decreased .The changes of soil physical and chemical properties and enzymes activities were significant after 15 years of continuous cropping ,except for the activities of pro-tease and phosphatase which changed significantly after 20 years .It is therefore suggested that the maximum year of con-tinuous cotton cropping be 15 years for Ugan-Kuqa River Delta Oasis .关键词
土壤理化性质/土壤酶活性/棉花连作/渭干河-库车河三角洲绿洲Key words
soil properties/soil enzyme activities/continuous cotton cropping/Ugan-Kuqa River Delta Oasis分类
农业科技引用本文复制引用
玉苏甫·买买提,满苏尔·沙比提,阿曼古丽·艾孜子..棉花连作对渭干河-库车河三角洲绿洲土壤理化性质的影响[J].干旱地区农业研究,2014,(4):117-121,5.基金项目
国家自然科学基金资助项目（41261056）；国家自然科学基金项目 （）
