摘要
以内蒙古河套灌区为背景对耕地与盐荒地盐分变化展开研究。在野外实测和实验室检测数据的基础上,分析多因素影响下耕地和盐荒地盐分变化规律。结果表明,盐荒地和耕地0~100 cm土层中都含有60~80 meq/100 g的非水溶性钙盐,而盐荒地水溶性盐的含量明显升高。年度变化显示,耕地可溶盐年均提高了4.46%;盐荒地可溶盐年均提高了4.48%;耕地非可溶盐年均提高了2.99%;盐荒地非可溶盐年均提高了3.87%,灌区每年灌溉水带入的盐分有少量在盐荒地中积聚。盐分变化对作物生长的影响以及发展改良措施具有重要意义,为灌区水盐管理提供科学依据。
This paper studied the salinity variation of cultivated land and salt wasteland in Hetao Irrigation District in Inner Mongolia.Based on the field data and laboratory testing data, the paper analyzed the change rule of salinity in cultivated land and salt wasteland under multi-factor influence.The results showed that the 60-80 meq/100 g non-water-soluble salt Ca existed in 0-100 cm soil layer both in salt wasteland and cultivated land while the content of water-soluble salt in the wasteland increased significantly.The annual change showed that the water-soluble salt in the cultivated land increased by 4.46% annually,while the data in the salt wasteland was 4.48% .The non-water-soluble salt in the cultivated land increased by 2.99% annually, while the data in the salt wasteland was 3.87%, which meant that a small amount of the salt brought by the irrigation water into the irrigated area accumulated in the salt wasteland.The salt variation is important to the crop growth and draft of improving measures.It can provide scientific basis for the management of soil moisture and salt content in the irrigated area.
出处
《现代农业科技》
2017年第3期156-158,共3页
Modern Agricultural Science and Technology
基金
内蒙古自治区高等学校创新团队发展计划支持(NMGIRTB1611)
河套学院校级课题(hyzQ201507)
关键词
内蒙古河套灌区
耕地
盐荒地
土壤盐分
Hetao irrigation district in Inner Mongolia
cultivated land
salt wastelend
soil salinity
