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塔里木河上游典型绿洲不同连作年限棉田土壤质量评价/Soil quality assessment of continuous cropping cotton fields for different years in a typical oasis in the upper reaches of the Tarim River[J]
Authors
GONG Lu
GUI Dongwei
+10 more
L(U) Guanghui
ZHANG Haifeng
中国科学院新疆生态与地理研究所,乌鲁木齐830001
吕光辉
张海峰
新疆大学资源与环境科学学院,乌鲁木齐830046
新疆策勒荒漠草地生态系统国家野外科学观测研究站,策勒848300
杜东伟
绿洲生态教育部重点实验室,乌鲁木齐830046
贡璐
Publication date
1 January 2011
Publisher
Abstract
以塔里木河上游阿拉尔垦区为典型样区,选择0、3、8、12、20、30 a等不同连作年限棉田为研究对象,综合考虑土壤物理、化学和生物学性质,分析了12个土壤理化及酶活性指标;基于因子分析和聚类分析法评价棉田间土壤质量的差异并划分等级,利用产量持续指数验证评价结果.研究表明:不同连作年限的棉田土壤的理化性质和酶活性均存在一定差异;棉田的土壤质量随年限呈先上升后下降的趋势,8、12 a棉田土壤质量相对较高,20、30 a土壤质量有退化趋势;土壤质量评价值与产量持续指数变化趋势一致,后者略显滞后效应
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016