摘要
在新疆库尔勒市包头湖农场48 m×56 m(一根支管控制)的范围内,布置土壤水分监测点共计64个。利用地统计学方法,研究了棉花膜下滴灌条件下田间土壤含水率在空间和时间上的变异规律,以便为棉花膜下滴灌自动化灌溉系统中墒情监测传感器的合理布设及墒情预测提供理论依据。结果表明,各测次的田间土壤含水率具有中等程度的空间相关性;随着土层深度的增加,土壤含水率空间相关度降低。灌水前的空间相关度略小于灌水后的空间相关度;随着时间的推移,土壤含水率的空间相关度降低。
A total of 64 soil moisture monitoring points in 48 m× 56 m(a branch control) were laid out in Baotouhu Farm in Korla in Xinjiang.This paper analyzes the spatial and temporal variability of soil moisture under mulched drip irrigation of cotton fields by geological statistics,provides a guideline for the soil moisture monitoring program and soil moisture prediction.The results indicate that the field soil moisture is moderate spatial autocorrelation in the whole irrigation season.As the sampling depth increases,the space heterogeneity of soil moisture gradually weakens.As time passes by,spatial variability of soil moisture gradually weakens.
出处
《中国农村水利水电》
北大核心
2010年第10期22-24,共3页
China Rural Water and Hydropower
基金
"十一五"国家科技支撑计划项目(2007BAD38B05)
新疆维吾尔自治区高技术研究与发展计划项目(200712111)
新疆水利水电工程重点学科基金资助项目
关键词
时空变异性
土壤含水率
膜下滴灌
地统计学
spatial and temporal variability
soil moisture
mulched drip irrigation
geostatistics