吉林西部盐渍土电导率、可溶性钠与裂纹相关性测量  

Correlation between Conductivity,Soluble Sodium and Crack of Saline Soil in West Jilin Province

作　　者：李晓洁[1] 赵凯[1] 任建华[1] 李洋洋[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所长春净月潭遥感实验站,吉林长春130012

出　　处：《土壤与作物》2012年第1期49-54,共6页Soils and Crops

基　　金：国家自然科学基金委员会资助项目(40971189);中国科学院知识创新工程重要方向项目(KZCX2-YW-340)

摘　　要：吉林西部盐渍土的改良,是实现吉林省粮食增产目标的关键。利用激光三维成像技术非接触、无损伤地探测土壤表面形态,计算出土壤开裂的裂纹面积及长度,并探讨其与盐渍土电导率及可溶性钠的相关性。通过对几种人工扰动盐渍土土样的测试研究表明,土壤裂纹面积与电导率和可溶性钠的R2值分别为0.54和0.611 5,土壤裂纹周长与电导率和可溶性钠的R2值分别为0.861和0.918 1,说明裂纹周长与上述两个参数具有较好的相关性。由此可知,土壤的裂纹特征可以反应土壤的电导率和可溶性钠含量,为盐渍土的改良利用提供有效的探测技术。图8,表2,参15。Saline soil improvement is critical for achieving the aim of increasing food production in our province in west Jilin Province.This paper uses three-dimensional laser imaging technology to detect the area and length of soil cracks in a non-contact,non-invasive online way,and study the relationship among soil crack characteristic,soil electrical conduction and soil soluble sodium.Results show that R2 between crack area,soil electrical conductivity and soluble sodium is 0.54 and 0.6115,respectively,and R2 between Crack length,soil electrical conductivity and soluble sodium is 0.861 and 0.9181,respectively.This indicates that crack length has better correlation with these two parameters.Thus,soil electrical conduction and soluble sodium can be inferred from soil crack parameters,which can provides effective technical approach for the improvement of soil saline.

关 键 词：人工扰动盐渍土 土壤电导率 可溶性钠 土壤裂纹 

分 类 号：S287[农业科学—农业水土工程] TN249[农业科学—农业工程]