摘要
土壤养分通常具有较大的空间变异性,且变异规律随土壤类型和养分的变化而变化。对黑龙江省密山市长期试验点的草甸白浆土0～20cm和20～40cm两层土壤有效磷的变异性通过经典统计学方法和地统计学方法进行了分析。经典统计学分析结果表明草甸白浆土有效磷具有中等至较强程度的变异。地统计学结果表明草甸白浆土有效磷最大相关距离在85m左右,两层土壤的块金方差/基台值分别为47.63%和34.87%具有中等至较强程度的空间相关性。
Soil nutrients often appear great variability in spatial, and their variability characteristic change with the types of soil and nutrient. The variability characteristic of available phosphor of meadow albic bleached soil was analyzed by traditional statistics and geo-statistics technique. The soil samples were collected at two layers （0-20 cm and 20-40 cm） from a long-term test field in Mishan city Heilongjiang province. The result from traditional statistics showed that the variability of available phosphor of meadow albic bleached soil was between moderate and strong degree. The result from geo-statistics showed that the major range of available phosphor of meadow albic bleached soil was 85 m around. The radios of nugget to still of two layers were 47.63% and 34.87% respectively, so the spatial correlations of them were between moderate and strong degree.
出处
《中国农学通报》
CSCD
北大核心
2009年第6期159-161,共3页
Chinese Agricultural Science Bulletin
基金
国家科技支撑计划"粮油安全生产的综合示范"(2006BAK02A25)
黑龙江省科学技术计划重点项目"黑龙江省食品安全‘数据中心’的研究与开发"(GA06C101-03)
黑龙江省科学技术计划重点项目"数字农业示范区农田(地理)信息系统研究"(GB06B601-2)
关键词
有效磷
空间变异
草甸白浆土
available phosphor, spatial variability, meadow albic bleached soil
