土壤粒级空间分布及其与土壤养分的关系-中国烟草科学.PDF

2011-10 ，32 （5 ） Chinese Tobacco Science 47 1,2 1* 1 3 3 1. 450002 2. 675700 3. 467100 GIS 0.002~0.02 mm 0.002 mm0.02~2 mm435 609 657 mKringing P0.01P0.01 S152.3 1007-5119201105-0047-05 DOI 10.3969/j.issn.1007-5119.2011.05.011 Spatial Distribution of Soil Particle Composition and its Relationship with Soil Nutrients in Tobacco Planting Soils 1,2 1* 1 3 3 WANG Xinzhong , LIU Guoshun , ZHANG Zhengyang , LIU Qinghua , WANG Zhenhai (1. National Tobacco Cultivation, Physiology and Biochemistry Research Center, Henan Agricultural University, Zhengzhou 450002, China; 2. Nanjian County Tobacco Company of Yunan Province, Yunnan 675700, China; 3. Pingdingshan Tobacco Company of Hunan Province, Pingdingshan, Henan 467100, China) Abstract: Spatial variability of soil particle composition was measured by use of geostatistics and GIS techniques for an 87 ha tobacco field with 100 m sampling interval in Chahe, Jia County, Henan Province. The spatial distribution of soil particle and its relationship with soil nutrients were analyzed. The results showed that the semivariogram for soil silt (0.02-0.002 mm) was well fitted by exponential model with medium spatial correlation, while soil clay (0.002 mm) and sand (0.02-2 mm) by spherical models with medium spatial correlation. The spatial correlation distance for soil silt, clay and sand were 435, 609 and 657 m, respectively. The spatial distribution pattern of soil particle composition was intuitively characterized by kriging interpolation. Soil organic matter, total nitrogen, available phosphorous and available potassium were significantly