| 田块尺度下的苏北滩涂新垦农田土壤盐分空间变异性分析 |
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| 引用本文： | 张建兵,杨劲松,姚荣江,余世鹏,李芙荣. 田块尺度下的苏北滩涂新垦农田土壤盐分空间变异性分析[J]. 灌溉排水学报, 2013, 32(1): 39-42 |
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| 作者姓名： | 张建兵 杨劲松 姚荣江 余世鹏 李芙荣 |
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| 作者单位： | 1. 中国科学院南京土壤研究所/土壤与农业可持续发展国家重点实验室,南京,210008
2. 中国科学院南京土壤研究所/土壤与农业可持续发展国家重点实验室,南京210008;中国科学院南京分院东台滩涂研究院,江苏东台224200 |
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| 基金项目： | 公益性行业(农业)科研专项经费项目(200903001);国家自然科学基金项目(41101199,41171181);江苏省自然科学基金项目(BK2009337,BK2011423,BK2011425,BK2011883) |
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| 摘 要： | 为了消减盐碱障碍和提升地力,研究了苏北典型滩涂新垦农田土壤盐分的空间变异性。结果表明,农田土壤盐分东低西高,整体上属轻度盐渍化(含盐量1.27～1.98g/kg),但存在着盐斑(含盐量大于2g/kg)。表层及次表层土壤含盐量空间自相关程度强烈,其结构方差比分别为88.88%、80.75%;而其余土层含盐量间自相关程度为中等。垂直方向上,土壤盐分主要集中在犁底层(20～40cm)。
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| 关 键 词： | 田块尺度 滩涂新垦农田 电导率 空间变异 苏北 |
Spatial Variability of Soil Salinity in Reclaimed Mudflat Farmland of North Jiangsu Province |
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| ZHANG Jian-bing,YANG Jing-song,YAO Rong-jiang,YU Shi-peng,LI Fu-rong. Spatial Variability of Soil Salinity in Reclaimed Mudflat Farmland of North Jiangsu Province[J]. Journal of Irrigation and Drainage, 2013, 32(1): 39-42 |
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| Authors: | ZHANG Jian-bing YANG Jing-song YAO Rong-jiang YU Shi-peng LI Fu-rong |
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| Affiliation: | 1(1.State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China;2.Dongtai Institute of Tidal Flat,Nanjing Branch of the Chinese Academy of Sciences,Dongtai 224200,China) |
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| Abstract: | The spatial variability of saline-alkaline was studied to reduce soil salt content and inprove land fertility in the reclaimed mudflat farmland.The results showed that field was mild salinization with some porphyritic severe salinization in the southwest.The spatial heterogeneity degrees of 0-20 cm and 20-40 cm in soil depth were strong dependent with the structural variation ratio [C/(C+C0)] of 88.88%,80.75% respectively;however,only moderate degree of spatial heterogeneity was found in the other three soil layers.The top of soil salt content appeared in the 20-40 cm soil layer,which was the plow pan of the study field. |
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| Keywords: | field scale mudflat farmland soil electric conductivity spatial variability north Jiangsu province |
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