海水倒灌农田土壤盐分空间变异特征

doi:10.13758/j.cnki.tr.2016.03.030

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海水倒灌农田土壤盐分空间变异特征
DOI:
                        10.13758/j.cnki.tr.2016.03.030
                    
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作者单位:海南省农业科学院农作物遗传育种重点实验室/农业部海南耕地保育科学观测试验站,海南省农业科学院农作物遗传育种重点实验室/农业部海南耕地保育科学观测试验站,海南省农业科学院农作物遗传育种重点实验室/农业部海南耕地保育科学观测试验站,海南省农业科学院农作物遗传育种重点实验室/农业部海南耕地保育科学观测试验站,海南省农业科学院农作物遗传育种重点实验室/农业部海南耕地保育科学观测试验站,海南省农业科学院农作物遗传育种重点实验室/农业部海南耕地保育科学观测试验站,海南省农业科学院农作物遗传育种重点实验室/农业部海南耕地保育科学观测试验站,海南省农业科学院农作物遗传育种重点实验室/农业部海南耕地保育科学观测试验站,海南省农业科学院农作物遗传育种重点实验室/农业部海南耕地保育科学观测试验站
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中图分类号:S156
基金项目:海南省耕地改良专项(HNGDhs201501)和海南省科研院所技术开发专项(KYYS-2015-12，KYYS-2016-02)资助。

Spatial Variability of Surface Soil Salinity of Farmland by Seawater

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Key Laboratory for Crop Breeding of Hainan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land ConservationHainan,Ministry of Agriculture,Hainan Haikou,571100,Key Laboratory for Crop Breeding of Hainan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land ConservationHainan,Ministry of Agriculture,Hainan Haikou,571100,Key Laboratory for Crop Breeding of Hainan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land ConservationHainan,Ministry of Agriculture,Hainan Haikou,571100,Key Laboratory for Crop Breeding of Hainan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land ConservationHainan,Ministry of Agriculture,Hainan Haikou,571100,Key Laboratory for Crop Breeding of Hainan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land ConservationHainan,Ministry of Agriculture,Hainan Haikou,571100,Key Laboratory for Crop Breeding of Hainan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land ConservationHainan,Ministry of Agriculture,Hainan Haikou,571100,Key Laboratory for Crop Breeding of Hainan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land ConservationHainan,Ministry of Agriculture,Hainan Haikou,571100,Key Laboratory for Crop Breeding of Hainan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land ConservationHainan,Ministry of Agriculture,Hainan Haikou,571100,Key Laboratory for Crop Breeding of Hainan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land ConservationHainan,Ministry of Agriculture,Hainan Haikou,571100

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摘要:

以海南省海口市三江农场为研究区域，采集并化验海水倒灌后土壤样品191份，利用地统计学方法和空间插值法对区域土壤盐分空间变异特征进行了研究。结果表明：①4个土层中土壤盐分的均值最大的为0 ~ 5 cm土层，土壤盐分平均含量达到9.63 g/kg，最小的是20 ~ 40 cm土层，盐分平均含量仅为4.36 g/kg；②4个土层中第一层(0 ~ 5 cm)土壤盐分含量属弱相关性，第四层(20 ~ 40 cm)土层属于剧烈空间自相关性；③各土层土壤盐分分布格局差异明显，含盐量 < 1 g/kg的各土层均没有分布；含盐量1 ~ 3和3 ~ 5 g/kg两个级别随着土层深度的增加面积逐渐增大，> 9 g/kg的级别则面积逐渐减少。不同深度土壤层土壤盐分含量差异明显，空间变异特征各不相同，总体呈现土壤盐分表聚特征。

Abstract:

Characteristics of the soil salinity of the SanJiang farm in Haikou city was studied by using geostatistics and spatial interpolation methods on the bases of collecting and measuring soil samples with seawater intrusion. The results showed that the maximum mean soil salinity was 9.63 g/kg happened in 0–5 cm layer, and the minimum one was 4.36 g/kg, happened in 20–40 cm layer. The 0–5 cm layer was a weak correlation in soil salt content while the 20–40 cm layer was intense spatial correlation. The distribution pattern of soil salinity had obvious difference between different layers, and no layer with less than 1 g/kg of salt content. With the increase of soil depth, the areas of 1–3 g/kg and 3–5 g/kg salt contents increased gradually, while the area of greater than 9 g/kg salt content reduced. The differences of soil salt contents in different soil depths were obvious, and spatial variability were also different, generally there is a surface accumulation of salt.

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张冬明,张文,郑道君,吉清妹,吴宇佳,潘孝忠,符传良,王钟友,谢良商.海水倒灌农田土壤盐分空间变异特征[J].土壤,2016,48(3):621-626. ZHANG Dongming, ZHANG Wen, ZHENG Daojun, JI Qingmei, WU Yujia, PAN Xiaozhong, FU Chuanliang, WANG Zhongyou, XIE Liangshang. Spatial Variability of Surface Soil Salinity of Farmland by Seawater[J]. Soils,2016,48(3):621-626

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收稿日期:2015-05-25
最后修改日期:2015-11-20
录用日期:2015-12-16
在线发布日期: 2016-06-01
出版日期: 2016-06-25

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