| 江西省雨水、灌溉水及渗漏水中的硫对土壤硫的影响 |
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| 作者姓名： | LIU Chong-Qun CAO Shu-Qing XU Jun-Xiang |
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| 作者单位： | InstituteofSoilScience,theChineseAcademyofSciences,P.O.Box821,Nanjing210008,China |
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| 摘 要： | Ten rainfall and irrigation water-collecting posts were set up in different ecotype districts of Jiangxi Province,China,to quarterly measure S content in rainfall and irrgation water.A rasinwater chemical composition-collecting device was used to collect the sulphur in rainfall,and the amount of sulphur adsorbed on the resin column in the device was determined.The soil percolating water was gathered using 6 lysimeters built up according to the profile sequence of the red soil derived from red sandstone and the red soil derived from Quaternary red clay,separately.On the lysimeters peanuts,soybean and radish were grown in rotation.Two treatments were designed:without S addition and with S additin at a rate of 14kg S ha^-1,The SO4^2- contents in rainfall,irrigation water and soil percolating water were determined by the turbidimetry.The results in 1997 showed that the average annual S content in rainwater ws 28.13kg S ha^-1.the average S content in irrigation water was 1.7mg S L^-1,and the average content of SO4^2- in soil percolation water was 2.30kg Sha^-1 year^-1 and 4.70 kg Sha^-1 year^-1 in treatments without and with sulphur application,respectively,In Jiangxi Province,apart from the losses by runoff and leaching,the sulphur in rainfall avaliable to crops is 7.3kg S ha^-1 year^-1 and additional S application is required.When rice is grown.however,irrigation water can suply 6.9kg S ha^-1,which,along with the sulphur in rainfall,cal almost meet the S requirement of one cropping of rice.
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| 关 键 词： | 灌溉水 江西 降水 土壤渗水性 硫磺 氮 磷 硫 |
Effect of sulphur in rainfall, irrigation water and percolating water on soil sulphur in Jiangxi Province |
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| LIU Chong-Qun,CAO Shu-Qing,XU Jun-Xiang.Effect of sulphur in rainfall, irrigation water and percolating water on soil sulphur in Jiangxi Province[J].Pedosphere,2000,10(2):177-182. |
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| Authors: | LIU Chong-Qun CAO Shu-Qing and XU Jun-Xiang |
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| Institution: | InstituteofSoilScience,theChineseAcademyofSciences,P.O.Box821,Nanjing210008,China |
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| Abstract: | Ten rainfall and irrigation water-collecting posts were set up in different ecotype districts of Jiangxi Province, China, to quarterly measure S content in rainfall and irrigation water. A rainwater chemical composition-collecting device was used to collect the sulphur in rainfall, and the amount of sulphur adsorbed on the resin column in the device was determined. The soil percolating water was gathered using 6 lysimeters, built up according to the profile sequence of the red soil derived from red sandstone and the red soil derived from Quaternary red clay, separately. On the lysimeters peanuts, soybean and radish were grown in rotation. Two treatments were designed: without S addition and with S addition at a rate of 14 kg S ha-1. The SO42- contents in rainfall, irrigation water and soil percolating water were determined by the turbidimetry. The results in 1997 showed that the average annual S content in rainwater was 28.13 kg S ha-1, the average S content in irrigation water was 1.7 mg S L-1, and the average content of SO24- in soil percolation water was 2.30 kg S ha-1 year-1 and 4.70 kg S ha-1 year-1 in treatments without and with sulphur application, respectively. In Jiangxi Province, apart from the losses by runoff and leaching, the sulphur in rainfall available to crops is 7.3 kg S ha-1 year-1 and additional S application is required. When rice is grown, however, irrigation water can supply 6.9 kg S ha-1, which, along with the sulphur in rainfall, can almost meet the S requirement of one cropping of rice. |
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| Keywords: | irrigation water Jiangxi Province rainfall soil percolation water sulphur |
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