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| 水耕年限对黄棕壤发育的水稻土的表面化学性质的影响 | |
| 引用本文： | 姜 军,赵安珍,杨 聪,朱大威,徐仁扣.水耕年限对黄棕壤发育的水稻土的表面化学性质的影响[J].土壤,2011,43(6):987-992. |
| 作者姓名： | 姜 军 赵安珍 杨 聪 朱大威 徐仁扣 |
| 作者单位： | 1. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008 2. 南京林业大学森林与环境学院,南京,210037 3. 江苏省农业科学院农业资源与环境研究所,南京,210014 |
| 基金项目： | 江苏省自然科学基金项目（BK2008498）和中国科学院创新基金项目（KZCX2-YW-Q10-3，ISSASIP0711）资助 |
| 摘 要： | 利用采自江苏省农业科学院果园的旱地黄棕壤(对照)和由黄棕壤发育水耕20年和60年的水稻土,研究了土壤黏粒和粉粒的矿物组成,胶体和土体的化学性质随水耕年限的变化.粉粒的X-射线衍射图谱表明,3种供试土壤发育母质相似,胶体的矿物组成随水耕年限的变化不大.动电电位和表面负电荷的测定结果也表明,胶体表面化学性质未发生明显变化.随水耕年限增加,土壤黏粒含量降低,导致土体性质发生明显变化,土壤CEC和结构电荷量随水耕年限增加显著减少. |
| 关 键 词： | 水耕年限 水稻土 胶体 表面性质 |
Effects of cultivation periods on surface chemical properties of paddy soils derived from yellow brown soil |
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| JIANG Jun,ZHAO An-zhen,YANG Chong,ZHU Da-wei,XU Ren-kou.Effects of cultivation periods on surface chemical properties of paddy soils derived from yellow brown soil[J].Soils,2011,43(6):987-992. | |
| Authors: | JIANG Jun ZHAO An-zhen YANG Chong ZHU Da-wei XU Ren-kou |
| Institution: | 1(1 State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science,Chinese Academy of Sciences),Nanjing 210008,China; 2 College of Forest and Environment,Nanjing Forestry University,Nanjing 210037,China; 3 Instiute of Agriculture Resources and Environment,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China) |
| Abstract: | The mineralogical and surface chemical properties of two paddy soils and one yellow brown soil and their colloids were investigated to elucidate the effects of water cultivating period on these properties of the soils. The soils were collected from the experimental plots in Jiangsu Academy of Agricultural Sciences. The results showed that there were tiny differences of mineral compositions in silt fractions among three soils, suggesting that the investigated soils developed form homogeneous parent materials. The electrokinetic potential and negative surface charge of soil colloids did not change with the age of rice cultivation significantly, which indicated that the surface chemical properties of colloids were similar for these soils. However, the clay fraction for paddy soils decreased with the age of rice cultivation. Subsequently, the soil properties changed markedly. Both CEC and the values of structural negative surface charge decreased with the age of rice cultivation significantly. |
| Keywords: | Age of rice cultivation Paddy soils Colloids Surface chemical properties |
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