| 化肥对黑土不同粒级碳水化合物的影响 |
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| 引用本文： | 闫颖,陈盈,何红波,解宏图,白震,李晓波,田秋香,张旭东.化肥对黑土不同粒级碳水化合物的影响[J].土壤通报,2012(1):37-41. |
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| 作者姓名： | 闫颖 陈盈 何红波 解宏图 白震 李晓波 田秋香 张旭东 |
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| 作者单位： | 中国科学院沈阳应用生态研究所陆地生态过程重点实验室;沈阳农业大学土地与环境学院;辽宁省稻作研究所;辽宁沈阳农田生态系统国家野外科学观测研究站 |
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| 基金项目： | 国家自然科学基金项目(41101274);中国博士后科学基金项目(20090451286);王宽诚教育基金项目资助 |
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| 摘 要： | 本文采集公主岭市长期定位监测基地不施肥和施用不同化肥的黑土,通过超声波分散-离心分离得到细黏粒(<0.2μm)、粗黏粒(0.2～2μm)、粉粒(2～53μm)、细砂粒(53～250μm)、粗砂粒(250～2000μm)5个颗粒级别,分析全土及不同粒级中土壤碳水化合物并进行含量与分布的比较。结果表明,黑土中不同粒级碳水化合物库的性质差异显著,碳水化合物多集中在粉+黏粒中;长期施用化肥后,黑土全土及各粒级碳水化合物库大小和浓度基本上没有变化;粗砂粒级(Gal+Man)(:Ara+Xyl)下降,表明该粒级中植物来源碳水化合物所占比重有所增加,暗示出粗砂粒级对施肥措施更为敏感。
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| 关 键 词： | 化肥 黑土 粒级 碳水化合物 |
Effect of Chemical Fertilizer Application on the Carbohydrates in Bulk Black Soil and Particle-size Fractions |
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| YAN Ying,CHEN Ying,HE Hong-bo,XIE Hong-tu,BAI Zhen,LI Xiao-bo,TIAN Qiu-xiang,ZHANG Xu-dong.Effect of Chemical Fertilizer Application on the Carbohydrates in Bulk Black Soil and Particle-size Fractions[J].Chinese Journal of Soil Science,2012(1):37-41. |
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| Authors: | YAN Ying CHEN Ying HE Hong-bo XIE Hong-tu BAI Zhen LI Xiao-bo TIAN Qiu-xiang ZHANG Xu-dong |
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| Institution: | 1,4(1.Key Laboratory of Terrestrial Ecological Process,Institute of Applied Ecology,Chinese Academy of Science,Shenyang 110016,China;2.College of Soil and Environment,Shenyang Agricultural University,Shenyang 110161,China;3.Liaoning Rice Research Institute Shenyang 110010,China;4.National Field Observation and Research Station of Shenyang Agroecosystems,Shenyang 110016,China.) |
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| Abstract: | The black soil fertilized with different chemical fertilizers for 21 years was sampled from Gongzhuling long-term located station.Fine clay(< 0.2 μm),coarse clay(0.2-2 μm),silt(2-53 μm),fine sand(53-250 μm) and coarse sand(250-2000 μm) fractions were obtained by ultrasonic dispersion,centrifugation and wet sieving separation.Carbohydrates were detected in bulk soil and particle-size fractions.The results showed that there was a large variation among the size separates in black soil carbohydrate pool.Clay plus silt fractions comprised major carbohydrates pool in the soils studied and contained about 70% of the total carbohydrate.In general the application of chemical fertilizers had no clear effect on either neueral sugar accumulation or distribution in size fractions.The decrease of the(Gal+Man):(Ara+Xyl) ratio in coarse fraction after the application of chemical fertilizers indicated a higher contribution of plant sugars to the polysaccharide pool,suggesting that coarse sand fraction was more sensitive to fertilization than the other fractions. |
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| Keywords: | Chemical fertilizer Black soil Particle size fractions Carbohydrate |
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