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| 长期施肥后简育湿润均腐土中磷素形态特征的研究 | |
| 引用本文： | 林德喜,范晓晖,胡锋,杨林章,韩晓增. 长期施肥后简育湿润均腐土中磷素形态特征的研究[J]. 土壤学报, 2006, 43(4): 605-610 |
| 作者姓名： | 林德喜 范晓晖 胡锋 杨林章 韩晓增 |
| 作者单位： | 1. 南京农业大学资源与环境科学学院,南京,210095;福建农林大学资源与环境学院,福州,350002 2. 中国科学院南京土壤研究所,南京,210008 3. 南京农业大学资源与环境科学学院,南京,210095 4. 中国科学院东北地理与农业生态研究所,长春,130012 |
| 基金项目： | 中国科学院知识创新工程项目;国家研究发展基金;国家自然科学基金 |
| 摘 要： | 对黑土（简育湿润均腐土）长期定位施肥15年后土壤磷素形态进行分析研究。结果表明：土壤中积累的Al-P、Ca2-P量与施磷量成正相关；只施NK能促进植物对Ca8-P的吸收；闭蓄态磷（Oc-P）含量均较低。施磷肥能增加黑土Fe-P含量，却未能增加Ca10-P含量。黑土各形态无机磷的含量大小顺序为：Fe-P〉Ca10-P〉Al-P〉Cas-P〉Ca2-P〉Oc-P。施磷能增加土壤中有机磷（O-P）的含量，但不能增加土壤有机质含量。土壤有机质含量均有不同程度的下降。本试验黑土中施入N112．5kg hm^-2a^-1和P20kg hm^-2a^-1能保持土壤中无机磷（I-P）平衡。 |
| 关 键 词： | 长期施肥 黑土 磷素形态 |
| 收稿时间： | 2005-04-11 |
| 修稿时间： | 2005-04-112005-12-26 |
FORMS OF PHOSPHORUS IN HAPLI-UDIC ISOHUMOSOLS SOILS AFTER LONG-TERM FERTILIZATION |
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| Lin Dexi,Fan Xiaohui,Hu Feng,Yang Linzhang and Han Xiaozeng. FORMS OF PHOSPHORUS IN HAPLI-UDIC ISOHUMOSOLS SOILS AFTER LONG-TERM FERTILIZATION[J]. Acta Pedologica Sinica, 2006, 43(4): 605-610 | |
| Authors: | Lin Dexi Fan Xiaohui Hu Feng Yang Linzhang Han Xiaozeng |
| Affiliation: | 1 College of Natural Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China;2 Institute of Soil Science, Chinese Academy of Siences , Nanjing 210008, China;3 College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China;4 Northeast Institute of Geography and Agricultural Ecology, Changchun 130012, China |
| Abstract: | Change in forms of phosphorus in a typical Hapli-Udic Isohumosols(black soil) under a 15-year long-term fertilization experiment was studied.Results show that accumulation of soil Al-P and Ca_(2)-P was positively related to P application rate;application of NK stimulated the plant to absorb Ca_(8)-P; and the concentration of Occluded-P(Oc-P) was decreased.P application did increase the content of Fe-P in the black soil,but did not the content of Ca_(10)P.In terms of content in the black soil,the various forms of in-organic P were in the order of Fe-P>Ca_(10)-P>Al-P>Ca_(8)-P>Ca_(2)-P>O-P.P fertilizer application increased organic P in the soil,but it did not increase the content of organic matter.Instead,the content of organic matter dropped to a varying degree in different treatments.Application of N 112.5 kg hm~(-2) a~(-1)and P 20 kg hm~(-2) a~(-1) could keep I-P in balance in the soil. |
| Keywords: | Long-term fertilization Hapli-Udic Isohumosol Forms of phosphorus |
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