| 红三叶草丛枝菌根对有机磷的吸收 |
| |
| 引用本文： | SONG Yong-Chun,LI Xiao-Lin,P. CHRISTIE. 红三叶草丛枝菌根对有机磷的吸收[J]. 土壤圈, 2002, 12(2): 103-110 |
| |
| 作者姓名： | SONG Yong-Chun LI Xiao-Lin P. CHRISTIE |
| |
| 作者单位： | SONG Yongchun,LI XIAOLIN(Department of Plant Nutrition, College of Agricultural Resources and Environmental Sciences, China Agricultural University, Beijing 100094 China);P.CHRISTIE(Department of Agricultural and Environmental Science, The Queen's University of Belfast, Newforge Lane Belfast, BT9 5PX (UK)) |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划)，the Joint Open Laboratory of Soil and Environment between the Institute of Soil Science of the Chinese Academy of Sciences and Hong Kong Baptist University |
| |
| 摘 要： | The capacities of two arbuscular mycorrhizal (AM) fungi, Glomus mosseae and Glomus versderme, tomineralize added organic P were studied in a sterilized calcareous soil. Mycorrhizal (inoculated with either of the AM fungi) and non-mycorrhizal red clover (Trghlium pmtense L.) plants were grown for eight weeksin pots with upper root, central hyphal and lower soil compartments. The hyphal and soil compartmentsreceived either organic P (as Na-phytate) or inorganic P (as KH2PO4) at tbe rate of 50 mg P kg-1. No P wasadded to the root compartments. Control pots received no added P. Yields were higher in mycorrhizal than innon-mycorrhizal clover. Mycorrhizal inoculation doubled shoot P concentration and more than doubled total P uptake of plaflts in P-amended soil, irrespective of the form of applied P. The mycorrhizal contributionto inorganic P uptake was 80% or 76% in plants inoculated with G. mosseae or G. verefforme, respectively. Corresponding values were 74% and 82% when Na-phytate was applied. In the root compartments of the mycorrhizal treatments, the proportion of root length infected, hyphal length density and phosphatase activity were all higher when organic P was applied than when inorganic P was added.
|
| 关 键 词： | arbuscular pcorrhiza organic P P uptake red clover |
Uptake of organic phosphorus by arbuscular mycorrhizal red clover |
| |
| SONG Yong-Chun,LI Xiao-Lin and P. CHRISTIE. Uptake of organic phosphorus by arbuscular mycorrhizal red clover[J]. Pedosphere, 2002, 12(2): 103-110 |
| |
| Authors: | SONG Yong-Chun LI Xiao-Lin P. CHRISTIE |
| |
| Affiliation: | Department of Plant Nutrition, College of Agricultural Resources and Environmental Sciences, China Agricultuml University, Beijing 100094 (China);Department of Plant Nutrition, College of Agricultural Resources and Environmental Sciences, China Agricultuml University, Beijing 100094 (China);Department of Agricultural and Environmental Science, The Queen's University of Belfast, Newforge Lane Belfast, BT9 5PX (LIK) |
| |
| Abstract: | The capacities of two arbuscular mycorrhizal (AM) fungi, Glomus mosseae and Glomus versiforme, to mineralize added organic P were studied in a sterilized calcareous soil. Mycorrhizal (inoculated with either of the AM fungi) and non-mycorrhizal red clover (Trifolium pratense L.) plants were grown for eight weeks in pots with upper root, central hyphal and lower soil compartments. The hyphal and soil compartments received either organic P (as Na-phytate) or inorganic P (as KH2PO4) at the rate of 50 mg P kg-1. No P was added to the root compartments. Control pots received no added P. Yields were higher in mycorrhizal than in non-mycorrhizal clover. Mycorrhizal inoculation doubled shoot P concentration and more than doubled total P uptake of plants in P-amended soil, irrespective of the form of applied P. The mycorrhizal contribution to inorganic P uptake was 80% or 76% in plants inoculated with G. mosseae or G. versiforme, respectively.Corresponding values were 74% and 82% when Na-phytate was applied. In the root compartments of the mycorrhizal treatments, the proportion of root length infected, hyphal length density and phosphatase activity were all higher when organic P was applied than when inorganic P was added. |
| |
| Keywords: | arbuscular mycorrhiza organic P P uptake red clover |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《土壤圈》浏览原始摘要信息 |
|
点击此处可从《土壤圈》下载全文 |
|
