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应用生态学报 ›› 2003, Vol. ›› Issue (5): 781-784.

• 研究论文 • 上一篇    下一篇

不同磷源对红三叶草根际和菌根际磷酸酶活性的影响

宋勇春, 冯固, 李晓林   

  1. 中国农业大学植物营养系, 北京 100094
  • 收稿日期:2001-03-01 修回日期:2001-06-07 出版日期:2003-05-15
  • 通讯作者: 李晓林
  • 基金资助:
    国家自然科学基金(40071050);国家重点基础研究发展规划资助项目(G1999011807)

Effects of different P sources on phosphatase activity of mycorrhizosphere of red clover inoculated with AMF

SONG Yongchun, FENG Gu, LI Xiaolin   

  1. Department of Plant Nutrition, China Agricultural University, Beijing 100094, China
  • Received:2001-03-01 Revised:2001-06-07 Online:2003-05-15

摘要: 以红三叶草为研究对象,利用三室培养系统,在接种菌根真菌(Glomus mosseae)的条件下研究了不同磷源对根际和菌根际磷酸酶活性的影响.植株生长8周后收获并测定根室、菌丝室的土壤磷酸酶活性、植株干重及含磷量.结果表明,根室酸性磷酸酶活性比碱性磷酸酶活性更高,接种条件下二者都稍有增加,特别是在供给有机磷(植酸钠)的条件下明显增加了菌丝室土壤磷酸酶活性.接种菌根真菌显著增加了植株干重、磷含量和总磷吸收.施用磷酸二氢钾(KH2PO4)时菌丝吸磷量占吸磷总量的43.1%,而施用植酸钠(Naphytate)时菌丝吸磷量占吸磷总量的60.8%.

Abstract: Experiments were carried out to study the effects of Psources on phosphatase activity of rhizosphere and mycorrhizosphere of red clover inoculated with Glomus mosseae, and cultural system with three compartments was applied.The plants were harvested after 8 weeks,and measured for dry weight and Pcontents as well as soil phosphatase activity of root and hyphal compartment. The results showed that acid phosphatase activity was higher than alkaline phosphatase activity, and both of them were increased slightly after inoculation, especially supplied with organic phosphorus (Na phytate). Acid phosphatase activity was higher than alkaline phosphatase in the mycorrhizosphere of all inoculated treatments.The dry weight, Pcontent and total Puptake of the plants increased significantly after inoculating mycorrhizal fungus.The amount of Puptake by hyphae accounted for 43.1% of total Puptake of plants under appling KH2PO4, while the value was 60.8% under appling Na phytate.

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