不同解磷菌剂对美国山核桃根际微生物和酶活性的影响

doi:10.11707/j.1001-7488.20120217

Abstract

Abstract:

A potting experiment was conducted to evaluate effects of three phosphate-solubilizing bacteria (PSB) (Pseudomonas chlororaphis, P. fluorescens, Bacillus cereus) and their mixture on rhizosphere soil microorganism and enzyme activities at three growth stages of pecan (Carya illinoensis) seedlings subjected to three application levels of calcium-superphosphate. Results showed that:Inoculation of the three PSB and their mixture increased the amounts of rhizosphere bacteria and actinomyces, reduced the amounts of rhizosphere fungi, and enhanced activities of phosphatase and urease. However, the effects on rhizosphere microorganism and enzyme activities decreased progressively with increase of calcium-superphosphate content. The bacteria mixture was stronger effects than that of any single bacterium, and brought about the most rhizosphere bacteria and actinomyces, the lest rhizosphere fungi, and the highest activities of phosphatase and urease in all three application levels of calcium-superphosphate compared to inoculation with any single bacteria.

Key words: phosphate-solubilizing bacteria, rhizosphere microorganism, enzyme activity, pecan

CLC Number:

S718.8

Yu Xuan;Zhu Tianhui;Liu Xu. Effects of Different Phosphate-Solubilizing Bacteria on Rhizosphere Microorganism and Enzyme Activities of Pecan Seedlings[J]. Scientia Silvae Sinicae, 2012, 48(2): 117-123.

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Effects of Different Phosphate-Solubilizing Bacteria on Rhizosphere Microorganism and Enzyme Activities of Pecan Seedlings

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