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Effects of Plant Growth Promoting Rhizobacteria Serratia plymuthica A21-4 on Cucumber Growth and Soil Rhizosphere Microecology |
DING Fang-li1,LI Man2,LIU Dong-ping1,ZHANG Zhong-liang1,SUN Zhi-qiang2,PIAO Feng-zhi2*,SHEN Shun-shan1* |
(1College of Plant Protection,Henan Agricultural University,Zhengzhou 450002,Henan,China;2College of Horticulture,Henan Agricultural University,Zhengzhou 450002,Henan,China) |
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Abstract In order to investigate the effect of Serratia plymuthica A21-4 on cucumber growth and
rhizosphere soil microecology,A21-4 suspension was applied to rhizosphere soil of cucumber.The results showed
that the treatment of A21-4 could remarkably promote the cucumber growth and development both at seedling and
field stages,improve root system activity,increase cucumber yield and quality.Compared with the control,
treatment of A21-4 had increased cucumber yield by 32.22%,and the contents of protein,soluble sugar,and VC
were significantly increased.At the same time,A21-4 treatment could remarkably adjust cucumber rhizosphere
soil,and significantly increase activities of urease,phosphatase,sucrase and catalase in cucumber rhizosphere
soil.Besides,A21-4 treatment could increase the amount of bacteria and antinomycetes in cucumber rhizosphere
soil,and the available contents of N,P and K there.
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Received: 04 December 2017
Published: 05 February 2018
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