Effects of PGPR Strain A21-4 on Growth and Rhizosphere Soil Charactors of Pepper in Field

doi:10.16409/j.cnki.2095-039x.2016.01.013

Abstract

Abstract: Authors investigated the effects of PGPR strain A21-4 on growth and rhizosphere soil characters of pepper by measuring growth index, soil enzyme activity, available N, P and K content and microorganism quantity after watering peppers with A21-4 in field experiments. The results showed that inoculation with A21-4 significantly enhanced stem diameter, chlorophyll content and root activity of pepper in adult stage by 23.66%, 56.26% and 42.24%, respectively, compared with those under control. Protein, vitamin C and nitrate nitrogen contents were all significantly increased by 29.32%, 53.97% and 129.84%, respectively, in pepper fruits; The catalase, urease and phosphatase activities of rhizosphere soil were increased by 22.95%-32.31%, 24.32%-94.11% and 49.41%-271.74%, respectively. Available N, available P and available K contents were increased by 7.60%-49.25%, 7.24%-17.93% and 12.70%-25.61%, respectively. In addition, treatment of A21-4 promoted significantly the numbers of rhizosphere soil bacteria and actinomycetes, but significantly reduced the numbers of rhizosphere soil fungi.

Key words: PGPR, pepper, effect of growth promotion, soil microbial ecology, Serratia plymuthica

CLC Number:

S476

LÜ Yayou, YU Di, DING Fangli, PIAO Fengzhi, SHEN Shunshan. Effects of PGPR Strain A21-4 on Growth and Rhizosphere Soil Charactors of Pepper in Field[J]. journal1, 2016, 32(1): 86-92.

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