Effects of Arbuscular Mycorrhizal Fungus(AMF) in rhizosphere soil of cucumber under continuous cropping

TANG Yanling; LI Jie; CAI Yuxin; ZHAO Xiushan; ZHAO Xiaobin; SHI Xuanjie

doi:10.3969/j.issn.1673-2871.2018.02.004

Abstract：To evaluate the effects of the arbuscula mycorrhizal fuagi(AMF) Glomus mosseae in soil of cucumber under different continuous cropping years and provide theoretical basis for the AMF alleviating continuous cropping obstacle on cucumbers,the changes of soil physical and chemical properties,soil microbial quantity and soil enzyme were analyzed after the application of AMF on 1 year,3 years and 5 years continuous cropping soil.The results showed that the soil bulk density decreased and the soil mass granules increased significantly,and the soil mass granules was increased by 8.1％ compared with the control group after treated by AMF with soil under 3 years continuous cropping.There was no obvious difference between alkali nitrogen,available potassium and organic matter,but available phosphorus was 317.9 mg· kg-1,and it was 33.5％ lower than the control group in the 5 years continuous cropping soil.The quantity of soil bacteria and fungi were significantly different from that of the control group.The quantity of bacteria and fungi in continuous cropping soil for 5 years after treated by AMF were 2.2× 107 cfu· g-1 and 1.8× 107 cfu· g-1 respectively,which increased by 2.1 times and 6.2 times compared with CK.The activities of urease,phosphatase and sucrose enzyme in soil were also improved significantly.This study showed that the continuous cropping obstacle could be effectively alleviated by applying arbuscula mycorrhizal fungi(AMF) Glomus mosseae on cucumbers,which was very useful for actual production..