生态学杂志2024，Vol.43Issue(3)：656-664,9.DOI:10.13292/j.1000-4890.202403.013
有机肥和套种对干热区火龙果土壤微生物特性和产量、品质的影响
Effects of organic fertilizer and intercropping on soil microbial characteristics and yield and quality of red pitaya in dry-hot region
摘要
Abstract
The objective of this study was to investigate the advantages of applying organic fertilizer and intercrop-ping on the planting of red pitaya(Hylocereus costaricensis cv.'Tainong No.2').A field experiment was carried out to examine the effects of organic fertilizer application rate(F0:0 t·hm-2 and F20:20 t·hm-2)and intercrop-ping method[MP:monoculture pitaya,IP:pitaya intercropping peanut(Arachis hypogaea)and IS:pitaya inter-cropping soybean(Glycine max)]on soil microbial abundance,soil microbial biomass and soil enzyme activity,as well as the yield and quality in red pitaya orchard in a dry-hot region.The relationship between the yield and quality of red pitaya and soil microbial characteristics were also analyzed.The results showed that compared with F0 treat-ment,F20 treatment significantly increased the abundance of soil bacteria,fungi,actinomycetes and microbial bio-mass carbon,nitrogen and phosphorus,enhanced the activities of soil invertase,urease,acid phosphatase and catalase,and improved the yield and quality of red pitaya.Compared with MP treatment,IP and IS treatment sig-nificantly increased soil microbial abundance,microbial biomass nitrogen and the activities of invertase and urease under F0 and F20 conditions;while IP and IS treatments significantly increased soil microbial biomass carbon,phos-phorus and acid phosphatase activity only under F20 condition.Intercropping significantly increased the fruit yield of red pitaya.IP and IS treatment increased yield by 48.48％and 42.20％under F0 condition,and increased by 25.37％and 29.82％under F20 condition,respectively,when compared with MP treatment.IP and IS treatments significantly increased soluble sugar and vitamin C content with F0 conditions,but significantly increased vitamin C,soluble solids and protein content with F20 conditions.Yield and quality of red pitaya were significantly positively correlated with soil microbial abundance,soil microbial biomass,and soil enzyme activity.The correlation between soluble sugar content and soil catalase activity was not significant.Therefore,the application of organic fertilizer and intercropping peanut or soybean can enhance soil microbial activity,thus improving the yield and quality of red pitaya in dry-hot region.关键词
红心火龙果/套种/有机肥/土壤微生物/土壤酶活性/产量Key words
red pitaya/intercropping/organic fertilizer/soil microorganisms/soil enzyme activity/yield引用本文复制引用
李义林,李坤,李建查,潘志贤,史亮涛,刘小刚,方海东,岳学文..有机肥和套种对干热区火龙果土壤微生物特性和产量、品质的影响[J].生态学杂志,2024,43(3):656-664,9.基金项目
云南省农业科学院热区生态农业研究所人才培养项目(2022RQS002)、云南省重点研发计划项目(2019BC001)、金沙江流域重点地区自然资源综合调查(ZD20220128)资助. （2022RQS002）
