不同海拔对野生猕猴桃土壤酶活性和养分的影响  

Effects of Different Altitudes on Soil Enzyme Activity and Nutrients of Wild Kiwifruit

作　　者：苏效兰 朱太富 李欣[1] 杨琪 朱兴赛 李金凤 王连春 Su Xiaolan;Zhu Taifu;Li Xin;Yang Qi;Zhu Xingsai;Li Jinfeng;Wang Lianchun(College of Horticulture and Landscape,Southwest Forestry University,Kunming 650224,China;College of Forestry,Southwest Forestry University,Kunming 650224,China;Yulin Vocational and Technical College,Yulin 719000,China)

机构地区：[1]西南林业大学园林园艺学院,云南昆明650224 [2]西南林业大学林学院,云南昆明650224 [3]榆林职业技术学院,陕西榆林719000

出　　处：《中国野生植物资源》2024年第4期53-58,82,共7页Chinese Wild Plant Resources

基　　金：云南猕猴桃特有种质资源收集与评价(219236);22YY高原特色经济林资源培育与利用(110822079)。

摘　　要：目的:探讨不同海拔对野生猕猴桃根际土壤酶活性及土壤养分的影响。方法:以不同海拔野生猕猴桃根际土壤为研究对象,测定土壤碳、氮、磷含量及与土壤碳、氮、磷循环相关酶活性,分析土壤酶活性和养分差异。结果:随海拔升高,土壤中的酸性磷酸酶(AcP)、N-乙酰-β-D-氨基葡萄糖苷酶(NAG)+亮氨酸氨基肽酶(LAP)活性呈下降趋势,β-葡萄糖苷酶(β-GC)活性呈上升趋势;土壤氮、磷含量随海拔升高先升高后降低,在海拔1770 m处有最大值,且该海拔处土壤水稳性大团聚体的质量分数显著高于其他海拔;冗余分析表明海拔、土壤有效磷和土壤温度是影响土壤酶活性及酶化学计量的重要因子。结论:海拔引起土壤结构的改变从而调节土壤中酶活性机制,进而影响土壤肥力。Objective:To investigat the effects of different altitudes on soil enzyme activity and soil nutrients in the rhizosphere of wild kiwifruit.Methods:The rhizosphere soil of wild kiwifruit at different altitudes was used as the research object to determine the soil carbon,nitrogen and phosphorus contents and the enzyme activities related to the soil carbon,nitrogen and phosphorus cycle,and to analyse the differences in soil enzyme activities and nutrients.Results:As altitude increased,the activities of acid phosphatase(AcP)and N-acetyl-β-D-glucosaminidase(NAG)+leucine aminopeptidase(LAP)in the soil showed a decreasing trend,butβ-glucosidase(β-GC)activity showed an increasing trend.The content of soil nitrogen and phosphorus increased first and then decreased with altitude,and there was a maximum value at the altitude of 1770 m.The mass fraction of soil water-stable macroaggregates at this altitude was significantly higher than that at other altitudes.Redundancy analysis showed that altitude,soil effective phosphorus and soil temperature were important factors affecting soil enzyme activity and enzyme stoichiometry.Conclusion:Altitude caused changes in soil structure,which affectd soil fertility and regulated the mechanism of enzyme activity in soil.

关 键 词：野生猕猴桃 根际土壤 酶活性 环境因子 

分 类 号：S663.4[农业科学—果树学]