Effects of Different Tree Species and Proportions on Soil Fertility Quality in Eucalyptus Mixed Plantation

作     者：Haitao JIANG Nianyong ZHAN Lin JIANG Heng QIN Jianying DENG Yuanli ZHU Junyu ZHAO Jian TANG 

作者机构：Guangxi State-owned Weidu Forest FarmLaibin 530229China Guangxi State-owned Qipo Forest FarmNanning 530225China Guangxi Zhuang Autonomous Region Forestry Research Institute/Guangxi Research and Development Center for New Forestry FertilizerNanning 530002China 

出 版 物：《Meteorological and Environmental Research》 (气象与环境研究（英文版）)

年 卷 期：2022年第13卷第3期

页      面：74-77,81页

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

基　　金：Supported by Guangxi Forestry Science and Technology Promotion Demonstration Project (GUILINKEYAN23  GUILINKEYAN6) 

主　　题：Minimum data set Membership function Mixed plantation Sustainable management 

摘      要：In order to study the effects of Eucalyptus mixed plantation with different mixed tree species and mixed proportion on soil nutrient accumulation and fertility quality, Eucalyptus-Mytilaria laosensis and Eucalyptus-Magnolia sumatrana mixed plantations in Guangxi State-owned Qipo Forest Farm were selected as the research objects. Based on 15 conventional soil fertility indexes, the minimum data set and membership function method were used to evaluate the soil fertility quality of mixed plantations with different structures. The results showed that compared with pure forest, the soil organic matter, total nitrogen, total potassium, alkali hydrolyzable nitrogen, available phosphorus, available potassium and other nutrients of mixed plantations with different treatments were significantly increased, and the contents of Cu and Zn in trace elements were most significantly increased. Compared with pure forest, the soil fertility quality of mixed plantations with different structures was significantly improved. The treatment with the highest soil fertility quality was 25% of Eucalyptus-M. sumatrana mixed plantation. When formulating production and management strategies, it can refer to construction measures of the mixed plantation to ensure the sustainability of forest soil fertility, and promote the healthy and sustainable development of Eucalyptus plantation and downstream industries in Guangxi.