广西林业科学Issue(4)：357-364,8.
桉-草复合经营模式的土壤理化性质动态及关联分析
Correlation Analysis and Dynamic of Soil Physicochemical Properties under the Eucalyptus-grass Compound Management Models
摘要
Abstract
Based on 6 kinds of compound management mode about Eucalyptus interplanting grass ( Penn-isetum americanum × P. purpureum ) × Pennisetum purpureum, Tephrosia candida and Stylosanthes guianensis, using Eucalyptus pure forest as control, dynamic of main factors of soil physicochemical prop-erties in different soil layers of Eucalyptus-grass compound management models was analyzed, and the better model to improve the soil physicochemical properties was selected by the method of gray system. The results showed that during the same period of the same soil layer, the differences of soil bulk density, total porosity and capillary porosity, field capacity, organic matter, total N, P, K and available N, P, K among different models reached significant level ( P < 0. 05 ) or extremely significant level ( P<0. 01) . At the same period, all of the soil total porosity and capillary porosity, field capacity, organic matter, total N, available N, available P and available K of soil layer from 0cm to 20cm were greater than soil layer from 20cm to 40cm, while soil bulk density was opposite. As the change of planting peri-od, soil bulk density, capillary porosity, field capacity of all models at the same soil player were increas-ing, while soil total porosity decreased. Changing trends of the soil nutrient content in the different plant-ing patterns and different soil layers were different. The best model to improve the soil physical properties and soil nutrient content was A2, which was Eucalyptus (2m × 3m) + Tephrosia candida with the high-est upper and lower correlation.关键词
农林复合/土壤理化性质/桉树/牧草/灰色关联法Key words
agroforestry/soil physicochemical properties/Eucalyptus/grass/grey correlation分类
农业科技引用本文复制引用
韦铄星,刘晓蔚,刘雄盛,张烨,黄荣林,蒋燚..桉-草复合经营模式的土壤理化性质动态及关联分析[J].广西林业科学,2014,(4):357-364,8.基金项目
广西科学研究与技术开发计划项目(主席科技资金2012217-1) （主席科技资金2012217-1）
广西科学研究与技术开发计划项目(桂科攻1299001-1) （桂科攻1299001-1）
广西优良用材林资源培育重点实验室开放课题(14BO201) （14BO201）
