水土保持通报2012，Vol.32Issue(1)：106-110,170,6.
泥质海岸盐碱地刺槐-杨树混交林改土效果研究
Soil Amelioration Effects of Mixed Plantations of Robinia Pseudoacacia and Populus Liaoningensis in Saline-alkali Soils Along Muddy Seacoast
摘要
Abstract
Soil amelioration effects resulted from salt reduction by the three plantations of pure Robinia pseudoacacia,pure Populus liaoningensis,and mixed P.liaoningensis and R.pseudoacacia were studied in raised fields established by soil preparation engineering measures in saline-alkali soils along muddy seacoast of Northern China.Results showed that the three plantations were almost closed after 11 years.The reservation rates were 63%~72% and shade densities were 0.6~0.7.The height and DBH of the mixed plantation were higher than those of the two pure plantations.The desalination effects of the three planting patterns were observed within 70 cm of soil surface and soil nutrient deficiency was formed between 50 and 70 cm below soil surface.The mixed plantation increased soil organic matter content on the forest land.Within 100 cm of soil surface,the distribution rhythms of total N in soil profiles were similar to those of organic matter.The variation of the contents of total P in the three plantations was not significant.On the whole,the total amount of phosphorus was deficient and its efficiency was low.Factor analysis indicated that soil amelioration effects for the mixed plantations of P.liaoningensis and R.pseudoacacia were better than those of pure plantations,which could enhance the fertility status of saline-alkali soils along the muddy seacoast and might be applied in practice as a promising afforestation model.关键词
杨树/刺槐/混交林/盐碱地/改土效果Key words
Populus liaoningensis/Robinia pseudoacacia/mixed plantation/saline-alkali soil/soil amelioration effect分类
农业科技引用本文复制引用
魏忠平,范俊岗,潘文利,陈罡,刘红民..泥质海岸盐碱地刺槐-杨树混交林改土效果研究[J].水土保持通报,2012,32(1):106-110,170,6.基金项目
国家“十一五”科技支撑计划项目“北方泥质海岸防护林体系构建技术试验示范” （）
国家林业局“948”项目“抗寒耐盐碱美国白蜡优良种源及盐碱地土壤改良技术引进” （）
辽宁省重大科技攻关计划项目“沿海经济带及西北风沙区防护林体系建设技术研究与示范” （）
