土壤2012，Vol.44Issue(6)：960-965,6.
延边地区三种类型植烟土壤酶活力、速效养分根际效应研究
Study on Tobacco Rhizosphere Effects of Soil Enzyme Activities and Available Nutrients in Three Soil Types in Yanbian
摘要
Abstract
In this study, three types of .soil and flue cured tobacco of Yanbian area with randomized block design in the field were used to investigate the activities of catalase, urease and invertase, and the contents of alkali-hydrolyzable N, available P and K in rhizosphere and non-rhizosphere soils, and pH values, soil enzymes and nutrients at different developmental stages of tobacco plant. Results indicated that the average activities of catalase, urease and invertase in rhizosphere soils for planting tobacco were 0.60U, 0.48U and 22.09U, respectively. The rhizosphere effect of soil enzyme were obvious different, i.e. catalase (R/S = 1.08)<urease (R/S =1.14)<invertas (R/S = 1.51). pH value and the contents of alkali-hydrolyzable N, available P and K of rhizosphere soils were 5.42, 72.52 mg/kg, 33.36 mg/kg and 402.04 mg/kg, respectively. The rhizosphere effect was in an order of pH(R/S = 0.91 )< alkali-hydrolyzable N (R/S =0.98) <available P (R/S =1.99) <available K (R/S =2.46). pH value and the contents of alkali-hydrolyzable N, available P and K. in rhizosphere and non- rhizosphere soils were in an order of dark brown soil > black sandy soil>albic Soil. Therefore, dark brown soil had higher rhizosphere effect and could provide more favorable environment including nutrition for planting tobacco, which might be one of the important reasons that dark brown earths was better than other two soils for tobacco growth.关键词
烤烟/土壤类型/土壤酶/速效养分/根际效应Key words
Flue-cured tobacco, Soil type, Soil enzyme, Available nutrient, Rhizosphere effect分类
农业科技引用本文复制引用
殷全玉,郭夏丽,赵铭钦,王岩..延边地区三种类型植烟土壤酶活力、速效养分根际效应研究[J].土壤,2012,44(6):960-965,6.基金项目
吉林省烟草工业有限责任公司重大科技攻关项目(JY2006012)资助. （JY2006012）
