福建农业学报Issue(7)：679-684,6.
不同类型茶园土壤氮素矿化特性及其与土壤性质的关系
Correlation between Nitrogen Mineralization and Properties of Various Types of Soils at Tea Plantations
摘要
Abstract
For this study ,5 types of soils at tea plantations ,i . e .,yellow ,red ,moist sandy ,alpine meadow and purple soils ,collected from Wuyishan City in Fujian were incubated at 28℃with a 60% water holding capacity for 35 days .The nitrogen (N) mineralization and its correlation with the properties of the soils were analyzed .A first‐order kinetic model derived from the experimental data was obtained:Ni= N0 (1-e-kt ) (R2 =0.65-0.98) ,where Ni is the cumulative mineralized N at incubation time t;N0 ,the potential mineralizable N pool;and k ,the first order rate constant .N0 for the soils ranged from 4.15 to 52.46 mg · kg -1 (averaging 33.22 mg · kg -1 );k from 0.019 to 0.343 mg · kg -1 · d-1 (averaging 0.15 mg · kg -1 · d-1 );N0 × k from 0.32 to 16.82 mg · kg -1 · d-1 (averaging 33.22 mg · kg -1 · d-1 );and the N mineralization rate (Nr ) from 2.32 to 6.00% (averaging 3.73% ) . All parameters of the N mineralization in the alpine meadow and yellow soils were significantly higher than those in the others .They were followed by the moist sandy and purple soils ,while the red soil was the lowest .△ N ,N0 ,k and N0 × k were significantly correlated with the soil organic carbon ,as well as the total N ,NH+4 ‐N and NO3-N . They also significantly correlated reversely with the soil bulk density ,but not significant correlated with C/N or pH .The sand and silt contents in the soil significantly correlated with k and N0 × k ,but not with other indicators .关键词
土壤类型/茶园/氮素矿化/相关性Key words
soil type/tea plantation/nitrogen mineralization/correlation分类
农业科技引用本文复制引用
陈玉真,王峰,尤志明,张文锦,翁伯琦..不同类型茶园土壤氮素矿化特性及其与土壤性质的关系[J].福建农业学报,2015,(7):679-684,6.基金项目
国家科技支撑计划项目（2014BAD15B01）；福建省科技计划项目---省属公益类科研院所基本科研专项（2014R1012-10）；现代农业产业技术体系建设专项（CARS-23-9）；福建省农业科学院青年人才创新基金 （）
