3种常见速生灌木吸收红壤氮磷能力的比较  

Absorption of soil N and P by three fast growing bush species

作　　者：王卫国[1,2] 童根平[1,2] 徐温新[1,3] 窦春英[1] 张圆圆[1] 叶正钱[1] 

机构地区：[1]浙江林学院环境科技学院,浙江临安311300 [2]浙江清凉峰国家级自然保护区管理局,浙江临安311323 [3]西北农林科技大学资源与环境学院,陕西杨凌712100

出　　处：《浙江林学院学报》2009年第3期346-350,共5页Journal of Zhejiang Forestry College

基　　金：浙江省重大科技攻关项目(2005C12032)

摘　　要：由于大量施用肥料造成养分在土壤中积累,已经成为重要的面源污染源。通过栽植植物篱截留养分是防止面源污染的最有效措施之一。为了更好地利用植物资源,采用土培盆栽试验的方法比较了3种常见速生绿化灌木红叶石楠Photinia fraseri,金森女贞Ligustrum japonicum‘Howardii’和柳叶蜡梅Chimonanthus salicifolius对红壤氮磷的吸收积累能力。结果表明,红叶石楠对土壤氮的吸收能力最强,积累量最大,达到30mg·盆-1,可作为红壤氮截留的首选植物篱植物;而金森女贞对土壤磷的吸收能力最强,吸收积累土壤磷达到8mg·盆-1,同时对土壤氮的吸收积累量也达到了25mg·盆-1,金森女贞可以作为红壤植物篱的植物种类。红叶石楠与金森女贞配合混植有可能起到更有效的植物篱功效。Due to soil and water erosion, excessive nutrient loss in heavily fertilized farmland is creating serious pollution problems and contributing to groundwater contamination as well as non-point source pollution; hedge plants may help control this problem. In order to chose bush species with strong absorption ability, a soil-pot experiment was conducted to test the capability of soil nitrogen （N） and phosphorus （P） absorption by three fast growing bush species： Ligustrum japonicum ＇Howardii＇ , Photinia fraseri, and Chimonanthus salicifolius. Results showed that P. fraseri was able to uptake N most actively （P〈0.01）;meanwhile L. japonicum ＇Howardii＇ was able to uptake P most actively （P〈0.01） together with strong ability to absorb N. Therefore, intercropping with these two species may act as a more efficient barrier to N and P loss from soil and water erosion.

关 键 词：土壤学 植物篱 氮肥 磷肥 面源污染 金森女贞 红叶石楠 柳叶蜡梅 

分 类 号：S718.3[农业科学—林学]