木麻黄苗期生物量的水肥耦合效应  

Study of the Coupling Effect of Water and Fertilizer On Casuarina equsetifolia Biomass during Its Seedling Period

作　　者：吴锡麟[1] 叶功富[2] 李宝福[2] 许冰峰[3] 许信玲[2] 

机构地区：[1]闽江学院地理系,福建闽侯350108 [2]福建省林业科学研究院,福建福州350012 [3]福建农林大学科研处,福建福州350002

出　　处：《中南林学院学报》2005年第1期21-24,65,共5页Journal of Central South Forestry University

基　　金：国家"十五"科技攻关项目(2002BA516A16-15);福建省林业厅课题.

摘　　要：　针对滨海沙地因水肥不协调而形成大面积低效林分的问题,以水肥耦合为中心,以1年生木麻黄幼苗为研究对象,采用四因子五水平二次通用旋转组合设计,利用盆栽试验和定量分析的方法,研究探讨了在不同水肥条件下,水、N、P、K四因子对木麻黄生物量的影响.结果表明:四因素对木麻黄生物量存在着耦合交互效应,不同的水、N、P、K配合有不同的生物量积累.因此,合理施肥、量水配肥是改善滨海沙地因水肥不协调而形成大面积低效林的有效途径.By focusing on the coupling of water and fertilizer and using all-purpose regression design with four factors and five levels, and based on pot experiments and quantitative analysis, the coupling effect of water and fertilizer on Casuarina equsetifolia biomass was studied in order to solve the inconsistency problem of water and fertilizer supply on coastal sandy land. The results show that the coupling and alternating effects of four factors on Casuarina equsetifolia biomass exist and different conditions of water, N, P and K produce different biomass. Therefore, proper fertilization is an effective method to improve large-area inferior forests caused by the inconsistency of water and fertilizer supply.

关 键 词：木麻黄 生物量 水肥耦合 滨海沙地 

分 类 号：S791.280[农业科学—林木遗传育种]