土壤微生物菌肥在盐碱地造林中的作用  

The Function of Soil Microorganism Bacterial Fertilizer in the Salt and Alkaline Land on Afforest

作　　者：李兰晓 王海鹰 杨涛 杨光滢[2] 王志刚[3] 

机构地区：[1]陕西省治沙研究所,陕西榆林719000 [2]中国林科院,北京100090 [3]中国林科院沙漠试验中心,内蒙古磴口015200

出　　处：《西北林学院学报》2005年第4期60-63,共4页Journal of Northwest Forestry University

基　　金："九五"国家重点科技项目(1996);"三北"地区盐碱地改良和造林技术(96-007-01-04-02)

摘　　要：从我国内蒙古磴口地区的甘草、紫花苜蓿、樟子松、苦豆、刺槐、紫穗槐、沙棘等盐碱地植物根际土壤中分离出固氮微生物10株,从中筛选出3株固氮芽孢杆菌。经鉴定,1株(96-10)为巨大芽孢杆菌(B acillusm egaterium),2株(96-02;96-05)为蜂房芽孢杆菌(B aeillus a lve)。以草炭为载体制备成微生物菌剂,分别在内蒙古磴口地区和陕西榆林试验区,对10种树种进行了田间施肥试验,获得一定的效果。10 kinds of nitrogen fixation microorganism have been isolated from the root soil in which the Glycyrrhiza uralensis, Medicago sativra, Pinus sylvestris var. mongolica, Sophora alopecuroides, Robinia pseudoacaccia, Amorpha fruticosa ,Hippophae rhamnoides grew in the salme and alkali soil of Inner Mongolia Dengkou area,and 3 kinds of nitrogen fixation gemma bacillus have been selected from them. It was certified that one of them is Bacillus rnegaterium, the two others are Baeillus alve. The microbial fertilizer made by using grass charcoal as carriers can increase the survive rate of afforestation in the saline and alkali soil ,and promote the trees growth well.

关 键 词：芽孢杆菌 固氮菌株 微生物菌剂 田间试验 

分 类 号：S728.5[农业科学—林木遗传育种]