中国油料作物学报2011，Vol.33Issue(2)：162-168,179,8.
草甘膦对土壤微生物的影响
Effects of glyphosate on soil microorganisms
摘要
Abstract
Black soil in northeast region of China was used to investigate the effects of glyphosate on soil respiration, soil cultural bacteria, Rhizobium japonicum and Fusarium oxysporum, to provide a theoretical basis for the evaluation of environmental safety of glyphosate. The results showed that increasing glyphosate concentration increased the inhibition on soil respiration. When glyphosate concentration in soil were ling · kg-1 , 10mg · kg-1 and 100 mg · kg-1 , the risk index were 1.20, 0. 322 and 0.076, which were less than the standard index of 20.Glyphosate influenced quantities of soil fungi and actinomycetes. High glyphosate concentration increased the inhibition to population of soil cultural bacteria. With the extended application of glyphosate, soil fungus, bacteria and actinomycetes populations had been restored. Actinomycetes were more sensitive to glyphosate than fungus and bacteria, and soil bacteria had a strong tolerance or degrading ability to glyphosate. Glyphosate impacted on inhibiting Rhizobium japonicum and Fusarium oxysporum, and the inhibition of Rhizobium japonicum was in direct proportion with the concentration of glyphosate. Low glyphosate concentration promoted Fusarium oxysporum populations,while high concentration inhibited them. The extended application time of glyphosate decreased the inhibition of glyphosate on Rhizobium japonicum and Fusarium oxysporum.关键词
草甘膦/土壤微生物/土壤呼吸/固氮根瘤菌/根腐镰刀菌Key words
Glyphosate/ Soil microorganisms/ Soil respiration/ Rhizobium japonicum/ Fusarium oxysporum分类
农业科技引用本文复制引用
陶波,蒋凌雪,沈晓峰,栾凤侠,邱丽娟..草甘膦对土壤微生物的影响[J].中国油料作物学报,2011,33(2):162-168,179,8.基金项目
转基因生物新品种培育重大专项课题(2008ZX08004-001) （2008ZX08004-001）
