井冈霉素对土壤可培养微生物的生态效应  

Ecological effects of jinggangmycin on soil culturable microorganisms

作　　者：王家德[1] 钱海丰[1,2] 胡宝兰[3] 王智烨[1] 徐茜[1] 

机构地区：[1]浙江工业大学生物与环境工程学院 [2]浙江大学环境修复与生态健康教育部重点实验室,杭州310029 [3]浙江大学环境修复与生态健康教育部重点实验室

出　　处：《农药》2006年第11期771-774,787,共5页Agrochemicals

基　　金：浙江省科技项目(2003C30053);浙江省自然科学基金(Y504076);环境修复与生态健康教育部重点实验室开放基金(050402)

摘　　要：土壤可培养微生物的动态变化表明,低浓度井冈霉素对细菌总数没有明显影响,较高浓度井冈霉素可促进细菌总数的增加,其中浓度在60mL/kg时,井冈霉素对细菌的刺激强度最高,为对照的220倍,过高浓度的井冈霉素(240mL/kg)对细菌总量的促进作用反而不明显。井冈霉素对土壤中放线菌数量是先刺激后抑制,刺激强度最高时,放线菌数量可增至对照的61倍左右;而最高抑制强度可使放线菌的数量降至对照的14.5%。井冈霉素对真菌的敏感性较低,只有浓度高达120、240mL/kg时,才对真菌产生明显刺激作用,最高刺激强度为同时期对照的118倍。发光菌的毒理试验表明,低浓度井冈霉素毒性很低,较高浓度时呈现较大毒性,但能在短期内恢复,而过高浓度时的井冈霉素可能对土壤微生物造成不可恢复的影响。The objective of this present work was to study the short-term influence of culturable microorganisms in jinggangmycin treated soils. The results indicated that high dose of jinggangmycin introduced into soil had significant stimulated effect on soil bacteria, the strongest degree of promotion of bacteria biomass was 220 times of the control＇s, but too high concentration of jinggangmycin treated soil had no significant promoted effect. Jinggangamycin could also promote the biomass of actinobacteria, but would inhibit it as followed, the strongest degrees of promotion and inhibition were 61 times and 14.5% respectively. Low dose of jinggangmycin treatment had no significant influence to fungi biomass, when the dose ofjinggangmycin Was high as 120, 240mL/kg, the biomass of soil fungi was stimulated, and the highest degree was 118 times than that of the control. In the pot experiment, the luminescence of Photobacterium phosphoreum spp. T3 showed a strongly negative relationship to the concentration of jinggangmycin, but luminescence of T3 could resume after one week later in treatment 5 and 6, while too high jinggangmycin would cause irreversible harm.

关 键 词：井冈霉素 微生物 生态效应 

分 类 号：S154.3[农业科学—土壤学]