摘要
在室温下培养土样并采用梯度稀释涂布的方法研究了不同质量分数的呋喃丹对砖红壤中细菌、真菌和放线菌3大主要土壤微生物种群数量变化的影响。结果表明,细菌、真菌和放线菌种群对呋喃丹的反应随其施加质量分数的不同而有所差别。培养初期,5mg·kg-1呋喃丹处理土壤的细菌、真菌、放线菌数量相对最少。而在整个培养周期内随着培养时间的增加,各处理细菌和放线菌数量均能恢复并接近对照水平,但真菌的生长一直受到抑制且呋喃丹质量分数越大其受抑制程度也越大,表明呋喃丹对细菌和放线菌无明显的影响,而抑制真菌的趋势明显。因此,真菌可以被作为海南砖红壤受呋喃丹污染的敏感指示菌。
The effects of Carbofuran in different concentrations on the population of soil microorganism were investigated by cultivated soil samples in room temperature and used the method of gradient dilution coating. The results indicated that the population of bacteria, fungi and actinomycetes were reacted differently with the concentration of Carbofuran increased in soil. In the initial cultivation, quantity of bacteria, fungi and actinomycetes was relatively lower when the Carbofuran in 5mg·kg^-1, then the quantity of bacteria and actinomycetes was increased and approached to the control level with the time prolonged. While the growth of fungi was always restrained in the whole cultivation period, and the higher concentration of Carbofuran, the greater restrained of fungi. The results also showed that there was no obvious influence of Carbofuran on the growth of bacteria and actinomycetes, but the growth of fungi was greatly restrained, especially in the high concentration of Carbofuran. Therefore, fungi may be used as a possibly sensitive indicator in Carbofuran＇s polluting Granitic Latosol in Hainan province, China.
出处
《生态环境》
CSCD
北大核心
2006年第3期534-537,共4页
Ecology and Environmnet
基金
国家科技部科技基础性工作和社会公益研究专项(2004DIB3J073)
关键词
呋喃丹
砖红壤
微生物种群
Carbofuran
Granitic Latosol
microbial population
