摘要
采用盆栽方法模拟土壤Cd轻度污染状况,研究施入3种微生物菌剂(枯草芽孢杆菌、光合细菌和乳酸菌)对菠菜生长及对镉吸收的影响。结果表明,1mg·kg^(-1)镉对菠菜生长起到促进作用,使植株鲜质量和干质量增加;使植株镉含量和镉积累量显著提高。施入微生物菌剂后,菠菜单株鲜质量和干质量平均增长幅度分别为18.8%和15.7%,微生物对菠菜生长的促进作用大小为:光合细菌>乳酸菌>枯草芽孢杆菌;此外,菠菜植株镉含量显著减少,平均下降幅度为14.5%,微生物对菠菜镉吸收的降低作用大小为:枯草芽孢杆菌>光合细菌>乳酸菌。试验还表明,菠菜植株镉含量与菌数呈显著负相关。
Effect of three kinds of microorganisms on growth and cadmium uptake in spinach was investigated with a pot experiment in greenhouse.The results showed that 1 mg·kg^（-1） cadmium could promote the growth of spinach by making fresh and dry weight per plant increasing and strengthen the Cd content and accumulation in plant significantly.When plants were supplied with microorganisms, fresh and dry weight per plant were average increased 18.8%and 15.7%respectively and Cd conent in spinach was average decreased 14.5%.Besides,we also concluded that Cd content in plant was negative correlated with microbial concentration significantly.
出处
《天津农业科学》
CAS
2011年第1期81-83,87,共4页
Tianjin Agricultural Sciences
基金
山东省优秀中青年科学家科研奖励基金(2007BS06014)
关键词
微生物
镉胁迫
菠菜
microorganism
Cd stress
spinach
