摘要
为更加科学合理地利用污水灌溉农田,分别以100%、50%、33.3%和25%的污水及全清水(CK)浇灌盆栽大豆,研究不同浓度的污水浇灌对大豆幼苗生理生化特性及根际微生物生理类群的影响。结果显示:低浓度的污水可增加叶绿素含量,激活SOD、CAT活性,促进硝化细菌、固氮菌和纤维素分解菌的生长,抑制反硝化细菌和氨化细菌的生长;高浓度污水可显著降低叶绿素含量和SOD、CAT活性,抑制硝化细菌、固氮菌和纤维素分解菌的生长,刺激反硝化细菌和氨化细菌的生长繁殖,促进MDA的积累和膜透性增加。多项指标以污水浓度为33.3%～50.0%时的增效作用最为明显。
In order to use sewage to irrigate the farmland more scientifically and rationally, sewage from Shaying fiver was used to irrigate potted soybean with concentration of sewage at 100% ,50% ,33.3% and 25% respectively. The effects of different diluted sewage irrigation on some physiobioehemieal characteristics of soybean seedling and microbes in soybean rhizosphere soil were studied. The results showed that the low concentration treatment of sewage could increase the contents of chlorophyll of soybean and activities of SOD and CAT, and promote the growth of nitrifying bacteria, nitrogen-fixing bacteria and cellulose decomposing bacteria, while inhibit denitrifying bacteria and ammonifying bacteria. Sewage with higher concentration could de- crease chlorophyll content and SOD, CAT activities, and inhibit the growth of nitrifying bacteria, nitrogen-fxing bacteria and cellulose decomposing bacteria,while stimulate the growth and propagation of denitrifying bacteria and ammonifying bacteria, and promote the accumulation of MDA and permeability of cytoplasm membrane. The promotion effect of sewage was obvious at concentration of 33.3% -50.0%.
出处
《大豆科学》
CAS
CSCD
北大核心
2013年第2期216-219,共4页
Soybean Science
基金
河南省教育厅自然科学基金项目(2008A180037)
关键词
污水灌溉
大豆
生理生化特性
微生物功能类群
Sewage irrigation
Glycine max
Physiological-biochemical characLeristics
Microbial functional groups
