摘要
通过光合细菌(Photosyntheticbacteria,简称PSB)培养试验研究了猪粪便污水光合细菌液肥化技术,并对获得的PSB液肥通过无土栽培和田间小区试验在绿豆插条、番茄和青菜上进行了应用研究。结果表明,用猪粪便污水培养光合细菌生产PSB液肥是可行的;猪粪便污水发酵液通过8d培养获得的光合细菌液肥的PSB总数达4.6×108MPN·mL-1。光合细菌液肥能明显促进绿豆插条不定根发生,其中稀释200倍液的绿豆不定根数量、长度和生物量与蒸馏水相比,分别是蒸馏水的124%、157%和173%,而且不定根出现时间一般比蒸馏水提早3d。PSB液肥还能提高番茄叶片和青菜叶绿素含量,提高番茄和青菜Vc含量及产量,降低硝酸盐、亚硝酸盐含量。猪粪便污水光合细菌液肥化技术,可为农业循环经济的实施提供很好的技术支持,有助于禽畜养殖业的可持续发展。
The technology producing PSB fluid fertilizer from piggery waste water and its application were studied. It is feasible for piggery waste water to produce PSB fluid fertilizers. After PSB cultured in piggery waste water with CODCr 2 173 mg·L^-1 for 8 days, the PSB fluid fertilizer with 4.6×10^8 MPN· mL^-1 was obtained. Bioassay of mung bean cutting was carried out with 6 different test liquids, including distilled water, Lquan plant nutrient solution, PSB （ 1/50, 1/100, 1/200, 1/400; V/V）, and etc. The initiation of adventitious roots induced by PSB （1/ 200,V/V） was earlier than that induced by distilled water and Lquan plant nutrient solution. The numbers, length and fresh weight of the adventitious roots treated by PSB （1/200,V/V） increased significantly, in contrast with those treated by distilled water and Lquan plant nutrient solution. The results showed PSB fluid fertilizers could increase contents of chlorophyll in tomato leaves and greengrocery, increase their yield and contents of Vc, decrease contents of nitrate and nitrite in them. So, it is a good technology for producing PSB fluid fertilizers from piggery waste water.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2007年第1期265-268,共4页
Journal of Agro-Environment Science
基金
上海市科委重大项目(013912052)
关键词
猪场粪便污水
光合细菌液肥
绿豆插条
番茄
青菜
piggery waste water
PSB fluid fertilizers
mung bean cutting
tomato
greengrocery
