摘要
目的验证生菜的不可食生物量通过固定化微生物和酶降解后 ,可以用作下一代生菜栽培的营养液。方法对一定重量生菜干枯的叶子和根须经烘干磨碎后在生物反应器中于供氧条件下进行生物降解 ,将降解后的滤出原液及其补充液作为营养液进行生菜的水培。结果滤出原液中培养的生菜 ,每株的平均干重较对照植株差约一倍 ,而其补充液则与对照的基本相同 ;滤出原液及其补充液中栽培的植株其品质在硝酸盐含量等方面有所提高 ,在亚硝酸盐含量等方面又有所下降。结论生菜不可食生物量的生物降解液可以用作生菜水培的营养液 ,但对其进行适量无机离子的补充后效果会更好 ;
Objective To demonstrate that the recycled liquid, which originated from lettuce inedible biomass degraded by fixed microorgannism and enzyme, can be used as a nutrient solution for lettuce hydroponic cultivation. Method After biologically degrading the weighted, oven dried and milled leaves and roots of lettuce in a biological reactor under aerobic condition, the original effluent and its supplemented effluent were used as nutrients for lettuce hydroponic cultivation. Result The average dried weight(ADW) of lettuce from the original effluent group was approximately half of that from the control group, and the ADW from supplemented effluent group was about equal to that from the control group; some qualities of the lettuce such as a relatively lower content of NO 3- from both the original effluent group and the supplemented effluent one improved, and some of those such as a relatively higher content of NO 2- dropped. Conclusion The biologically degraded effluent was able to be used as nutrient solution for lettuce hydroponic cultivation, although the effects of the inorganic ion supplemented effluent were much better; the plants of lettuce from the biologically degraded effluent were safely edible.
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2001年第5期360-363,共4页
Space Medicine & Medical Engineering
基金
8 6 3资助 ( 86 3 2 2 2 8)
关键词
不可食生物量
生物降解物
营养液
水培养
生菜
inedible biomass
biologically degraded effluent
nutrient solution
hydroponic cultivation
lettuce
