摘要
规模化畜禽养殖废水处理和利用是限制养殖业健康和可持续发展的重要因素,也是我国当前最为重要的污染源之一。为探讨猪场肥水设施蔬菜资源化利用模式可行性,利用工程处理的猪场肥水配制的营养液开展了油菜水培试验研究。结果表明:当猪场肥水稀释6~8倍时,油菜成活率最高;自由水/束缚水数值较高,油菜生长代谢旺盛;叶绿素含量显著高于标准营养液处理(P【0.05),且地上部鲜重与标准营养液处理无显著差异。稀释6倍和8倍的猪场肥水油菜硝酸盐含量比标准营养液处理分别降低了89.98%和90.27%。猪场肥水稀释6~8倍后较适宜油菜水培营养需求,这为猪场肥水的合理利用提供了一定的理论依据。
In China, swine effluents not only cause agro-environmental pollution, but may also restrict healthy and sustainable development of livestock farming. A water cultivation experiment with rape seedlings was used to explore the feasibility of swine effluents as nutrient solution. The experiment included six different dilutions of swine effluents and one inorganic nutrient solution as a control. In the treatments with 6 times and 8 times diluted swine effluents, the survival rate and free water to bound water ratio of rape seedlings were highest, whereas the fresh weight of the aboveground parts had no significant difference from the control. Compared with the inorganic nutrient solution, the contents of chlorophyll increased by 51.08% and 63.16%, but nitrate content reduced by 89.98% and 90.27% in the treatments of 6 times and 8 times diluted effluents, respectively. It is concluded that 6 times or 8 times dilution of the swine effluents could be used for rape soilless cultivation.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2014年第1期193-197,共5页
Journal of Agro-Environment Science
基金
国家科技支撑项目(2012BAD15B02)
天津市科技支撑计划重点项目(12ZCZDNC01800)
中央级公益性科研院所基本科研业务费专项
公益性行业(农业)科研专项(201303101-04)
关键词
猪场肥水
营养液
水培
油菜
硝酸盐
swine effluents
nutrient solution
water culture
rape
nitrate
