基于温室酿热补气的棚体式发酵装置应用研究OA北大核心CSTPCD

[Objectives]To solve the current problems of large amount of agricultural waste,low resource utilization rate,and low temperature and insufficient CO2 for production of facility vegetables in cold winter areas in China,a shed type biomass fermentation device was designed.[Methods]This equipment included fermentation shed body(6 m long,5 m wide,2.8 m ridge height),forced heat exchange device and indoor heating pipeline in three parts.Using corn straw and sheep manure as raw materials for layered pile fermentation,the thermal performance of the fermentation unit brew,the impact on the thermal environment,gas environment and production of the facility greenhouse,and the economic benefits were explored.[Results]The temperature of the pile in the fermentation unit was above 50℃ for a total of 65 d,and the heat production efficiency reached 74.94％.The temperatures were more than 1.04 ℃ higher compared with the control greenhouse.The global warming potential(GWP)index decreased 96.98％through the gas filtration device and CO2 recovery system during the composting process.The CO2 concentration increased 2 270.58 mg·m-3.The soluble protein and vitamin C contents of tomatoes in the heated area were 24.6％and 29.2％higher than those in the control area respectively,and the lycopene was 71.3％higher than that in the control area.The operation of the biofermentation unit increased the field per plant by 5.99％and increased income by 8 712 yuan.[Conclusions]The application of shed-body biomass brew heaters in cold regions could provide heat and CO2 required for crop growth in facility greenhouses.