Study on Irrigation and Ventilation of Greenhouse in Hebei Province
Irrigation technique and ventilation mode of greenhouse in Hebei province were investigated and analyzed, and, the ventilation rate by thermal pressure in condition of natural ventilation was calculated according to mass conservation principle. It was showed that ideal irrigation technology in Heibei province was “water delivery through hose and water injection through its side, and ditch irrigation under mulch, which not only saving water and operating simple, but also low cost and good popularization. The result also indicated that the sixth ventilation mode was the most ideal mode whose vent radius and height were respectively 25cm and 50cm. The vent was arranged every 100cm in the ridge and the width of the vent in the front bottom was 20cm. As it be, the basic ventilation requirement was satisfied with the above parameters. Finally it was displayed that the fifth ventilation mode must satisfy the minimum width 23cm of greenhouse ridge and front bottom separately.
solar greenhouse irrigation technique ventilation mode natural ventilation
ZHANG Xiping DONG Na
College of Urban and Rural Construction,Agricultural University of Hebei,Baoding,China,071001
国际会议
2007 International Conference on Agriculture Engineering(2007年农业工程国际会议)
河北保定
英文
106-110
2007-10-20（万方平台首次上网日期，不代表论文的发表时间）