北京市山区冬季塑料暖棚养猪技术

根据光热转换原理和封闭式塑料大棚透光、增温、保渐效果好的特点，在山区入冬后，将敞开式猪舍用０．１４ｍｍ的塑料复盖，全部封闭。改善猪冬季生长的圈舍小气候环境，减少不合理的热能消耗，提高饲料利用率。使山区有限的营养物质投入，获取较高的生产力效果，改变山区一年养猪半年长肉的落后局同。

Technology of Growing Pigs in Plastic Shelters for Mountainous Areas of Beijing in Winter

Based on the principles of radiation heat transformation and the effects of plastic shelters on photopermeability and heat accumulation,the open pigsty was covered with 0 14mm plastic film from the beginning of winter in the mountainous areas of SW Beijing,so as to improve the microscopic environment for pigs.The energy consumption was decreased and the feed efficiency increased.Higher productivity was obtained with limited forage,which changed the backward situation of feeding in the whole year and growing only half a year.