编者：现将我采用熏烟防冻做法寄给编辑部，请介绍给同行。隆冬，在果园的上风方向，每5米放一个烟火堆，先在中间放干稻草或其它桔杆，然后在四周堆上干牛粪再盖上草皮属与树皮，严寒来临时点燃后，封闭出火点任其发烟。一定要准备干牛粪，因为牛粪点火后的烟浓。如其它材料过 Editor: Now I use fumigation antifreeze sent to the editorial department, please introduce to peers. Winter, in the windward direction of the orchard, put a pyrotechnical pile every 5 meters, first put dried straw or other straw in the middle, and then heap on the surrounding dry cow dung and then covered with turf and bark, when the cold is lit, Closed out of the fire any smoke. Be sure to prepare dried cow dung because the dung is strong after ignition. As other materials too