灶——烧饭的炉灶,人类一天三餐用它烧饭,已经度过悠久的历史岁月。沧海桑田,世界大变,可是灶在中国农村或一些发展中国家,却改变不大。据科学测试,旧式灶烧柴的热利用率还不到百分之十,也就是说,百分之九十浪费掉了。试想,地球上成亿户人家每天使用它,该浪费多少柴草?而且,在不少地方,柴草又十分紧张,多少年来,人们就盼望着一种省柴的锅灶。面对着这大而又古老的难题,郸城一个基层干部李治 Stove - cooking stove, human meals a day with it, has spent a long history of time. The world has changed dramatically, but the stove in rural China or some developing countries has not changed much. According to scientific tests, the heat utilization rate of old stoves is less than 10%, that is, 90% wasted. Imagine, on earth, hundreds of millions of families use it every day, how much waste of firewood? And, in many places, firewood is very tense, for many years, people are looking forward to a kind of firewood stove. Facing this big and ancient problem, Li Zhi, a grassroots cadres in Dancheng city