据统计,全世界大约有十五亿人需要烧柴,每年大约烧掉十二亿立方米木材。由于木材奇缺,有些农户不得不烧作物的秸杆和粪便,据统计全世界每年烧掉畜粪四亿吨。以一吨畜粪相当于五十公斤粮食计算,全世界每年就等于少收二千万吨粮食。 我国农村人口占百分之八十左右,据统计全国有八千万农户每年缺柴三～六个月,占全国总农户的百分之四十七点七,仅就黑龙江而言,在全省三百六十万农户中,就有二百万缺柴户,其中严重缺柴户已近百万。 According to statistics, about 1.5 billion people around the world need to fire wood and burn 1.2 billion cubic meters of wood each year. Due to the scarcity of wood, some farmers had to burn the straw and manure of their crops. According to statistics, the world annually burned 400 million tons of animal manure. Calculated on the basis that a ton of livestock dung is equivalent to 50 kilograms of grain, the world will receive 20 million tons of less grain each year. China’s rural population accounts for about 80% of the total population. According to statistics, 80 million rural households in the whole country lack three to six months of fuel a year, accounting for 47.7% of the total rural households in the country. For Heilongjiang alone, Among the 3.6 million farmers in the province, there are 2 million missing households, of which nearly 1 million are seriously lacking.