水稻收割后的大量稻草(秸杆),有不少农户为方便起见常一烧了之。其实焚烧是最不科学的处理和利用方法,这一烧烧掉了宝贵的资源,使稻草的有机质和氮素全损失,仅留下15.5%的灰分。每亩(1亩=667平方米,下同)稻草中除含有大量有机质外,还能释放出为下季作物所需要的养分,它相当于碳酸氢铵26千克,磷肥13.5千克,氧化钾20 After harvesting a large number of rice straw (straw), many farmers often burn for convenience. As a matter of fact, incineration is the most unscientific treatment and utilization method. This burn burns precious resources and causes total loss of straw organic matter and nitrogen, leaving only 15.5% ash content. Each mu (1 mu = 667 square meters, the same below) in addition to straw contains large amounts of organic matter, but also release the nutrients needed for next season crops, which is equivalent to 26 kg of ammonium bicarbonate, 13.5 kg of phosphate, potassium 20