植物残体燃烧后,所留下的灰分统称为草木灰,它含有钾、磷、钙、镁、硫、铁及多种微量元素。其中含钾、钙较多,磷次之,是一种以钾为主的多元素复合肥料。所含钾盐以碳酸钾为主,硫酸钾次之.氯化钾较少,90％能溶于水,是速效钾肥。 草木灰可作基肥或追肥,水溶液也可根外追肥。据实验,亩施80公斤 Plant residues burning, the ash left behind collectively referred to as ash, which contains potassium, phosphorus, calcium, magnesium, sulfur, iron and a variety of trace elements. Which potassium, calcium more, followed by phosphorus, is a potassium-based multi-element compound fertilizer. Potassium salt is mainly potassium carbonate, followed by potassium sulfate.KCl less, 90% soluble in water, is a quick-acting potash fertilizer. Ash can be used as basal fertilizer or topdressing, aqueous solution can also root top dressing. According to the experiment, Mushi Shi 80 kilograms