鸟粪、牛粪、猪粪、马粪和鸡粪是很好的有机肥料,但却有个缺点.它们都要分解放出沼气,这种气体可加速温室效应.日本北海道大学的科研人员发明了一种解决这个缺点的新方法.在粪肥中加入原生菌,这种原生菌是一种十分古老的微生物,是地球上出现最早的生命形式之一.原生菌可阻止沼气的形成,几乎全部去除粪肥中的氨和硫化氢,从而消除粪肥的臭味.这种经过原生菌加工的粪肥较一般的粪肥能更快地变成混合肥料. Bird droppings, cow droppings, pig droppings, horse droppings and chicken manure are good organic fertilizers, but have the disadvantage that they both decompose and emit methane, which accelerates the greenhouse effect. Researchers at Hokkaido University in Japan have invented One new way to deal with this shortcoming is to add the native bacteria to manure, a very ancient microorganism that is one of the earliest forms of life on Earth, preventing the formation of biogas almost completely Ammonia and hydrogen sulphide in manure, and thus eliminate the smell of manure, which can be more quickly converted into compost than normal manure.