在日本,粪肥通常用来提高作物产量和土壤肥力。可是,最近在农业生产情况改变的条件下,耕牛几乎全部被淘汰,开始用大量化肥来代替粪肥。另一方面,家畜和家禽数量的增加则出现了新的问题,即怎样处理其大量的排泄物。牧民们必须将大量的动物排泄物或新鲜粪肥陆续地施到地里,但这个国家的放牧地 In Japan, manure is often used to increase crop yields and soil fertility. However, under the conditions of the recent changes in agricultural production, almost all the cattle have been eliminated and large quantities of fertilizers have been replaced by manure. On the other hand, there has been a new problem with the increase in the numbers of livestock and poultry, namely, how to handle their large amounts of waste. Pastoralists must apply large amounts of animal waste or fresh manure to the ground, but the grazing land in this country