上海郊区普遍实行三熟制后,需肥量大增,有机肥供不应求。近年来金山、青浦、宝山、崇明等县利用零星休闲田、饲料田和早熟麦茬后季稻秧田放养绿萍,发展“萍肥库”,自力更生增积有机肥,效果很好。贫下中农称赞说:“萍肥库,肥料库,积肥快,造肥多,大力发展萍肥库,农业生产跨大步。” After the three suburb system is generally implemented in the suburbs of Shanghai, the amount of fertilizer needed to increase greatly and the supply of organic fertilizer in short supply. In recent years, Jinshan, Qingpu, Baoshan, Chongming and other counties using sporadic leisure fields, feed fields and early season wheat stubble late rice seedling stocking Luping, the development of “Pingfei library”, self-reliance organic fertilizer, the effect is very good. Poor middle peasants praised: “Pingfei library, fertilizer library, fertilizer fast, more fertilizer, vigorously develop Pingfei library, agricultural stride.”