我县十字街公社有水田3万多亩,其中垡包土面积占三分之一左右,影响粮食产量。为使农业基础课教学更好地为农业生产服务,通过校队挂勾形式,在垡包土较多的龙潭大队五队,同贫下中农一起进行了施肥改土试验,即亩施60斤小灰(草木灰)做底肥,水稻平均亩产885斤,比不施小灰的增产近50%。据试验,施小灰的水稻植株矮壮,不实率低,粒 There are over 30,000 mu of paddy field in the crossroads commune in our county, of which about one-third are affected by the enclave area, affecting grain output. In order to make the teaching of agricultural basic courses better serve agricultural production, the fifth team of Longtan Brigade, which has more soil and soil, conducted the experiment of fertilizing soil and improving soil together with the poor middle peasants, that is, 60 kg of gray ash (Ash) to make the base fertilizer, the average yield of rice 885 kg, than the small increase of nearly 50%. According to the experiment, Shi Xiaogu rice plant short and strong, unrealistic rate is low, grain