回龙山公社黄家大塘大队,地处丘陵岗地,有517户,2,290人,水田面积2,393亩,旱地156亩,主产水稻。随着农业学大寨的群众运动不断深入开展,促进了这个大队耕作制的不断改革。近几年来,麦-稻-稻和油-稻-稻三熟面积发展到占水田面积的70％以上。 为了解决改制后肥料不足的矛盾,1974年,这个大队的贫下中农,在早稻“后三田”进行了放养红萍的试验,放萍区亩产稻谷821.5斤,比未放萍的亩产656.4斤增产25％,1975年,早稻“后三田”放萍面积31.6亩, Huilongshan commune Huangtatatang brigade, located in hilly Kong, there are 517 households, 2,290 people, paddy field area of ​​2,393 acres, 156 acres of dry land, the main production of rice. As the masses movement in Dazhai Agricultural Institute continued to deepen, the continual reform of the farming system of this unit was promoted. In recent years, wheat-rice-rice and oil-rice-rice tri-area developed to account for more than 70% of paddy field area. In order to solve the contradiction of lack of fertilizers after the reform, in 1974, the poor and middle peasants of this brigade conducted a trial of stocking red clover in early rice “Hou San Tian”, releasing 821.5 kg of mu per mu of rice and 656.4 kg of mu per mu An increase of 25% in 1975, early rice, “after the three fields,” Ping area of ​​31.6 acres,