为了广辟肥源,我们从1975年起和贫下中农一道进行了铜渣作肥的试验。1975年冬在小麦上搞了5分地的试验,初见成效。1976年在继续进行小区试验的同时,在早、晚稻上进行了较大面积的试验示范,均收到显著的增产效果。到1976年冬,试验作物扩大到小麦、油菜、红花草,示范面积达6,000余亩,全年共施用铜渣70余吨。现将1976年铜渣在水稻上施用的结果总结于后。 In order to broaden the source of fertilizers, we started the trial of using copper slag as fertilizer with the poor and middle peasants since 1975. In the winter of 1975, a 5-point trial was conducted on wheat and the results were initially achieved. In 1976, while continuing the district trial, a large area of ​​pilot demonstration was conducted on early rice and late rice, all of which received significant yield increase. By the winter of 1976, the experimental crops were expanded to wheat, rapeseed and saffron with a demonstration area of ​​more than 6,000 mu and a total of more than 70 tons of copper slag were applied throughout the year. The results of the application of copper slag on rice in 1976 are summarized below.