近几年来的试验和生产实践证明,花生地施用氮素化肥作底肥增产效果显著。据一九七八年二十七处对比试验结果,每亩施三十—五十斤氨水或十五—二十斤硫酸铵等氮素化肥作底肥,都比不施的增 Experiments and production practices in recent years have proved that the application of nitrogenous fertilizer in peanut as a base fertilizer increases the yield significantly. According to the comparative test results of Twenty-seven in 1978, thirty to fifty pounds of ammonia water per acre or nitrogenous fertilizer of fifteen to twenty pounds of ammonium sulfate were used as base fertilizer,