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从1971-1976年的试验结果表明,在土壤 pH 为5左右的山地黄泥土茶园中,就铵态型N肥来说,以硫酸铵肥效最好,其次是碳酸氢铵,氨水和氯化铵最差,六年平均产量,如以硫酸铵为100,则碳酸铵、氯化铵和氨水分别为98、80、和82.6。析分结果认为,碳酸氢铵主要是氮易挥发逸失而影响其效果,如果深施5寸,可提高肥
The experimental results from 1971 to 1976 showed that ammonium sulfate fertilizer had the best effect on ammonium N fertilizer in the mountainous yellow soil tea garden with soil pH of about 5, followed by ammonium bicarbonate, ammonia and ammonium chloride Worst, six-year average yield, ammonium sulfate, ammonium chloride, and ammonia were 98, 80, and 82.6, respectively, if ammonium sulfate was 100. Analysis of the results that the ammonium bicarbonate is mainly volatile nitrogen emissions affect their effectiveness, if the depth of 5 inches, can increase fertilizer