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为了寻找低产区谷子增产途径和经济利用化肥,根据一般禾谷类营养临界期多数在发芽后10—20天的特点,从1963年起,我们开始进行谷子氮素种肥的研究。两年来,在旱薄地上试验结果,以亩施农家肥3000斤为基础,谷子施用1斤/亩氮素作种肥(即硫铵5斤/亩或硝铵3斤/亩),可增产8.1—12.6％,两年平均为10.4％,达到显著标准。每斤硫铵可增收谷子4.44斤,每斤硝铵种肥可增产8.3斤。
In order to find ways to increase yield of millet in low-yield areas and to use chemical fertilizers economically, according to the characteristics of most of the critical stages of cereal nutrition after 10-20 days after germination, we started to study nitrogenous fertilizer of millet from 1963 onwards. In the past two years, the test results on dry land were based on 3000 kg of farmhouse fertilizer per mu, and 1 kg / mu of nitrogen was used as seed fertilizer (ie, 5 kg / mu of ammonium sulphate or 3 kg / mu of ammonium nitrate) 8.1-12.6%, an average of 10.4% for two years, reaching a significant standard. 4.48 kg of ammonium sulfate per kilogram of harvested grains can increase income per kilogram of ammonium nitrate fertilizer 8.3 kg.