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碳酸氢铵(以下简称碳铵)是本地区各县小型化肥厂生产的主要化肥品种,施用量占本地区氮肥总量的70%以上。它具有制造工艺简单、成本低、适于小型化肥厂生产,宜于各种土壤和作物施用等优点。但是,施法不当,会造成氮素挥发损失,降低肥效。所以,经济合理地施用碳铵,提高其肥效,是促进我区农业生产、降低农业成本的一项重要措施。1973年春天,我所在肥力中等的石灰性砂壤土上进行了小麦碳铵追肥方法试验,以每亩30斤碳铵于小麦分蘖末期一次追施,施肥方法①撒施:碳铵撒施土面;②沟施:间隔麦垄开沟条施碳铵,深1寸;③穴施:用1
Ammonium bicarbonate (hereinafter referred to as ammonium bicarbonate) is the county of small-scale fertilizer plants in the region produced the main fertilizer varieties, the amount of nitrogen fertilizer in the region accounted for more than 70% of the total. It has a simple manufacturing process, low cost, suitable for small-scale fertilizer production, suitable for all kinds of soil and crop application advantages. However, improper casting can cause loss of nitrogen volatilization and reduce fertilizer efficiency. Therefore, the economical and reasonable application of ammonium bicarbonate to improve its efficiency is to promote agricultural development in our region, an important measure to reduce agricultural costs. In the spring of 1973, on the calcareous sandy loam with medium fertility, we conducted a test on wheat topdressing with ammonium bicarbonate to 30 kg of ammonium bicarbonate per acre at the end of the tillering stage of wheat. Fertilization method: ; ② ditch facilities: interval barley ridge drench ammonium bicarbonate application, deep 1-inch; ③ Point Application: 1