化肥放久了会失效吗？许多人对化肥久放是否会失效产生疑虑，现将有关情况介绍如下。１碳酸氢铵不会失效。许多人都产生误解。下面我们列出化学反应式：ＮＨ４ＨＣＯ３→ＮＨ３↑＋ＣＯ２↑＋Ｈ２Ｏ上述反应，在冬天０℃左右，几乎不发生反应。因此，农民利用冬季碳酸氢... Fertilizer put a long time will fail? Many people have doubts over the long-term failure of chemical fertilizers. The relevant information is as follows. 1  Ammonium bicarbonate will not fail. Many people are misunderstood. Below we list the chemical reaction: NH4HCO3 → NH3 ↑ + CO2 ↑ + H2O The above reaction, in the winter about 0 ℃, almost no reaction. Therefore, farmers use winter bicarbonate ...