化肥多怕高温曝晒和阴雨潮湿。研究表明:磷铵露天放置,在气温16℃情况下,氮的损失率是,1天为3.4％,5天10.6％、10天18％、15天26％;在20℃下损失率是,1天8.8％,5天48％,10天74％,15天77％;在32℃下氮损失率是,1天18.9％,5天67.9％,10天93.6％。可见环境温度越高,氮的损失越大。碳酸氢铵、氨水等稳定性差,当气温 Fertilizer afraid of high temperature exposure and rain wet. The results showed that when the ammonium phosphate was placed in the open air, the nitrogen loss rate was 3.4% at 1 day, 10.6% at 5 days, 18% at 10 days and 26% at 15 days at the temperature of 16 ° C; 1 day 8.8%, 5 days 48%, 10 days 74%, 15 days 77%; at 32 ° C, the nitrogen loss rates were 1 day 18.9%, 5 days 67.9% and 10 days 93.6%. It can be seen that the higher the ambient temperature, the greater the loss of nitrogen. Ammonium bicarbonate, ammonia and other poor stability, when the temperature