为什么钙镁磷肥等碱性肥料不能与铵态氮肥混施?
参考答案:
碱性肥料若与铵态氮肥料如碳酸氢铵、硫酸铵、硝酸铵、氯化铵等混施,则会增加氨的挥发损失、降低肥效。
----Carol Walker didn’t turn up last time ,did she ?
----No .She _______.We had changed our plan .
A.shouldn’t have come
B.needn’t have to come
C.didn’t need to come
D.needn’t have come
患者男性,35岁,因车祸致腰椎损伤,请你现场实施腰椎损伤伤员的搬运。(在医学模拟人上操作)(20分)