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【简答题】
某蔬菜基地在种植蔬菜时，到下列方法： （1）施用适量的氮肥可使种植的蔬菜叶色浓绿． ①下列化肥中属于氮肥的是______（填序号） A．碳酸氢铵[NH 4 HCO 3 ]B．草木灰[K 2 CO 3 ]C．磷矿粉[Ca 3 （PO 4 ） 2 ] ②草木灰呈碱性，你认为它______（选填“能”或“不能”）与所选的氮肥混合物使用，理由是______． （2）用大棚种植蔬菜时，大棚中补充气体肥料CO 2 ，其目的是促进绿色植物的______作用．当大棚中CO 2 的浓度过，种植人员______（选填“能”或“不能”）呆在大棚内，其原因是CO 2 具有______的性质． （3）农业上熟石灰和硫酸铜混合配制波尔多液，用来消毒、杀菌．配制波尔多液时，能否用铁制容器______，其原因（用化学方程式表示）______，该反应的基本类型属于______反应．
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