配制番茄的无土栽培营养液要用到KNO3作肥料,化肥KNO3是一种请选择ABCD3z'C4k8k5A0[4e9I6}._/~+^*a'f
A.复合肥料4e9I6}._/~+^*a'f
B.磷肥4e9I6}._/~+^*a'f
C.钾肥4e9I6}._/~+^*a'f
D.氮肥4e9I6}._/~+^*a'f