A.施肥前一周 B.與施肥同時(shí)進(jìn)行 C.施肥后一周進(jìn)行 D.與施肥無關(guān)
A.8:10:6 B.6:8:10 C.10:8:6 D.6:10:8
A.鉀肥 B.磷肥 C.氮肥 D.有機(jī)肥