What precautions should be taken when applying chemical fertilizers?

(1) Do not water immediately after applying urea.
(2) Do not apply ammonium bicarbonate to the soil surface.
(3) Do not use ammonium bicarbonate in greenhouses or polytunnels.
(4) Do not mix ammonium-based nitrogen fertilizers with alkaline fertilizers.
(5) Do not apply nitrate-based nitrogen fertilizers to paddy fields.
(6) Avoid long-term use of ammonium sulfate.
(7) Do not apply phosphate fertilizers in a scattered manner.
(8) Do not apply potassium fertilizers during the late stages of crop growth.
(9) Avoid long-term, exclusive use of chlorine-containing fertilizers, and do not apply them to chlorine-sensitive crops.
(10) Do not apply large amounts of nitrogen-containing compound fertilizers to leguminous crops.