Abstract This paper discusses several issues related to fertilizers in chemistry teaching: the current versions of junior high school textbooks have different descriptions of the main components of phosphate rock powder, it is recommended to change it to Ca5(PO4)3F, which is related to calcium hydroxyphosphate; The apparent symptoms of a plant lacking a certain nutrient element are staged and are similar in symptoms to the lack of trace elements, it can’t be generalized as a lack of any one element among nitrogen, phosphorus and potassium; The special properties of chemical fertilizers are closely related to the application method and fertilizer efficiency, the special properties of phosphate fertilizer make its application method different from that of nitrogen and potash fertilizer, urea undergoes a series of transformations in the soil and is eventually absorbed by crops as NH+4, and it cannot be mixed with alkaline substances for application.
ZHOU Wen-Yuan. Discussion on Several Issues of Chemical Fertilizers and Teaching Suggestions from Perspective of Subject Understanding[J]. Chinese Journal of Chemical Education, 2024, 45(21): 113-116.
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