How about a bombardment of Shandong Meisheng chemical fertilizer?

Shandong Meisheng chemical fertilizer can't be shelled well. According to the relevant public information, the first bombardment has poor ability to maintain organic matter content in corn, wheat and other plots, especially sandy loam plots, and the yield reduction is obvious in the later stage of fertilization, which is harmful to fruit trees. It will affect 2-3 years, and one fertilizer can't meet the whole growth period: for example, fruit trees have a large demand for nitrogen and phosphorus in spring and a large demand for potassium fertilizer in fruit expansion period, so it is more productive to use fertilizers in different periods.