The Ministry of Agriculture imposes restrictions on silicon fertilizers
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Before the Spring Festival, the Ministry of Agriculture imposed restrictions on the sale of silicon fertilizers; silicon fertilizers registered in one province could only be sold within that province. I’m not sure why this is the case, so I hope someone can give me some guidance.
The use of silicon fertilizers inherently has a strong regional character and high selectivity regarding crops, with significant variations in their efficacy; this is probably the reason for that.
The effect of silicon fertilizers is actually quite limited, as soils already contain large amounts of silicon; areas lacking silicon are relatively rare.