The amount of zinc humic acid and urea should be determined according to many conditions such as soil, crops, and climate. Under normal circumstances, it can be used as an upgraded product of urea. Under the premise of ensuring the effect, it can use 20% less than ordinary urea, and it can also be used with ordinary urea. The same amount of use. Under the same dosage, the effect of applying zinc fulvic acid urea was obvious.
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