Such as polypeptide urea (or polypeptide compound fertilizer and polypeptide superphosphate) produced by adding metalloproteinases to traditional urea, double enzyme urea, double enzyme compound fertilizer and double enzyme diammonium produced by adding double enzymes. Moreover, the latter method is more convenient and effective than improving planting techniques and changing fertilization methods and time.
In fact, through continuous popularization, it has also proved this point. Polypeptide urea (polypeptide compound fertilizer, polypeptide superphosphate), double enzyme urea (double enzyme compound fertilizer, double enzyme diammonium), polycarbourea, enzyme-controlled compound fertilizer and other products were tested in Dezhou Experimental Station of China Academy of Agricultural Sciences, and the fertilizer efficiency was very obvious. The report given by the experimental station says: 80 > 100. That is, 40 kg of polypeptide urea has the same fertilizer efficiency as 50 kg of common urea; 70 > 100, that is, 35 kg of polypeptide compound fertilizer is equivalent to 50 kg of common compound fertilizer; 50 > 100, that is, the fertilizer efficiency of 25 kg of double enzyme urea is equivalent to that of 50 kg of ordinary urea. It can also increase yield, improve crop quality and enhance crop stress resistance.