Fertilizer containing alginate and special for large cherry and production method of fertilizer

The invention discloses fertilizer containing alginate and special for the large cherry and production method of the fertilizer. The fertilizer comprises, by weight, 0.6-1.5 parts of alga extract, 20-50 parts of urea, 4-10 parts of urea phosphate, 10-40 parts of potassium sulfate, 5-10 parts of crude humic acid, 3-5 parts of calcium magnesium ore powder, 0.5-2 parts of borax, 0.05-0.2 part of ferrous sulfate, 0.05-0.3 part of zinc sulfate, 0.05-0.2 part of copper sulfate and 10.45-21.75 parts of clay. The fertilizer has the advantages that the alga extract in the fertilizer can prevent the problems that the cherry is low in fruiting rate, cherry leaves turn yellow, and the like, and cherry's resistance to low temperature in early spring is increased; the urea phosphate in the fertilizer can assist soil acidification so as to provide a subacid root environment for the cherry; trace elements in the fertilizer provide balanced nutrition for the cherry, prevent fruit drop and fruit cracking and increase the appea