The invention discloses a honey pomelo sustained and
controlled release decrement set
meal fertilizer which is prepared from a tip-prompting flower-strengthening
fertilizer, a fruit-stabilizing fruit-strengthening
fertilizer and a harvested fruit preservation fertilizer according to a
mass ratio of 91:120:523. The tip-prompting flower-strengthening fertilizer is prepared from a 42%
sulfur-containing sustained and
controlled release composite fertilizer, a 46% nitro-compound fertilizer and
borax according to a
mass ratio of 77:22:1; the fruit-stabilizing fruit-strengthening fertilizer is prepared from a 45%
sulfur-containing sustained and
controlled release composite fertilizer, 46% nitro-compound fertilizer, a 58% water-soluble fertilizer and
magnesium sulfate according to a
mass ratio of 66.7:16.7:8.3:8.3; the harvested fruit preservation fertilizer is prepared from a 45%
sulfur-based compound fertilizer,
borax,
zinc sulfate, a commercial
organic fertilizer and
calcium superphosphate according to a
mass ratio of 15.3:0.19:0.38:76.48:7.65. The set
meal fertilizer can simultaneously provide a sustained and controlled release
nitrogen source and a rapid-acting
nitrogen source, and meets requirements of honey pomelo for nutriment in different periods; yield of the honey pomelo can be improved, the benefits are increased, fertilizer application times are reduced, and content of
vitamin C in the honey pomelo and a
sugar-acid ratio are improved.