Topdressing Technology of Summer Peanut

Fertilizing should achieve "two pursuits, one spray and four supplements". Specifically: two topdressing, that is, the first topdressing in front of peanut clumps as early as possible, the amount of fertilizer applied is 10 kg of urea, 15 kg of diamine and 10 kg of potassium chloride; the second topdressing is at the beginning of the expansion period of young fruit, and 10 kg of urea is applied per mu. In the later stage of growth, urea 0.5 kg plus potassium dihydrogen phosphate 0.2 kg per mu was sprayed with 50 kg water for 3 times to prevent premature senility. The four supplements are calcium fertilizer, molybdenum fertilizer, iron fertilizer and boron fertilizer. Phosphogypsum for calcium fertilizer was applied to podding layer with 50 kg phosphogypsum per mu before peanut sealing, ammonium molybdate was used for molybdenum fertilizer, 0.05% ammonium molybdate solution was sprayed twice at seedling stage, ferrous sulfate was used for iron fertilizer, 0.2% ferrous sulfate solution was sprayed for 3 times after rain or irrigation, boric acid was used for boric fertilizer, and 0.1% boric acid solution was sprayed twice at the beginning of flowering.