Prevent phosphorus deficiency: 15-25kg of calcium phosphate per acre. During the full bloom of peanuts, the surface of the peanuts can be sprayed with 2-3% of superphosphate calcium clarification solution 40 kg.
To prevent potassium deficiency: 1. Apply 150kg of grass ash as base fertilizer, 2. Apply 5-10kg of potassium chloride or potassium sulfate per acre. 3. Foliar application of 0.3% potassium dihydrogen phosphate.
Prevent iron deficiency: 1. Apply 0.2-0.4kg of ferrous sulfate per acre. 2. Soak seeds with 0.1% aqueous ferrous sulfate solution for 12 hours before planting. 3. Spray 0.2% aqueous solution of ferrous sulfate in the full bloom period, once every 7-10 days, and spray the leaves continuously for 2-3 times.
To prevent manganese deficiency: 1. Use 1-2kg of easily soluble manganese sulfate per acre as base fertilizer, 2. Soak seeds with 0.05%-0.1% manganese sulfate solution or spray on the leaves, spray again after 7-10 days. once.
Prevent calcium deficiency: 1. Apply 40--50kg of gypsum powder per acre during flowering. Gypsum powder is a physiological acid fertilizer. It can also be used to improve saline-alkaline soil in addition to peanut calcium and sulfur. 2. Peanut flowering period can be sprayed with 2-3% of superphosphate calcium clarification solution 40 kg.
Prevent magnesium deficiency: Spray 0.5% magnesium sulfate solution during the flowering period.
Prevent sulfur deficiency: Appropriate application of ammonium sulfate or sulfur-containing superphosphate.
Huaxian Agricultural Technology Promotion Center Jingzuo Station Shang Hongyan
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