During the seedling stage, nitrogen fertilizer was applied to supplement the phosphorus and potassium fertilizers during the growth period, and molybdenum and manganese fertilizers were added. The production of 1,000 kg of Dutch beans requires 2.4 kg of pure nitrogen, 0.8 kg of phosphorus pentoxide and 5.7 kg of potassium oxide. Before planting, 2500 kg of organic fertilizer was applied per mu, 100 kg of bio-organic compound fertilizer, 20 kg of urea, 25-30 kg of superphosphate, 40 kg of potassium sulfate, and 0.5-1 kg of manganese sulfate. Into the extension of the cranberry period, the first topdressing, applied 3 kg of pure nitrogen per acre, potassium oxide 4 ~ 6 kg. During the flowering and poding period, the second top dressing was applied, and 2~2.5 kg of pure nitrogen was applied per acre, and 3.5 kg of potassium oxide was applied. Spraying 0.02-0.05% ammonium molybdate during flowering.
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