Potato fertilizer technology

With the adjustment of planting structure, more and more farmers grow potatoes. However, due to the influence of traditional fertilization, only fertilization and diammonium are used as base fertilizers for potato fertilization without top dressing. This fertilization method is unscientific. The average amount of fertilizer used by the northern potato is (net) nitrogen 10 kg/mu, phosphorus 5 kg/mu, and potassium 5 kg/mu, equivalent to 300 kg of urea, 64% diammonium 150 kg, and 50% sulfuric acid Potassium 150 kg. In order to obtain high-quality and high-yielding potatoes, fertilizers should adopt the following fertilization methods during planting:

1. Base fertilizer. The basal fertilizer is applied with high-quality farmyard fertilizers and chemical fertilizers. All the farmyard fertilizers and phosphate fertilizers, 50% nitrogen fertilizer and 70% potassium fertilizer are used as base fertilizers. Fertilization method is planting before the ditch or acupuncture, fertilization depth of 15 cm.

2. Top dressing. Top dressing twice: 1 seedling fertilizer, after the Qimiao, promote the growth of stems and leaves, fertilization amount of 2/3 of the remaining nitrogen fertilizer, fertilization method: the other side of the water applied strain. 2 To promote potato fertilizer, before planting and during potato production, the dosage is: 1/3 nitrogen fertilizer and 30% potassium fertilizer. Fertilization method: Application or hole application, depth 10 cm to prevent loss of fertilizer.

Potatoes are more sensitive to zinc and boron fertilizers. They can use foliar spraying methods to spray zinc and boron fertilizers, 50-70 kilograms of fertilizer per acre, spray once every 7 days, and spray 2-3 times.

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