How to fertilize potatoes?

How to fertilize potatoes? Please introduce the method of applying fertilizer to potatoes can refer to the following methods: apply sufficient base fertilizer based on organic fertilizer, and apply sufficient bio-organic fertilizer, that is, on the basis of 2500-3000 kg of mature organic fertilizer per mu, 45-50 kg of bio-organic fertilizer per mu. When digging the planting hole in the soil preparation, the base fertilizer and the soil in the planting hole are fully mixed evenly, and then it can be planted. When the seed fertilizer base fertilizer is insufficient or the cultivated land is not enough to apply fertilizer, 15kg / mu special compound fertilizer is often applied as seed fertilizer when sowing. The application of seed fertilizer is mainly carried out by ditch application or hole application, but the fertilizer should not be in direct contact with the seed potato so as not to burn the seed potato. It can be seen that the skillful application of manure and topdressing should be carried out early and skillfully, generally divided into two stages: the first time, combined with middle ploughing and soil cultivation, the water was watered with 500kg 700 kg of rotten human feces and urine; the second time, in the bud stage, black plus white biological fertilizer or special compound fertilizer was applied to 10kg / mu. Foliar topdressing, from the beginning of leaf development of potato seedlings, 0.1% magnesium sulfate, 0.3% potassium dihydrogen phosphate and 1000 times triacontanol mixture were applied every 7 to 10 days, and the leaves were sprayed for 3 times and 5 times to evenly wet the leaves. During the period of rapid expansion of potato underground tubers supplemented with magnesium fertilizer, 50 grams of magnesium sulfate was applied to each plant, spraying clear water or rotten feces, or digging shallow ditches around the plants to promote the rapid expansion of underground tubers. Click to get more potato planting techniques click to get more vegetable planting techniques