Potato fertilization "three essentials"
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Second, we must increase the application of organic fertilizer. Organic fertilizer is a complete fertilizer that contains a large amount of trace elements necessary for the growth of potatoes.
Third, we must use the base fertilizer correctly. The base fertilizer is mostly mixed with organic fertilizer or organic fertilizer and inorganic fertilizer. In the case of sufficient fertilizer, it can be applied comprehensively to increase soil fertility; if the fertilizer is limited, it is more reasonable to use it as a seed fertilizer. The amount of base fertilizer generally accounts for more than 2/3 of the total fertilization amount. The base fertilizer is mainly based on decomposed farmyard manure, and a certain amount of fertilizer is added. The specific fertilization amount is: 667 square meters of 1500 kilograms of land, organic fertilizer 1500-2500 kilograms, urea 20 kilograms, calcium 20-30 kilograms, potassium fertilizer 10-12 kilograms, potato to calcium, magnesium, sulfur The medium and trace elements are required to be large. In order to improve the quality, it can be combined with the prevention and control of pests and diseases for root dressing. The 667 square meters is sprayed with 400 grams of Gale foliar fertilizer into 400 times, and the effect is obvious in the early stage. The amount of boron fertilizer used is 0.5-1 kg for 667 square meters. The method of use is better for base fertilizer, and it can also be applied as root spray. The spraying concentration is 0.2%.
Huaxian Liu Huimin