Potato specialty fertilizer

1 potato Fertilizer Demand Rule: Potato most potassium, nitrogen, followed by phosphorus less. In addition, high demand for Boron potato. Nitrogen, phosphorus, potassium, and potassium on yield maximum, followed by nitrogen and phosphorus with minimal impact on potato production. Partial nitrogen or partial Potassium Fertilizer on Yield are large, especially the partial nitrogen often result in a substantial cut. 3, fertilization guidelines: According to potato production soil nutrient status, potato fertilization must pay attention to organic fertilizer to improve soil organic matter content, soil fertility, taken with the use of organic manure and fertilizers, of applied fertilizer strategy. Note that the chemical fertilizer nitrogen, phosphorus and potassium ratio is reasonable, appropriate to reduce the amount of fertilizer applied per unit area. In areas where conditions permit, and actively promote soil testing and fertilizer, through sampling and analysis of soil samples, put forward reasonable nitrogen, phosphorus and potassium ratio, while the combined application of the right amount of trace elements in the production or preparation of a potato special formula fertilizer used directly for potato production, promote potato production increase. It must be noted that the case of potato bogey chlorine crops, fertilizers such as chlorine can not be administered potassium chloride, ammonium chloride and chlorine ions fertilizer, fertilizer and the like. 4, various growth stages potato fertilization methods, the required number of different types and nutrients. From germination to seedling stage, because the tubers are rich in nutrients, it absorbs less nutrients, accounting for about 25% of the whole growth period. Tuber formation of the tuber expansion period, due to the rapid formation of a large number of stems and tubers grow and expand, so absorb nutrients most, accounting for more than 50% of the whole growth period. Accumulation of Starch reduce nutrient absorption, accounting for about 25% of the whole growth period. Circumstances of each growth period absorb nitrogen, phosphorus, nitrogen and potassium are Seedlings need more medium-term need more potassium, phosphorus less need throughout the growing season. Combined with potato shoots, belowground growth characteristics and fertilizer requirement, potato fertilization techniques should be followed in order to Shi Ying Wo organic fertilizer, fertilizer supplement, basal main principle of appropriate dressing. 4.1 Fertilizers heavy potato tuber underground tubers are the main organs of crop products, conduct field dressing inconvenient. Therefore, we must pay attention to basic fertilizer and seed fertilizer use. All requirements of farmyard manure before plowing applicator, Ying Wo brand of organic fertilizer, available fertilizer, trace fat in sowing as seed or fertilizer fertilizing seeds next banding. Such as base fertilizer shortage in fat trees of applied foliar spray fertilizer. Basal amount is generally more than 2/3 of the total amount of fertilizer, basal plate of potatoes to meet Wo special fertilizer, Adding a certain amount of potassium. Specific amount of fertilizer: in yield 3-4 tons of land, Shi Ying Wo have special fertilizer 80-150 kg of potatoes, the potato specialty fertilizer applied at 2 ~ 3cm from tubers, avoid direct contact with the seed after fertilization casing; potato specialty fertilizer can also be mixed with organic manure application, can improve fertilizer utilization.