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　　 The potato is a high yield and is a kind of hi-fertilizer sulfur crop. Potassium has the most potassium demand for nitrogen, phosphorus and potassium nutrients during the growth process . Nitrogen followed by less phosphorus. Experiments show that the production per 1000 kg of potato tubers, the nitrogen absorption will take about 5 kg, 2 kg phosphorus, potassium 10 kg, a sulfur 1 kg, 1 kg calcium, magnesium, 1 kg; potato production cycle, when the tuber of which peak fertilizer requirement period. In general Mushi manure 4000 --5000 kg basis, Mushi nitrogen 13 - 15 kg of pure phosphorus 8--10 kg of pure potassium 10--12 kg. In the potato tuber of spraying foliar 2--3 times. Do administered potassium chloride and chlorine ions in the fertilizer.
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