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Constants in the soil nutrient elements of nitrogen, phosphorus, potassium usually can not meet the needs of crop growth

Date:2017-04-15

Constants of nutrient elements in the soil nitrogen, phosphorus, potassium usually can not meet the needs of crop growth, the need to use nitrogen, phosphorus and potassium fertilizer to make up. And micronutrient elements in addition to the chlorine in the soil is not short of, in addition several kinds of nutrient elements

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