【摘 要】
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Potassium (K~-) is an essential macronutrient for all livingorganisms and large amounts are required for plant growthand development. In many regions of Asia K~+-fertilizationhas been neglected and so
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Potassium (K~-) is an essential macronutrient for all livingorganisms and large amounts are required for plant growthand development. In many regions of Asia K~+-fertilizationhas been neglected and soils have become K~+-depleted. K~+-deficiency in the
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