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根处追肥是作物土壤追肥必要的有益补充,具有肥效快、利用率高施肥方便、效果显著、节省肥料等优点。但要做到科学合理,必须注意以下几个问题:一、选择适宜的肥料品种例如尿素、磷酸二氢钾、过磷酸钙、硫酸钾、草木灰浸出
Root top dressing is a necessary supplemental crop top dressing fertilizer, with fertilizer fast, high efficiency and convenient fertilization, the effect is significant, saving fertilizer and so on. However, to be scientific and reasonable, we must pay attention to the following questions: First, select the appropriate fertilizer varieties such as urea, potassium dihydrogen phosphate, superphosphate, potassium sulfate, ash leaching