npk 15 15 15 vietnam phú mỹ giá bao nhiều - An Overview
● In accordance with different soil,for example,fertilizer made up of potassium sulfate just isn't suited to paddy area and acid soil,fertilizer that contains ammonium ion will not be suited to alkali soil,and so on.NPK fertilizer is a complex fertilizer comprised primarily of the three Major nutrients needed for nutritious plant growth. The agri