'The alkaline plant foliar nutrient solution' was made according to the principle that plant blades absorb positive ions better from alkaline medium than from acid medium and by using so lation of reversible colloid. 碱性植物叶面营养液是根据植物叶片从碱性介质中吸收阳离子比较优越的原理,并利用可逆胶体的胶溶作用配制而成的。