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合理使用肥料是获得高产的重要环节。长期存在着只有植物的根系能够从土壤吸收水分和无机元素的见解,但是近年来开始采用基于植物能通过叶片吸收营养物质为依据的根外追肥。根外追肥时使用液体肥料或者粉状肥料喷布植株。为了治疗患失绿病的植株早就采用了喷布微量—大量元素肥料的方法。但是以后许多学者得出结论:认为由于根外追肥而加强叶片的光合作用和改善了根系的营养物质的供应。这就同样地促
Rational use of fertilizer is an important part of high yield. There has long been a perception that only the plant’s roots can absorb moisture and inorganic elements from the soil, but in recent years the introduction of root top-dressing based on the ability of plants to absorb nutrients through leaves has begun. When using top-dressing fertilizer or powdered fertilizer to spray plants. For the treatment of plant diseases suffering from chlorosis has long been used to spray trace - a large number of elemental fertilizer methods. However, many scholars later concluded that it is believed that leaf top photosynthesis and root supply of nutrients are enhanced due to top dressing. This is the same