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1.矿质营养植物在生长发育过程中,从土壤或其他外界环境(水、气等)中吸收含有矿质元素(无机盐)的化合物,供给自身生长发育的过程。一般除指碳、氢、氧以外,主要由根系等器官从土壤、肥料中吸取的氮、磷、钾、硫、钙、镁、铁、铜、锰、锌、钼和氯等。植物生活所必须的营养元素缺乏时,在外表上显出特殊的营养元素缺乏症。2.肥料三要素在大量元素中,植物生长时对氮、磷、钾三种元素的需要量更大。而且土壤中所含的量往往满足不了植物的需要,所以通常把氮、磷、钾三种元素又叫做肥料三要素。
1. Mineral nutrition plants in the process of growth and development, from the soil or other external environment (water, gas, etc.) containing mineral elements (inorganic salts) compounds, supply their own growth and development process. In addition to carbon, hydrogen and oxygen, nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, iron, copper, manganese, zinc, molybdenum and chlorine are mainly extracted from soil and fertilizers by roots and other organs. When the nutrients necessary for the life of a plant are scarce, they show a special nutrient deficiency on the outside. The three elements of fertilizer In a large number of elements, plant growth on the nitrogen, phosphorus and potassium three elements of greater demand. And the amount of soil contained often can not meet the needs of plants, so usually nitrogen, phosphorus and potassium three elements called fertilizer three elements.