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锰是1922年由J.S.McHargue确定为植物中必不可少的微量营养元素。它与叶绿体的构成、光合作用中水的光解以及植物体内的氧化还原等有密切关系。植物体严重缺锰会引起呼吸作用等一系列代谢紊乱,影响植物生长和产量。而含锰过多,则使植物中毒。土壤中的锰除总锰以外,可分成水溶态锰,代换态锰和易还原态锰,总称为活性锰。活性锰和全锰的比值,即为有效率,反映土镶中锰的供给能力。植物能直接吸收利用水溶态锰和代换态锰,可用1N NH_4Ac提取来表示。易还原锰经过还原作用,水溶态锰和代换态锰也可为作物吸收利用。研
Manganese was identified by J.S. McHargue as an essential micronutrient in plants in 1922. It is closely related to the formation of chloroplasts, the photolysis of photosynthesis water and the redox of plants. Plant a serious shortage of manganese can cause respiratory effects and a series of metabolic disorders, affecting plant growth and yield. The excessive manganese, the plant poisoning. In addition to the total manganese manganese soil, can be divided into water-soluble manganese, substituting manganese and easily reduced manganese, collectively known as the active manganese. The ratio of active manganese to total manganese is efficient, reflecting the supply of manganese in the soil. Plants can directly absorb the use of water-soluble manganese and substitutional manganese, available 1N NH_4Ac extraction to represent. Easy to restore manganese after reduction, water-soluble manganese and substituted manganese can also be used for crop absorption and utilization. research