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花生是一种对铁敏感的作物。铁能促进花生氮素代谢的正常进行与叶绿素的形成,并具有增强植株的抗病能力。花生缺铁时叶片失绿变黄,影响光合作用和碳水化合物的形成;酶的活性降低,影响氮素代谢和蛋白质的合成;根瘤固氮能力减弱,并限制了对氮、磷的吸收。因此,必须重视花生的铁营养问题。土壤中铁含量是比较高的,一般都在3％左右。但是,引起缺铁的原因是土壤条件,而对作物生长发育起作用的主要是有效态铁。我们考察了豫东、豫北花生产区,发现花生普遍
Peanuts are a type of iron-sensitive crop. Iron can promote the normal nitrogen metabolism of peanut and chlorophyll formation, and enhance the resistance of plants. When the peanut is deficient in iron, the leaves turn green and turn yellow, affecting the photosynthesis and the formation of carbohydrates. The enzyme activity is reduced, which affects the nitrogen metabolism and the protein synthesis. The nitrogen fixation ability of nodules is weakened and the absorption of nitrogen and phosphorus is limited. Therefore, we must pay attention to iron nutrition of peanut. Iron content in soil is relatively high, generally about 3%. However, the cause of iron deficiency is due to soil conditions, while the main role of crop growth and development is the effective iron. We examined the eastern part of Henan, northern flower production area, found peanuts common