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近年来,豫东、豫北花生区,花生黄化症发生普遍,触目皆是,且有逐年扩大的趋势。由于叶片黄化,影响了光合作用的正常进行,并导致其他病害发生。此病发生在6—7月,发病时花生下部叶片一般仍为绿色,顶部叶片黄化,后渐至发白,主脉呈铁锈色不规则长条斑,严重时叶缘变褐而死亡后脱落,造成植株光杆,一般减产15—25％。 此病据科学试验,属于生理病害,是花生植株体内缺铁的一种生理反应。其主要防治方法是:
In recent years, the pests in the eastern part of Henan and northern part of Henan Province have perennial occurrence of peanut etiocytosis, which are both visible and have been expanding year by year. The yellowing of the leaves affected the normal photosynthesis and led to other diseases. The disease occurred in June-July, the incidence of peanut lower leaves are generally still green, the top of the leaves yellowing, gradually white to pale, the main vein was irregular rust colored stripes, severe leaf margin brown and died Fall off, resulting in plant polished rod, the general reduction of 15-25%. This disease is a scientific experiment, which belongs to physiological diseases and is a physiological reaction to iron deficiency in peanut plants. The main control methods are: