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近年来,花生种植面积呈逐年扩大趋势。伴随而来的,花生病害也相应增加,尤其黄叶问题越来越突出,由于黄叶造成植株生长势弱、早衰、进而诱发叶部病害,成为影响花生产量和品质的一个重要因素。针对上述情况,结合几年来的工作实践,和大家探讨一下黄叶问题的成因及解决办法。一、花生黄叶具体情形有了新变化1、从发病时间上看,过去每到7—8月份,常会大面积发生花生生理性缺铁导致的黄叶症状,这两年,在春花生上亦有此表现,时间集中在4月下旬—6月中旬,但原因远比缺铁因素复杂得多。
In recent years, peanut acreage has been increasing year by year. Accompanied by the corresponding increase in peanut diseases, especially the yellow leaf problem is more and more prominent, due to weak yellow leaves caused by plant growth, premature aging, and then induce leaf disease, become an important factor affecting the yield and quality of peanut. In response to the above situation, combined with years of work practice, we discuss the causes of yellow leaf problems and solutions. First, the peanut yellow leaves have a new change in the specific situation 1, from the time of onset point of view, in the past every 7-8 months, often a large area of peanut physiological iron deficiency caused by yellow leaf symptoms, the past two years, on the spring peanut There are also performance, the time concentrated in late April - mid-June, but the reasons are far more complex than iron deficiency.