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绿豆在南阳地区历年种植面积达70—80万亩,占夏播粮食作物的9—10％。近些年来,绿豆由于遭受黑斑病危害,大幅度减产甚至绝收,种植面积日益减少,市场供应紧张。我们于1980—1983年对其进行了试验研究。从病理学上初步认识了病害,试验出了经济有效的防治方法,并在全区推广,取得显著增产效果。一、病株症状及发病危害特点在罹病的叶上先出现红紫色小斑点,后
Mung bean in Nanyang over the years planted area of 70-80 million mu, accounting for summer sowing 9-10% of food crops. In recent years, mung bean due to the risk of septoria disease, a substantial reduction or even absolute harvest, planting area is declining, the market supply is tight. We conducted a pilot study in 1980-1983. From the pathological preliminary understanding of the disease, test out a cost-effective prevention and treatment methods, and in the region to promote and achieve significant yield increase. First, the characteristics of disease symptoms and pathogenesis in the diseased leaves appear purple purple spots first, after