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芝麻是南阳地区主要经济作物之一,常年种植面积100多万亩,占整个秋作物面积的10%左右。但芝麻易受水渍、病害,产量低而不稳。为此,我们对芝麻叶部病害进行了三年研究,并试验出了对叶枯病进行防治的经济有效方法,增产显著,已大面积应用于生产。一、芝麻叶病发生种类及严重度调查发生在芝麻叶上的真菌病害有黑斑病、叶斑病、叶枯病、白粉病等。其中,叶枯病发生危害最为严重,是造成芝麻减产的主要病害。8月上旬被害株率达98.6—100%,严
Sesame is one of the main cash crops in Nanyang area, perennial planting area of more than 100 million mu, accounting for about 10% of the entire autumn crop area. However, sesame susceptible to waterlogging, disease, low yield and instability. For this reason, we conducted a three-year study on leaf disease of sesame seeds and tested out a cost-effective method for controlling leaf blight. The yield was significantly increased and large-area production was applied. First, the type and severity of the occurrence of sesame leaf disease investigation Occurred in the sesame leaf fungal diseases are black spot, leaf spot, leaf blight, powdery mildew and so on. Among them, the most serious damage caused by leaf blight, is the main cause of sesame yield reduction. In early August, the rate of victim plants reached 98.6-100%, strictly