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芝麻茎点枯病(Macrophominaphaseolina)俗称“着雾”,又称黑杆病,是影响芝麻产量的主要病害。1988年我市芝麻茎点枯病发生7418亩,占总播面积的76.2%;因病绝收面积3195亩,损失产量20万公斤以上,直接经济损失70万元。为此我们于1988—1991年对芝麻茎点枯病的发生危害和防治技术进行了研究。一、芝麻茎点枯病发病因素的调查1.气候条件与发病关系:据我们连续4年的调查,芝麻茎点枯病的发生与温、湿度关系较大,该病在芝麻生育期内有两个发病危害期:一为播种后至苗期,土壤湿度大时易发病,造成烂籽和烂苗;二是在盛花结朔果后发
Sesame stem spot (Macrophominaphaseolina) commonly known as “fog”, also known as black rod disease, is the main disease affecting sesame production. In 1988, 7418 mu of sesame-leaf spot blight occurred in our city, accounting for 76.2% of the total sown area; and 3195 mu of area due to illness was abolished, with a loss of more than 200,000 kg and a direct economic loss of 700,000 yuan. To this end, we conducted in 1988-1991 sesame blight on the occurrence and prevention techniques. First, the sesame stem spot disease morbidity survey 1. Climatic conditions and the incidence of disease: According to our continuous investigation for 4 years, the occurrence of sesame blight and temperature, humidity, the disease in the sesame growth period Two risk of disease: one after sowing to seedling stage, easy to disease when soil moisture, resulting in rotten seeds and rotten seedlings;