论文部分内容阅读
小麦土传花叶病是一种新发现的毁灭性病害。近几年来,这一病害在我县的发生面积和危害程度都在逐步扩大和加重。在1974年,此病于我县东竹园生产队首次发现,发病面积不到1分地,当时没有引起人们的重视,到今年已发展到了8个公社的2,500余亩。小麦土传花叶病属病毒性病害,它以多粘菌为介体,在小麦种子发芽时侵入生长点内进行为害。病毒在土壤中存活,以土壤传播为主,故称土传花叶病。凡感染此病的麦田,轻者减产二、三成,重者减产五成以上。
Soil mosaic disease in wheat is a newly discovered devastating disease. In recent years, the incidence of this disease in our county and the degree of harm are gradually expanding and aggravating. In 1974, the disease was first discovered by the production team of Dong Zhu Yuan in our county. The area of disease was less than 1 minute. At that time, no attention was paid to it. By this year, it had grown to over 2,500 acres in 8 communes. Wheat soil mosaic disease is a viral disease, which uses polymyxa as a mediator, invades the growth point in the wheat seed germination damage. Virus survives in the soil, with soil-based transmission, so that soil-borne mosaic disease. Where the disease infected wheat fields, the light output cuts two or three percent, those who lose weight more than 50%.