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我区自1980年应用推广地膜栽培以来,对促进农作物增产,提高经济效益起到一定的作用。1981—1983年我们对地膜栽培甜瓜进行了提高病毒抵抗力的研究,现将初步结果报告于下。 一、五家渠地区甜瓜病毒病的感染期 甜瓜病毒病种类较多,它们大多是由麦二叉蚜、长管蚜、苜蓿蚜、伞形蚜,桃蚜传播,其中麦二叉蚜发生量最大,它的迁飞高峰为六月下旬。为了验证瓜秧感病与蚜虫活动的关系,进一步确定大田病害的感染期,以便提供防治依据,我们进行了病毒感染期观察。本试验设六个处理,每处理面积1.5M~2,种瓜苗130—150株,播种后分别罩上尼龙纱。瓜苗
My area since 1980 to promote the use of plastic film cultivation, to promote crop production, improve economic efficiency play a role. In 1981-1983 we conducted a study on the resistance of mulched melons to viral resistance, and the preliminary results are reported below. First, Wuqu district melon virus infection melon virus disease more types, most of them are from the wheat aphid, long-aphid, alfalfa aphid, umbrella aphids, peach aphid spread, in which the occurrence of wheat aphides The largest, its peak of migration for late June. In order to verify the relationship between the melon seedling disease and aphid activity, to further determine the infection period of field disease, in order to provide a basis for prevention and treatment, we conducted a virus infection period observation. The experiment set six treatments, each processing area of 1.5M ~ 2, 130-150 melon seedlings, were sown nylon yarn after planting. Melon seedlings