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我们观察棉红蜘蛛的越多规律,多在1952年度棉红蜘蛛发生较严重的棉田进行,兹将情况介绍于后,作为大家研究参考:一观察经过及结果1.发现情况:1951年结合除草防蚜,铲除越冬寄主,来消灭棉红蜘蛛的目的,去找寻他的越冬寄主种类;但在挖了棉蚜主要越冬寄主,如苦买菜、夏枯草、车前子、紫花地丁,以及各种秋季转移寄主地黄、蒲公英等,并未见根部有越冬棉红蜘蛛;仅在棉枯叶上、夏枯草枯叶上(一个小叶就有150个左右)、道边土块上、大地上缝内、棉田四周的柳树上及乱草堆内发现、数量不多。1952年,木场洋淋沟上夏枯草很多,于十一月初在其四周翻开土块发现大批越冬棉红蜘蛛,尤其在靠近洋淋沟的上部最多。我们认为上部成块状的干土易于保温,故数处都是数十个一堆,甚至其中有一堆多达二百多个;亦有零散的不成堆的。深度均约在1—2寸
We observe the more rules of cotton spider moth, mostly cotton spider mites occurred in 1952 more serious cotton fields, the situation will be introduced later, as everyone’s research reference: an observation of the results and findings 1. The discovery: the combination of weeding in 1951 Aphids, eradication of the overwintering host, to eliminate the purpose of cotton spider mites, to find his winter host species; but dug in the main winter aphid host, such as bitter grocery shopping, Prunella, Plantago, Viola, and All kinds of autumn transfer host Rehmannia, dandelion, etc., and no roots are overwintering cotton spider; only on the dry leaves of cotton, Prunella on the leaves (a leaflet there are about 150), the road edge soil, the earth Within the seams, the willows around the cotton fields and the chaos heap found, a small number. In 1952, there was a lot of Prunella on the Ocean Ranch in Mutiao. In early November, a large number of wintering cotton spider mites were found turning around the soil, especially in the upper part near the Yangling Gully. In our opinion, dry bulk soils in the upper part are easy to keep warm. Therefore, there are dozens of heaps in several places, even as many as 200 or more. There are also scattered non-stacks. Depth are about 1-2 inches