葡萄红蜘蛛是最有威胁性的害虫之一。我县葡萄产区从4月葡萄展叶期开始发生,直至落叶期频繁为害。葡萄红蜘蛛虫体很小,肉眼难以辨认,它繁殖快,密度大,世代重叠,容易被果农所忽视,而造成无法弥补的损失。葡萄红蜘蛛为害叶柄、叶片、果穗梗、浆果等,新梢上的所有器官,均可被害。新梢基部被害后,表面呈褐色颗粒状隆起,如象癞皮状;果穗梗被害后,呈褐色,脆嫩组织容易折断;果粒 Grape Red Spider is one of the most threatening pests. Grape vineyards in my county from the beginning of April leaf stage, until the deciduous frequent damage. Grape spider red spider body is very small, the naked eye is illegible, it breed fast, density, generation overlap, easily ignored by farmers, resulting in irreparable damage. Grape red spider damage Petiole, leaves, ear stems, berries, etc., all the shoots of organs, can be killed. Shoot the new shoots after the base, the surface was brown granular uplift, such as scallop leather; ears after browning, brittle tissue easily broken; fruit