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近年来,对我国南方稻区发生普遍而严重 的水稻褐鞘症的诱发原因有两种看法,一种认 为该症状是由稻叶鞘腐败病菌Sanocladium ory- zae(=Acrocylindrium oryzae)的侵染引起, 另一种认为褐鞘稻株上的跗线螨是引起该症状 的主因,台湾稻区的斯氏狭跗线螨Steneotarso- nemus spinki已被证实为植食性螨种。在四 川稻区,我们曾进行多点普查和田间系统调查, 水稻生长期间的田间优势螨种为鼹鼠跗线螨 Tarsonemus talpae Schaarschmidt,该螨在水稻上
In recent years, there are two opinions on the causes of the widespread and serious brownish sheath blight in the rice area of southern China. One of them is thought to be caused by the infection of Sanocladium oryzae (= Acrocylindrium oryzae) Another thought that Trichogramma mites on the brown sheath rice plants is the main cause of this symptom. Taiwan’s Steineromycosis sp. Has been proven to be herbivorous mite species. In the Sichuan rice area, we conducted multi-point census and field system surveys. During the rice growing season, the dominant species of mites was Tarsonem talpae Schaarschmidt, which was found on rice