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一、引言水稻系我國南部的主要粮食作物,在它秧苗时期正好是負泥虫猖獗的时候,往往整塊秧田受其侵蝕造成嚴重災害,卽使秧苗能复活,对后期生長和產量的影响也很顯著。負泥虫以山区發生多,貴州位于西南云貴高原,负泥虫狷獗現象在湄潭是常見的。本工作系作者于1941—1943年在前浙江大学植物病虫害系工作时(当时校址迁在貴州湄潭)所進行的,当时作者限于水平,研究条件又差,故未能作全面研究。然十余年來国
I. INTRODUCTION Rice is the main grain crop in the southern part of China. When it is just the time for the seedlings to rampant, the entire seedling is often eroded by the erosion and causes serious disasters. The seedling can be resurrected and the effect on the late growth and yield is also Very significant. Negative insect mites occur more in mountainous areas, while Guizhou is located in the Yunnan-Guizhou Plateau in the southwest. The phenomenon of negative insect mites is common in Meitan. This work was carried out by the author from 1941 to 1943 at the former Department of Plant Diseases and Insect Pests, Zhejiang University (when the site was relocated to Meitan, Guizhou Province) when the authors were limited in their level and their research conditions were poor. Therefore, they failed to conduct a comprehensive study. However, more than ten years to the country