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褐稻虱是嗜食水稻的迁飞害虫,喜温爱湿,属偏南虫种,分布甚广,从热带到暖温带地区都能生存繁殖.我国褐稻虱分布,大致以长城为北界,辽宁的盘锦和四川的雅安地区偶而能见,淮河以南较为普遍发生,长江以南更为猖獗流行.虫源、食料、气候和天敌等是影响褐稻虱地理分布的自然因素.我国幅员辽阔,地势起伏,气候多变,作物布局多样,形成了褐稻虱极为复杂的地理分布.本文根据温度条件与褐稻虱生长繁殖关系,分析我国稻区褐稻虱越冬界线、发生代数和区域分布,提出褐稻虱的气候区划.
Brown planthopper is migratory pests on rice, like the warm love wet, is a partial south worm species, is widely distributed, from the tropics to the warm temperate zone can survive and breed .Brown brown planthopper in China, roughly to the north of the Great Wall, Panjin in Liaoning Province and Ya’an in Sichuan Province occasionally see south of the Huaihe River is more common, south of the Yangtze River is more rampant.Elegs, foodstuffs, climate and natural enemies are the natural factors that affect the geographical distribution of brown planthopper.Our country is vast , The terrain fluctuates, the climate is changeable, the crop layout is various, formed the extremely complex geographic distribution of the brown planthopper.Based on the relationship between the temperature and the growth and reproduction of brown planthopper, the paper analyzed the overwintering borderline, occurrenceal algebra and regional distribution of brown planthopper , Put forward the climate division of brown planthopper.