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在湘北油稻稻三熟制区晚稻超高产栽培条件下，进行了两系杂交组合培两优特青“三虫两病”发生特点、种群消长、演替规律及影响种群变动因素的研究。结果表明：水稻超高产栽培条件下更有利于病虫繁衍，发生量和危害程度均有加重趋势，在时空结构及危害特点上都出现了一些新的变化。
Under the conditions of super-high-yielding cultivation of late rice in the three-cropping system of oil-rich rice in the northern part of Hunan province, the characteristics of “three diseases and two diseases” of two-line hybrid cultivar Peilianteqing were studied, and the population growth, succession and the factors influencing population fluctuation were studied. The results showed that the rice was more conducive to the multiplication of pests and diseases under the conditions of super high yielding cultivation. The occurrence and harm degree tended to increase, and some new changes appeared in the spatiotemporal structure and harm characteristics.