摘要
通过对三化螟生物学特性及发生特点的试验和观察，并结合湖北省三化螟实际发生和为害情况进行了较系统的分析和研究。结果表明，三化螟种群数量变动和为害程度主要受到年度间的气候、栽培制度、品种、越冬作物、防治水平等因子的综合影响。因子间（在生物学上）相协调时，可造成三化螟大发生和严重为害；因子间不相协调时，则维持在一般水平或轻度发生；当因子间作用特别突出时，就会成为当年三化螟种群数量上升或下降的主导因子。掌握这些主要因子年度间的变化，对做好三化螟的预测预报和综合防治具有重要意义。
Not only experiments and observations on biological and occurring charateristics of Tryporyza incertulas(Walker),but also analyses and researches on its actual incidence and damage in Hubei Province were conducted.Quanity change and damage degree of the pest were affected mainly by acombined effect of climate,cultivation system,varieties and over-wintering crops. When the above factors were coordinated,T. incertulas occurred extensively and caused serious damages. When the above factors were not corrdinated,T. incertulas occurred in light degrees. It is very important to understand correctly change of these factors in years for forecast and integrated control of the occurrence of T. incertulas.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1996年第1期35-38,共4页
Journal of Huazhong Agricultural University
基金
国家"八五"科技攻关资助
关键词
水稻
三化螟
发生规律
种群数量
防治
Tryporyza incertulas(Walker),fluctuation of population,major factor,control strategy
