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1958-1961年,我所对石河子地区普通甜菜象鼻虫进行了系统研究.根据生物学、生态学规律,初步认为甜菜象鼻虫的消长,是许多因素综合作用的结果,其中气象因子起主导作用.一、甜菜象鼻虫大发生,首先决定于从卵期开始至整个发育周期(当年5月至翌年4月),特别是幼虫发育期的气候条件.在有利的条件下,越冬虫口密度往往较高或甚高.按石河子地区四年来的发生情况,可分为普通发生年、猖撅发生年、猖发偏轻年和普发偏轻年.1958年5—8月分气温相对稳定,降水均匀,月平均存20—40毫米,对甜菜象鼻虫产
From 1958 to 1961, we systematically studied the common beet weevil in the Shihezi region.According to the laws of biology and ecology, the growth and decline of beet weevil were preliminarily thought to be the result of a combination of many factors, of which the meteorological factors dominated First, beetle weevil occurred, first decided from the beginning of the egg to the entire development cycle (from May to April next year), especially the larval development of climatic conditions in favorable conditions, overwintering population density Often higher or very high.According to the occurrence of Shihezi region in the past four years, it can be divided into common occurrence year, rampant year, rampant partial light year and Pratt & Whitney partial light year .In May-August 1958, the temperature was relatively stable , Uniform precipitation, the average monthly deposit of 20-40 mm, on the beet weevils production