摘要
摘要:棉田棉铃虫的卵株率与卵密度间相关极显著,因而利用有卵株率取代卵密度来进行棉铃虫发生期的分析和确定防治指标,易于被接受和掌握。同时,简化棉铃虫的查卵方法,对于棉铃虫的测报调查和指导大面积的防治具有重要意义。
There are close relationship between the rate of plant harboring cotton bollworm eggs and the density of eggs in cotton field. It is easy to accept and grasp by applying the rate of plant with eggs instead of the density of eggs to analyze the occurrence time of cotton boll worm and determine the control index. The simplified the investigation method has important significance in the forecasting of the cotton boll worm and guiding its control in large areas.
出处
《植保技术与推广》
2002年第2期5-7,共3页
Plant Protection Technology and Extension
