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山东省现行的二代棉铃虫防治指标为,二代百株累计卵量90粒。卵量调查是自各代的始卵前定点定株,到产卵终每天或隔一天调查一定数量棉株的着卵量累计而得,费工费时,在实际应用中,农民不易掌握,为寻找便于棉农掌握的调奄方法,自1986至1989年每年在二代棉铃虫百株累计卵量达到90粒左右时的当天,对部分乡(镇)的同类棉田进行普查5块,每块田对角线5点取样,查100株,统计一次调查百株卵(虫)量。
Shandong Province, the current second generation cotton bollworm prevention and control indicators, the second generation of 100 strains of accumulated eggs 90. Survey of eggs from the generation of pre-ovine sentinel plants, to the end of each day after oviposit or survey a certain number of oviposition amount of cotton derived from, working time, in practical applications, farmers are not easy to grasp, in search of Convenient to cotton farmers to master the method of adjustment and death, from 1986 to 1989 each year in the second generation of cotton bollworm when the cumulative number of eggs reached 90 or about the same day, part of the township (town) similar cotton fields were census 5, each field 5 o’clock angle sampling, check 100, a survey of a hundred eggs (worms) amount.