采用虫孔数和隧道数鉴定玉米穗期抗螟性效果好玉米螟在玉米穗期危害日趋加重。为了控制穗期螟害，玉米穗期抗螟性研究势在必行。为此，作者自１９９０年开始对玉米穗期抗螟性分级标准进行探讨。穗期抗螟性鉴定采用接种鉴定方法。当玉米雌穗吐花丝时，在花丝上接即将孵化的... Adopting the number of wormholes and the number of tunnels to identify the effect of corn borer on the resistance to corn borer. The damage of corn borer to corn was increasing. In order to control the stem borer at the heading stage, the research on the resistance to corn borer is imperative. To this end, the author since 1990, the resistance to borer corn ear stage grading standards to explore. Identification of the resistance to the rice at the ear of inoculation method. When the corn spat floss silk, the silk hatch is about to hatch ...