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为害高粱的钻心虫包括高粱条螟、玉米螟等由于种类复杂,给防治工作带来不少困难,但以哪种钻心虫危害高粱最为严重,尚不十分清楚。我所在1964年进行了一些观察,现将有关资料整理如下。 春分(3月20日)时通过高粱秸秆的剥查,发现三种越冬钻心虫,列表于下。 从上表看出,在高粱茎秆内越冬的主要是玉米螟。 从5月底开始,以五点取样法,每点20株,定点每3天调查一次卵情。从高粱全生育期调查结果来看,大都是玉米螟的卵块,少数是粟灰螟的卵块,很少发现高粱条螟卵块,仅在5月29日、6月8日两次调查粟灰螟卵块时,共发现三块高粱条螟的卵块。
Damage to sorghum borer insects, including sorghum borer, corn borer and so on due to the type of complex, to prevent and control work to bring a lot of difficulties, but what kind of borer harm the most serious sorghum, is not yet very clear. Some observations made by me in 1964 are summarized below. Spring vernal equinox (March 20) through the stripping of sorghum straw, found three wintering borers, the list below. As can be seen from the above table, the main wintering corn in the sorghum stem is the corn borer. From the end of May, five sampling methods, 20 points per point, sentinel survey every 3 days. From the survey of sorghum whole growth period of view, most of the corn borer egg masses, a small number of the eggs of the corn borer, rarely found in sorghum borer egg masses, only on May 29, June 8 twice to investigate the corn borer During the egg mass, a total of three eggs of the sorghum borer were found.