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甘蔗二点螟(Chilo infuscatellus Snel len)原是南方甘蔗的主要害虫,1972年随蔗种带进我场,甘蔗受害逐年加重,平均螟害枯心苗率20.3％,螟害株率50.9％,最高达97.4％。
The former was the main pest of sugarcane in southern China. It was brought into the field with sugarcane in 1972, and the damage of sugarcane increased year by year. The average rate of stem borer was 20.3%, the rate of stem borer was 50.9% Up to 97.4%.