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玉米为广西主要粮食作物之一,南宁地区栽培普遍,一年可种植三(禾造)。但由于玉米螟的发生为害,各(禾造)玉米并不能保証应有的产量,特別是夏玉米常因严重受害而影响产量,甚至顆粒无收。为了及早消灭这一害虫,我們几年来进行了試驗研究。下面就南宁郊区該虫的发生发展情况及其与利用赤眼蜂防治关系方面的有关問題,作一初步报道,借供参考。
Corn is one of the main grain crops in Guangxi. It is commonly cultivated in Nanning and can be planted three times a year. However, due to the occurrence of corn borer, each (Wo) made of corn and can not guarantee the proper yield, especially the summer maize often due to serious damage and affect the yield, and even crop failure. In order to exterminate this pest as soon as possible, we conducted pilot studies over the years. The following on the outskirts of Nanning, the occurrence and development of the pest and the use of the relationship between the prevention and treatment of Trichogramma related issues for a preliminary report, for reference.