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近年来,晋州市夏玉米倒伏现象严重。2000年全市种植夏玉米面积2万hm~2(公顷),其中就有4666.7hm~2有不同程度的倒伏现象,占夏玉米总面积的23.3％以上,个别地块倒伏率达80％以上,从而严重影响了夏玉米产量的提高。通过调查总结发现,造成玉米倒伏的主要原因是栽培管理措施不当,病虫严重危害以及异常气候等因素造成的。据此,针对以上原因,总结出防治夏玉米倒伏的四项关键技术措施如下:
In recent years, Jinzhou summer maize lodging is serious. In 2000, the city planted summer maize with an area of 20,000 hectares, of which 4666.7 hm ~ 2 had different degrees of lodging, accounting for more than 23.3% of the total summer maize area. The lodging rate of individual plots reached more than 80% Thus seriously affecting the increase of summer maize production. The investigation concluded that the main causes of maize lodging due to improper cultivation and management practices, pests and diseases caused by serious harm and abnormal climate and other factors. Accordingly, for the above reasons, summed up the four key technical measures to prevent summer corn lodging are as follows: