北京市通州区小麦吸浆虫发生规律

Regulation of the Wheat Blossom Midge in Tongzhou Area of Beijing

小麦吸浆虫近年来在北京市通州区发生面积不断扩大,为掌握小麦吸浆虫发生情况,找出适宜通州地区的防治技术,对其发生规律进行了调查。其活动幼虫在耕作层中的变动,有明显的季节性,春季0～7 cm土层中活动幼虫比率与5 cm土层平均地温基本呈正相关。发生程度和土壤质地、灌溉方式以及小麦品种都有一定程度的关系。

The area of wheat blossom midge occurance have grown in recent years in Tongzhou area of Beijing in. To master the wheat blossom midge, and finding the place for the prevention and control technology, we do its laws in a survey. Its activities of the larvae in cultivable layer that had obvious seasonality and spring 0-7 cm soil in the ratio of 5 cm from the activities of the larvae ground temperature basic was relevant. Occurred and the soil quality, irrigation methods and varieties of wheat have some degree.