论文部分内容阅读
地下害虫属于多食性害虫,其活动为害期间生活在土中,并以为害作物地下部分(包括种子)为主,或为害作物近地面部分,造成缺苗断垄,重者要毁种重种,造成减产。近年来,受暖冬气候影响,为地下害虫的发生危害创造了适宜的环境条件,加之随着耕作栽培管理制度、农田生态环境等因素的影响,以及秸秆还田面积持续增加,提供了丰富的食料,每年都有部分小麦田块造成不同程度的危害,有的田块甚至要毁种重种,且呈现逐年加重发生趋势。因此,秋播期防治小麦地下害虫是保证小麦一播全苗的关键措施之一,也是奠定小麦丰产丰收的基础。一、地下害虫发生为害特点地下害虫为害小麦主要
Underground pests are multi-food pests, living in the soil during the activities of the victim, and to harm the underground parts of the crop (including seeds) or crop damage to the ground near the ground, resulting in lack of seedlings broken ridge, heavy to heavy seeds, Cause cut. In recent years, due to the influence of warm winter climates, suitable environmental conditions have been created for the occurrence of underground pests. In addition, with the influences of tillage and cultivation management system, farmland ecological environment and the continuous increase of straw returning area, abundant foodstuffs Every year, some of the wheat fields cause different degrees of harm, and some fields even have to be devastated, with a trend of increasing year by year. Therefore, the autumn sowing to control wheat underground pests is one of the key measures to ensure that the whole plantation of wheat is sowing, and it also lays the foundation for the bumper harvest of wheat. First, the occurrence of pests underground Pest damage to underground pests mainly wheat