膜下昆虫对滴灌带啃咬的研究

[目的]寻找防止膜下昆虫啃咬滴灌带的方法。[方法]进行对比试验，分别选试验地为草地、试验箱、砼地，膜下昆虫选蝗虫、蟋蟀、地老虎3种，在试验地分别铺设9根滴灌带，膜下放置昆虫，每隔3d抽出部分滴灌带进行漏水检测，同时对剩余滴灌带进行通水，7月试验1次，8月重复上述试验1次。[结果]统计结果表明，昆虫在地膜覆盖条件下为获取水分而啃咬滴灌带，其大规模啃咬通常在滴灌带第2次通水之后发生，其啃咬的部位在滴灌带滴水元件附近的迷宫处，且随着通水次数的增加，滴灌带的非正常漏水点增加。[结论]膜下昆虫啃咬滴灌带是有时间段的，而且有明显的特征部位，建议对滴灌带生产原料进行改进，以防止昆虫啃咬。

Research on the Situation in the Field of the Pests under Film Bite Drip Irrigation Belt

[ Objective ] To find the method for controlling pests bite drip irrigation belt. [ Method ] Selecting grassland, test box, concrete, locusts, crickets, tiger three pests, 9 drip irrigation belt was laid, water leakage detection was conducted every 3 d. The experiment was car- ried out in July, and was repeated in August. [ Result ] The statistics result showed that, under the film coverage condition, pests bite drip irrigation belt for obtaining water. The large scale bite always appears in the second water. With water transmission times increasing, abnormal water leakage point increased. [ Conclusion] Pests bite drip irrigation belt has time period and obvious characteristics part. The production material of drip irrigation belt was suggested to improve, so as to prevent pest bite.