定西市马铃薯田甘肃鼢鼠发生规律初探

Preliminary study on the occurrence of Gansu zokor in potato fields in Dingxi

2019—2021年,在甘肃定西市黄土高原半干旱区调查了阳坡、阴坡、山顶及川地马铃薯田甘肃鼢鼠发生为害情况及取食洞特征。结果表明,马铃薯田甘肃鼢鼠为害率逐年加重;从不同地形发生程度看,阳坡地发生为害明显重于其他地形,川地为害率最低;从甘肃鼢鼠洞道大小看,川地鼠洞小于其他地形,但差异不明显。

Gansu zokor is the dominant rodent species in Dingxi of Gansu,a representative of the semi-arid area of the Loess Plateau.It is important to understand the occurrence of Gansu zokor to explore scientific and effective control methods.From 2019 to 2021,we investigated the occurrence,damage,and feeding hole characteristics of Gansu zokor in potato fields on the sunny slope,shady slope,hilltop,and valley floor in Dingxi.The results showed that the damage rate of Gansu zokor increased year by year,and the damage was significantly heavier in the sunny slope field than that in other types of fields,and the damage rate in the valley area was the lowest.According to the tunnel size of Gansu zokor,the tunnel size in the valley area is obviously smaller than that in other areas.