大荔县核桃炭疽病危害调查及分析

2020-2021年，对陕西省大荔县核桃主产区炭疽病危害进行了调查和分析。结果表明：大荔县核桃主产区炭疽病危害比较严重，已经成为限制当地核桃产业发展的关键因素。在大荔县核桃主产区炭疽病的发生和危害与产区所处地理位置和气候有很大关系，赵渡镇与黄河、渭河、洛河相邻，地势低下，环境湿度大、降雨多，危害最为严重；段家镇地处渭北黄土高原南缘，干旱少雨、干热风十分严重，危害相对较轻。同时，根据核桃炭疽病在大荔县的发病规律提出了防治建议。

Survey and Analysis of Walnut Damages Caused by Gloeosporium fructigenum in Dali County

In walnut planting area of Dali county, damages caused by the disease of Gloeosporium fructigenum during 2020 to 2021 was investigated. The result showed that the disease of Gloeosporium fructigenum was severe,which restricted the walnut industry in Dali. The outbreak of Gloeosporium fructigenum was highly associated with the location of walnut planting area and climatic conditions. Zhaodu town is near to the Yellow river, the Weihe river and the Luohe river, and is also located in lower terrain with high moisture and plenty rainfall, so it was seriously affected by the disease, whereas Duanjia town is located in the south margin of the Loess plateau, the rainfall is less, dry and hot wind is serious, so it was less affected by the disease. Accordingly, some suggestions for improvement were put forward.