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核桃是我国重要的干果之一,但由于病害发生严重,其生产受到影响。为此,许多学者对病害问题进行了研究。作者在1982年对核桃病害的种类进行了调查,调查中发现了一种不同于以往报道过的枝干病害新症状。现将对其进行的初步调查和研究结果报导如下。
Walnut is one of the important dried fruits in our country, but its production is affected due to serious disease. To this end, many scholars have studied the disease problem. The author investigated the species of walnut disease in 1982 and found a new symptom different from the previously reported branch disease. Now the preliminary investigation and research results are reported as follows.