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冰雹是农业生产上的一大灾害。1974年7月3日,我省蒲城、大荔一带降了一次几十年来罕见的冰雹,历时4～10分钟,最长的15分钟,小的如杏核,大的如核桃,最大的直径12.5厘米,给秋田造成程度不同的损失。过去这方面的研究不多,可供参考资料也少。为此,我们在当地党委领导下,结合棉花补救作了试验调查,文内所谈大荔县情况属水地棉花,蒲城则以旱地棉花为主。受灾程度和生育恢复状况大荔县站将受灾区分为严重的、较重的、中等的、较轻的四类。严重的打成光秆,西北面韧皮部打掉50-75％,较重的棉头全部损失,蕾、花、铃、叶完全打落,单株残留断果枝2.5个,西北面韧皮部25％打离主秆;受灾中等的棉头打折98％,单株残留断果枝
Hail is a major disaster in agricultural production. July 3, 1974, the province of Pucheng, Dali area down a few decades of rare hail, which lasted 4 to 10 minutes, the longest 15 minutes, small, such as almonds, large, such as walnuts, the largest 12.5 cm in diameter, causing a different degree of loss to Akita. In the past, there was not much research in this area and few references were available. To this end, under the leadership of the local party committees, we conducted a pilot survey in connection with the cotton remedy. In the article, the situation in Dali County is in the form of watery cotton while in Pucheng, dryland cotton is the mainstay. Degree of disaster and reproductive status Dali County station will be divided into severe, heavier, moderate, lighter four categories. Seriously labeled as light stalk, northwest phloem Department destroyed 50-75%, heavier loss of cotton head, buds, flowers, bells, leaves completely knocked down, leaving 2.5 fruiting branches per plant, 25% of the phloem in the northwest From the main stalk; affected medium cotton discounts 98%, leaving a single residual fruiting branches