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山西汾阳县是全国核桃重点产区之一。所产核桃个大、皮薄、肉厚、入口香脆,出仁、出油率高,在国内外市场上享有很高声誉。但生产上存在总产不稳,单产不高的问题。过去人们把核桃减产归因于“低温”影响。据我们多年调查和观察,不完全是受冻造成,凡是核桃雄花芽受冻、雄花序稀少的年份,核桃产量反而大幅度上升。如1980年5月中旬,两次气温骤降,绝大部分雄花芽受冻,未等
Fenyang County, Shanxi Province is one of the key producing areas of walnuts. Walnut produced a large, thin, fleshy, crisp entrance, a kernel, a high rate of oil in the domestic and foreign markets enjoy a high reputation. However, there is a problem of total output instability and low yield per unit in production. In the past people attributed the “low temperature” impact of the decrease in walnut production. According to our many years of investigation and observation, not entirely caused by the cold, walnut male flowers buds frozen, sparsely seasoned male, walnut yield but significantly increased. As of mid-May 1980, the temperatures dropped twice and most of the male flower buds were frozen, not waiting