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天镇县现有苹果树4,850亩,6.4万株。其中结果树4万株,1980年平均株产仅9.5斤。低产原因和解决办法是:一、品种选择不当我县现已引入的苹果品种有红星、元帅、金冠、大国光、小国光、红玉、伏红等32个,大多数不能适应当地的气候条件。例如红玉每年顶花芽冻害率在90%以上。南河堡大队果园的伏红,赵家沟大队果园的红元帅,每年受冻率都在70%以上。属于这种情况的果园,全县约占40%。实践证明,适宜我县栽培的耐寒苹果品种有金红、伏锦、倭锦、黄魁;红星、大国光、小国光,旭光、青香蕉次之;最不耐寒的是红玉、伏红、祝光等品种。对不耐寒品种要高接换头,嫁接品种应是金冠、倭锦、伏锦、黄魁等。
Tianzhen County, the existing 4,850 acres of apple trees, 64,000. The result of which 40,000 trees, 1980, average yield of only 9.5 pounds. Low yield causes and solutions are: First, the improper selection of varieties The county has now introduced the apple varieties are Red Star, Marshal, Golden Delicious, Big Light, small country light, red jade, red, etc. 32, most can not adapt to the local climatic conditions . For example, the annual rate of frostbite buds is over 90%. Nanhe Fort Brigade orchard red, Zhaojiagou brigade orchard Red Marshal, the annual freeze rate of more than 70%. This belongs to the orchard, the county accounts for about 40%. Practice has proved that suitable for cultivation of cold-resistant varieties of our county are red, Fujin, Japanese Kam, Huang Kui; Red Star, Big Light, small country light, Xuguang, Green Banana second; the most hard-cold are ruby, Wishful variety. Not cold-resistant species to high take the lead, the grafted varieties should be the Golden Delicious, Japanese Kam, Fu Jin, Huang Kui and so on.