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经6年的观察,结果证明,我省栽培的苹果,在正常气温年份中,花芽冻害主要发生在3月中下旬。 同一品种,长枝腋花芽的抗寒力比长枝顶花芽强。同一芽中,边花的抗寒力比中花强。一花中,花柄的抗寒力较差,花柄受冻害后即可引起小花死亡。
After 6 years of observation, the results show that the apple cultivated in our province, the normal temperature in the year, flower bud frost damage occurs mainly in late March. The same species, long branches axillary buds of the cold-resistant than the long branches of the buds. The same bud, the edge of the cold hardiness than Zhonghua strong. A flower, the cold hardiness of the handle is poor, flower stalks can cause the death of the flower after being frostbite.