晚夏喷2氯乙基膦酸(乙烯利)增加了甜樱桃休眠花芽的抗寒性,延迟了花期和提高了春霜冻后的成活率,因而可增加产量。枝条的抗寒性略有增强。有时促使秋季落叶。虽然果实个头减小,但对色泽、可溶性固形物和硬度无影响。六年中有一年晚夏喷乙烯利,第二年五月枝条发生流胶病。乙烯利可能不会改变正常的气候适应性。它的作用是迭加于自然周期之上的。 Late summer spraying 2 chloroethyl phosphonic acid (ethephon) increased the cold resistance of sweet cherry dormant flower buds, delayed the flowering period and increased the survival rate after spring frost, thus increasing the yield. The cold resistance of branches slightly enhanced. Sometimes promote autumn leaves. Although the fruit reduced head, but no effect on color, soluble solids and hardness. In the past six years, ethephon was sprayed in the summer of one year and meliorating in the following year in May. Ethephon may not change the normal climate adaptability. Its role is superimposed on the natural cycle.