我团果农于1992－1993年间，对一块面积为169亩的4年生在立苹果园中混杂的海棠、红宝、新光等小果品种进行高接，换成果型较大的“新苹1号”和“新冠”两品种。1994年3月上旬石河子出现了历史罕见的“倒春寒”，－24℃的低温持续近一周，此时树体已开始解除休眠，抗寒力下降。 During the period from 1992 to 1993, my group of peasants held a high pick of small fruit varieties such as Begonia, Rhodiola, and Shin Kong, which are four-year-old peasants living in orchards with an area of ​​169 mu. “And” new crown “two varieties. Early in March 1994 Shihezi history rare ”late spring cold", -24 ℃ low temperature lasted nearly a week, when the tree has begun to lift dormancy, cold resistance decreased.