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在全民大跃进的形势下,果树栽培事业的发展空前迅速。为了加速果苗的繁殖,1959年全国各地很多单位提出了一年出圃快速育苗的研究任务。吉林省公主岭地处寒带。全年无霜期极短只130日左右;各季绝对低温达-32℃,年平均温度4℃左右。春季温度变化激烈,日温差可达20℃左右,1959年4月20日还降雪,春风大,5月23日还有9级风的侵袭。在这种不良的气候条件下,如何获得当年播种,当年嫁接、当年出圃的苹果苗木,是一项光荣而艰巨的任务。
Under the situation of great leap forward for the entire nation, the development of fruit tree cultivation is unprecedentedly rapid. In order to speed up the seedling breeding, many units throughout the country in 1959 put forward the research task of cultivating seedlings quickly in one year. Gongzhuling in Jilin Province is located in the cold zone. Frost-free period throughout the year only a short period of only 130 days; the absolute minimum temperature of each season -32 ℃, the annual average temperature of about 4 ℃. In spring, the temperature changes fiercely, and the daily temperature difference can reach about 20 ℃. On April 20, 1959, the snowfall also occurred. The spring breeze was big and there was still 9 winds on May 23. Under such bad weather conditions, it is a glorious and arduous task to obtain the apple seedlings that were sown in that year, and then grafted in that year.