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果树育苗一般是“一种二接三出圃”,即第一年播种长砧木,第二年移栽再嫁接,第三年成苗出圃。这样做时间长,速度慢,费工多、出苗少。当年,我们把苹果种子实行带状播种,合理密植,经过两年就可出圃。当年播种砧木2.6亩,定苗47,000株,嫁接45,000株,1975年春季芽接2,000株,秋季出圃苹果成苗45,500株,平均每亩成苗17,500株。苗高平均1.6米,最高的2.25米,最低的1.2米,距地面1尺处的径粗1.1厘米,比移植嫁接苗稍细一些。达到出圃标准,实现了两年出圃。我们的作法是:
Nursery fruit trees are generally “a second pick three nurseries,” that is, the first year of planting long rootstocks, replanting the second year of grafting, the third year into nursery. This is a long time, slow, more labor, less emergence. In the same year, we carried out sowing of apple seeds in strips, reasonably close planting, and after two years we went out of cultivation. In the same year, 2.6 mu of rootstocks, 47,000 Dingmiao plants, 45,000 grafted plants and 2,000 buds in the spring of 1975 were planted. In the fall, 45,500 were planted as apples and 17,500 were planted per acre. The average seedling height is 1.6 meters, the highest is 2.25 meters, the lowest is 1.2 meters, and the diameter at the foot of 1 foot is 1.1 cm, which is slightly smaller than that of grafted seedlings. Achieved nursery standards, to achieve a two-year nursery. Our approach is: