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我省苹果生产发展速度较快,1949年解放时只有3万余株,到1978年底已发展到2,424万株。但产量不高,1973年苹果结果树平均株产量仅9.4斤,1978年为22.5斤。产量不高的主要原因是适龄果树不结果。据1973年调查,全省不结果的适龄幼树达400万株,约占总株数的1/3。1973-1977年,我们就苹果幼树不结果的问题进行了调查研究,初步摸清了我省不同地区苹果幼树生长发育的规律及适龄结果的技术措施。
Apple production in our province grew rapidly, with only 30,000 strains in 1949 and 24.24 million strains grown by the end of 1978. However, the yield was not high. In 1973, the average yield of apple tree was only 9.4 kg and in 1978 it was 22.5 kg. The main reason for the low yield is that fruit trees of the right age do not produce any results. According to the survey in 1973, there were 4 million young age-affected young trees in the province accounting for about 1/3 of the total number of trees in the province. From 1973 to 1977, we conducted a survey on the problem of fruitless apple trees and found out tentatively Laws of Growth and Development of Young Apple Trees in Different Areas of Our Province and Technical Measures for Age - appropriate Results.