苹果生产中,许多果园头一年产量很高,而第二年产量却很低,同一株树,第一年结果很多,次年却结果很少,这种结果一年多一年少的现象叫做大小年结果,特别是国光苹果树尤为明显,长期地大小年结果会造成树势衰弱、果实质量差、腐烂病重、树冠残缺不全,甚至出现死树现象。 In the apple production, many orchards produce very high yields in the first year and the output in the second year is very low. The same tree has many results in the first year and few results in the following year. The result of this year and a year is called The size of the year results, especially Guoguang apple tree is particularly evident, the long-term annual results will result in bouts of weakness, poor quality of fruit, rotten disease, incomplete crown, or even dead tree phenomenon.