国光苹果的矮化中间砧树(中间砧为M7,基砧为山定子)与乔砧树(砧木为山定子),通过9年栽培比较试验表明,其矮化中间砧树比乔砧树的亩枝量增加31.1%,每亩中、短枝枝量增多72.4%。矮化中间砧树比乔砧树提早2年结果,9年累计亩产增加78.2%,单果重增大3.4%,着色指数提高20.6%,果实可溶性固形物含量、总酸量、硬度两者无明显差别。 Guoguang apple dwarfing middle rootstock (middle anvil M7, base anvil as mountain statues) and Joe rootstock (rootstocks as mountain statues), compared with nine years of cultivation experiments showed that the dwarfing intermediate anvil trees than Joe anvil The amount of mu branches increased by 31.1%, and the number of short branches increased by 72.4% per acre. Dwarfing middle anvil tree 2-year earlier than Joe anvil tree results, 9-year cumulative increase of 78.2% per mu, fruit weight increased 3.4%, coloring index increased 20.6%, fruit soluble solids content, total acidity, hardness of both Obvious difference.