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１９８５年１月～１９８８年春，先后从山东泰安、临沂等地引种山楂嫁接苗木１３万株，现生长结果良好，引种成功，实践证明山楂“北果南引”是可行的。
From January 1985 to the spring of 1988, 130,000 hawthorn grafted seedlings were introduced from Tai’an, Linyi and other places in Shandong Province. Now the growth result is good and the introduction is successful. It has been proved through practice that hawthorn North Guinan cited is feasible.