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山东省果树研究所试验场四分场,1987年冬定植6.8亩新国光(短枝国光),共计718株,株行距为2×3m。在常规管理条件下,树体生长健壮,年新梢生长量85cm以上,干周年增长2～2.5cm,1989年已有30%以上的树株开花结果,1990年总产2 948kg,但只选出 667kg好果,其他均为不同程度的裂果,裂果
Shandong Province Institute of fruit trees quarter field, the winter 1987 planting 6.8 acres of new country light (short branches Guoguang), a total of 718 strains, spacing of 2 × 3m. Under normal management conditions, the tree grows robustly. The annual shoot growth is more than 85cm and the dry annual increase is 2 ~ 2.5cm. In 1989, more than 30% of the trees were blooming. In 1990, the total output was 2948kg, but only A good 667kg fruit, the other are varying degrees of cracked fruit, cracked fruit