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据《中国果树》介绍,尽快增加前期枝量,是获得山楂早期丰产的基础.山东省栖霞县林业局张友功、齐志琴于1980—1981年在济南、沂南、栖霞等地山楂幼树上试验用无色塑料薄膜套袋和地面覆盖,看出了良好效果.1984—1985年又在栖霞县新栽植的2.1万亩山楂密植园推广应用.1、定植苗套袋.用0.015毫米厚塑料薄膜预先作好略长于树苗的塑料袋,将新栽苗套上后上部扎紧,
According to the introduction of “Chinese Fruit Tree”, increasing the amount of early branches as soon as possible is the basis for obtaining the early hawthorn’s high yield. Zhangyou Gong and Qi Zhiqin from Qixia County Forestry Bureau of Shandong Province experimented on young hawthorn in Jinan, Yinan and Qixia from 1980 to 1981 Colorless plastic film bagging and ground cover, and saw good results. 1984-1985 in Qixia new planting of 21000 acres of hawthorn plantation popularization and application .1, planting seedlings bagging with 0.015 mm thick plastic film in advance Slightly longer than the plastic bag made of saplings, put the new planting and tying the upper part,