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1980—85年,我们在济南、沂南、栖霞等地对山楂幼树进行了薄膜套袋和地面复盖的试验,试验证明这是一项使幼树迅速增枝、提早结果的有效措施。一、定植苗套袋。栖霞县1984—85年兴建的二万多亩山楂密植园,大都进行定植苗套袋越冬或套袋度春。据在寺口镇调查,越冬前套袋植株,比对照提早发芽8天,枝量增加6.1个,枝条总长度增加121.4厘米;春节后套袋植株,比对照提早发芽5天,枝量
In 1980-85, we tested the thin film bagging and the ground covering of hawthorn saplings in Jinan, Yinan, Qixia and other places. The experiment proves that this is an effective measure to rapidly increase young trees and increase early results. First, planting seedlings bagging. Qixia County 1984 - 85 years to build more than 20,000 acres of Hawthorn dense plantation, mostly for planting seedlings overwintering or bagging spring. According to the survey in Si Kou Town, bagged plants before winter were germinated for 8 days earlier than the control, with 6.1 branches increased and the total length of branches increased by 121.4 cm. Bagging plants were sowed 5 days earlier than the control after the Spring Festival,