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泡桐是我省优势树种,每年育苗面积三十余万亩,占全省育苗一半以上,由于其技条生长属于假二杈分枝,干形低矮,全省多数一年生苗高2米左右,大部需要平茬,二年才能出圃.不仅降低了泡桐的经济价值,而且延长了苗木生产时间.近年来,广大林业工作者深入研究,探讨如何培育高干壮苗,已取得了可喜的成绩,例如,临颍县固厢公社小师大队二亩予选一号泡桐,当年平均高5.14米,地径7.49厘米.午阳县吴城公社三队一年生兰考泡桐平均苗高4.9米,地径7厘米.为总结泡桐高干壮苗育苗技术,给泡桐苗木规格化,标准化提供依据,1979年以来,我们在分析我省埋根育苗的基础上,运用数理统计,对临颍、许昌县和许昌市郊
Paulownia is the dominant tree species in our province, more than 300,000 mu of nursery area each year, accounting for more than half of the province’s seedlings, because of its technical growth is false two branches, dry low, most of the province annual 2 meters high, Most need to stubble, two years to nursery not only reduce the economic value of Paulownia, but also extend the seedling production time.In recent years, the majority of foresters in-depth study to explore how to cultivate tall and strong seedlings, has made gratifying achievements , For example, Linying County, the small unit of the two teams Xiang Kexiang elected Paulownia, the year average height of 5.14 meters, a diameter of 7.49 centimeters. Wuyang commune in Wuyang commune three annual blue shoot Paulownia average 4.9 meters high ground, Diameter 7 cm .To sum up the Paulownia tall stem strong seedling technology, give Paulownia seedling standardization, standardization to provide basis, since 1979, we analyzed the root of our province nursery stock based on the use of mathematical statistics, Linying, Xuchang County And Xuchang suburbs