钟祥市紫薇1年生扦插苗质量分级标准研究

Study on Quality Classification Standard for Lagerstroemia indica L. 1-year old Cutting Seedling in Zhongxiang City

摘要:

摘要：笔者对钟祥市1 a生紫薇扦插苗进行随机抽样调查，在调查苗木地径、株高等生长性状基础上，采用平均值±标准差方法和逐步聚类法进行苗木等级检验，最终确定紫薇1 a生扦插苗分级标准为：I级苗地径≥0.90 cm，苗高≥120.0 cm；Ⅱ级苗地径0.50～0.90 cm，苗高80.0～120.0 cm。

Abstract:

The Cutting seedlings of Lagerstroemia indica L. which are cultivated 1-year old in Zhongxiang City in Hubei. are investigated by random sampling. The growth character of basal diameter rand height are investigated, used the ±S method and the gradual clustering method for testing the seedling grade, Based on productive practice，the authors concluded the classification of 1-year old Lagerstroemia indica L. cutting seedlings grading standard, the ground diameter and height of the I grade seedling are bigger than 0.90 cm and 120.0 cm respectively, and those of the II grade seedlings are 0.50 ～0.90 cm and 80.0 ～120.0 cm respectively.