荷兰引种核桃品种嫁接苗在云南漾濞的生物学特性表现

The Biological Characteristics of Introduced Walnut Grafting Seedling in Yangbi of Yunnan Province

在云南省漾濞县，以Buccaneer、 Coenen、 Hansen等10个引种核桃品种和1个本地核桃品种为研究对象，开展各品种嫁接苗的物候期观测和1年生嫁接苗苗高和地径的定期测定。结果表明，10个引种品种在漾濞的萌芽期为3月13-22日，展叶期为4月1-8日，速生期为5月7日-6月22日，落叶期为11月6-21日，与对照品种漾濞大泡核桃相比，萌芽期、展叶期、速生期、落叶期都晚15-20天。1年生嫁接苗苗高和地径的生长周期变化各不相同，高生长出现的峰值不一致，而且都有2次生长，地径的生长周期变化基本相同，在生长期间出现的峰值也基本一致。

Phenological observation was carried out for the 10 introduction walnut grafting seedling varieties and 1 local walnut variety in Yangbi county of Yunnan Province based on the determination of 1-year grafting seedling height and ground diameter .The result shows that germination period of the 10 introduced varieties in Yangbi was from March 13 to March 22 , leaf extension period was from April 1-April 8 , fast-growing period from May 7 to June 22, deciduous period from November 6th to November 21st.Compared with the contrast varieties , the gern-eration , leaf extension , fast-growing and deciduous period were 15-20 days later than that of the local ones .The growth cycles of 1-year grafting seedling height and ground diameter were different from each other .The peaks of high growth were also different , and there were 2 times of growth .There was little change in the growth cycles of ground diameter and the peak during the growth period was almost the same .