圆柱形梨园幼树期树相指标研究

Indexes of Tree Structure of Cylindrical Shape Pruning Mode in Innutrition Periods

为探讨圆柱形梨园合理的树体和群体结构参数,作者调查了不同品种圆柱形梨园幼树期树体和群体结构参数。结果表明,3年生‘新梨7号’树高348.3 cm,干高63 cm,单株留枝量63条,每666.7 m2枝量19 971条,叶面积系数1.62。3年生‘雪青’树高为303.0 cm,干高74 cm,单株留枝量57条,每666.7 m2枝量18 069条,叶面积系数1.73。2个品种圆柱形树形均表现为冠层结构紧密,枝条分布均匀,中枝和短枝数量大于全株总枝量的60%。

In order to study the cylindrical s hape pruning mode pear tree structure parameters and technical management,cylindrical shape pruning mode in innutrition periods different cultivars were investigated. The results showed that the 3-year-old cylindrical shape pruning mode ‘Xinliqihao＇ pear tree has a height of 3.48 meters,a stem height of 63 cm,and 63 branches per plant,which is equivalent to 19 971 pieces of per acre,and the coefficient of leaf area is 1.62. The 3-year-old cylindrical shape pruning mode ‘Xinliqihao＇ pear tree height was 3.03 meters,stem height was 74 cm,and the number of branches per plant was 57,which was equivalent to 18 069 pieces of per mu. The leaf area coefficient was 1.73. The cylindrical trees of the two varieties were all characterized by tight canopy structure and branch distribution. Uniform,the number of branches and short branches is greater than 60% of the total branch of the whole plant.