Indexes of Tree Structure of Cylindrical Pear Orchards at the Sapling Stage
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摘要
The reasonable tree and population structure parameters of various cylindrical pear orchards were studied. The results showed that for 3-year-old ‘Xinli No. 7', the tree height was 3.48 m, and the trunk height was 63 cm; there were 63 branches per plant, which was equivalent to 19971 branches per 667 m~2; the leaf area index was 1.62. For the 3-year-old ‘Xueqing', the tree height was 3.03 m, and the trunk height was 74 cm; the number of branches per plant was 57, which was equivalent to 18 069 branches per 667 m~2; the leaf area index was 1.73. The cylindrical trees of the two varieties had the following characteristics: the canopy structure was tight; the branches were equally distributed, and the number of medium branches and short branches accounted for more than 60% of the total number of branches of the whole plant.
The reasonable tree and population structure parameters of various cylindrical pear orchards were studied. The results showed that for 3-year-old ‘Xinli No. 7', the tree height was 3.48 m, and the trunk height was 63 cm; there were 63 branches per plant, which was equivalent to 19971 branches per 667 m~2; the leaf area index was 1.62. For the 3-year-old ‘Xueqing', the tree height was 3.03 m, and the trunk height was 74 cm; the number of branches per plant was 57, which was equivalent to 18 069 branches per 667 m~2; the leaf area index was 1.73. The cylindrical trees of the two varieties had the following characteristics: the canopy structure was tight; the branches were equally distributed, and the number of medium branches and short branches accounted for more than 60% of the total number of branches of the whole plant.
The reasonable tree and population structure parameters of various cylindrical pear orchards were studied. The results showed that for 3-year-old ‘Xinli No. 7', the tree height was 3.48 m, and the trunk height was 63 cm; there were 63 branches per plant, which was equivalent to 19971 branches per 667 m~2; the leaf area index was 1.62. For the 3-year-old ‘Xueqing', the tree height was 3.03 m, and the trunk height was 74 cm; the number of branches per plant was 57, which was equivalent to 18 069 branches per 667 m~2; the leaf area index was 1.73. The cylindrical trees of the two varieties had the following characteristics: the canopy structure was tight; the branches were equally distributed, and the number of medium branches and short branches accounted for more than 60% of the total number of branches of the whole plant.
引文
[1] ZHANG SL,ZHOU YH.Development trend and suggestion of pear industry in 2012[J].China Fruit News.2012,29(2):25-27.(in Chinese).
[2] YANG FX,QIAO JC,ZHANG YX,et al.Study on the tree-structure indexes and light characteristics of full bearing trees with a pillar system in a high-density pear orchard[J].Journal of Agricultural University of Hebei,2013,36(3):39-44.(in Chinese).
[2] YANG FX,QIAO JC,ZHANG YX,et al.Study on the tree-structure indexes and light characteristics of full bearing trees with a pillar system in a high-density pear orchard[J].Journal of Agricultural University of Hebei,2013,36(3):39-44.(in Chinese).