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首页> 外文期刊>Acta Horticulturae >Behavior of leaf nutritional status in 'on' and 'off year bearing trees of 'Bengal' f itchi (Litchichinensis)
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Behavior of leaf nutritional status in 'on' and 'off year bearing trees of 'Bengal' f itchi (Litchichinensis)

机译：“孟加拉”（Litchichinensis）'on'和'轴上树木的叶营养状况的行为

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The major problems reported in litchi in several countries include irregular flowering, poor fruit retention, small fruit size and alternate bearing. This study assessed the time course (all-year-round, on a monthly basis) of the leaf macro- and micronutrient concentrations, in 'on' and 'off' year bearing 'Bengal' litchi trees. In December 2012, fifty uniform trees, half of them with a heavy fruit load ('on' year) and the other half with a very light crop load ('off' year) were tagged to trace theirnutritional status. The trees were twelve years old, with an approximately 5 m canopy diameter and 4 m in height, and have received the same cultural practices and fertilization since the orchard establishment. Leaves were sampled monthly from December 2012 to November 2013 and analyzed for nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), iron (Fe), manganese (Mil), copper (Cu), zinc (Zn) and boron (B). Data were submitted to analysis of variance and means comparedby multiple range test at 5% probability. Leaf analysis showed differences between 'on' and 'off' year bearing trees for N, K, Mn and Cu. Leaf macronutrients were higher in the 4th month and lower around the 10th month, whereas leaf micronutrients were higher around thelOth month and lower in the 4th month. These results open the possibility to use leaf analysis as a tool to predict potential yield and manage fertilization accordingly to minimize alternate bearing in litchi.
机译：荔枝中报告的主要问题包括不规则的开花，果实保留，小果实尺寸和交替轴承。本研究评估了叶片宏观和微量营养素的时间课程（全年，每月），“on”和“孟加拉”荔枝树木。 2012年12月，五十件均匀的树木，其中一半具有沉重的水果载荷（'年'），另一半带有非常轻微的作物负荷（'Off'年）被标记为追踪他们的营养状态。树木十二岁，顶部5米的树冠直径，高度为4米，自果园建立以来收到了相同的文化措施和施肥。叶每月从2012年12月到2013年11月进行了采样，并分析氮气（N），磷（P），钾（K），钙（CA），镁（Mg），硫（S），铁（Fe），锰（米尔），铜（Cu），锌（Zn）和硼（B）。数据分析到方差分析，并且在5％概率下比较多个范围测试。叶片分析显示了N，K，Mn和Cu的“ON”和'OFF'轴承树之间的差异。叶Macronurients在第4个月内较高，第10个月左右，而叶片微量营养素距离θ较高，在第4个月内较低。这些结果打开了使用叶片分析作为一种工具，以预测潜在的产量和施肥，以便最小化荔枝中的交替轴承。

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