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海南农垦橡胶树叶片钙镁含量年际变化分析 被引量:8

Annual Variation of Calcium and Magnesium Content in Rubber Tree Leaves at State Farms in Hainan
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摘要 对15年来海南农垦主产区橡胶树叶片钙镁养分含量年际变化进行分析,发现在所采集的叶片样本中镁素养分含量整体偏低,约有45%的样本低于正常指标值下限;钙素养分含量大部分高于正常指标上限,但仍有部分样本低于正常指标值。从近5年的变化趋势来看,钙镁养分呈现逐年降低,这可能与橡胶树专用肥中选用的磷肥原料品种有关。 Analyzing the annual variation of calcium and magnesium content of rubber tree leaves in the main rubber producing areas of Hainan state farm from 1997 to 2011. We founded that the magnesium content of the sampling rubber tree leaves is low, which 43 percent of the samples is below to the minimum of normal magnesium diagnostic index; In most of the sampling rubber tree leaves, the calcium content is beyond the maximum of the normal calcium diagnostic index, but also there is some samples is below the minimum of normal calcium diagnostic index because of the high variation coefficient. The calcium and magnesium content of rubber tree leaves is gradually to decrease in nearly five years, which is maybe having something to the phosphate fertilizer type added to the special fertilizer of rubber tree.
出处 《热带农业科学》 2012年第5期4-8,共5页 Chinese Journal of Tropical Agriculture
基金 现代农业产业技术体系建设专项资金项目(No.CARS-34) 中央级公益性科研院所基本科研业务费专项资金 中国热带农业科学院院本级资助项目(No.1630012011004)
关键词 海南农垦 橡胶树叶片 钙镁养分 年际变化 Hainan state farm calcium and magnesium annual variation rubber leaf
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