CAJ | 학술논문

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。
대15년래해남농은주산구상효수협편개미양분함량년제변화진행분석．발현재소채집적협편양본중미소양분함량정체편저，약유45％적양본저우정상지표치하한；개소양분함량대부분고우정상지표상한，단잉유부분양본저우정상지표치。종근5년적변화추세래간，개미양분정현축년강저，저가능여상효수전용비중선용적린비원료품충유관。
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.