| 枣叶片营养元素含量年周期变化的研究 |
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| 引用本文： | 曲泽洲,王永蕙.枣叶片营养元素含量年周期变化的研究[J].河北农业大学学报,1990,13(3):1-6. |
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| 作者姓名： | 曲泽洲 王永蕙 |
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| 作者单位： | 河北农业大学中国枣研究中心
(曲泽洲，王永蕙)，河北农业大学中国枣研究中心(毛永民) |
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| 摘 要： | 本文对四个枣品种叶片中八种矿质营养元素(N、P、K、Ca、Mg、Fe、Mn和Cu)含量的年周期变化进行了研究。结果表明,叶片矿质营养元素含量及其在生长季的波动情况因品种、年份不同而异。随着物候期的进展,叶片N、P、K含量呈下降趋势,Ca、Mn、Fe则呈上升趋势,Mg在不同年份差异较大,Cu在生长季前期下降,后期呈上升趋势。叶分析的采样适期为7月初到8月中。
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| 关 键 词： | 枣 叶片 矿质营养元素 年周期变化 |
A Study on the Seasonal Changes of Mineral Nutrient Contents in the Leaves of Chinese Jujube (Zizyphus jujuba Mill.) |
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| Qu Zezhou Wang Yonghui Mao Yongmin.A Study on the Seasonal Changes of Mineral Nutrient Contents in the Leaves of Chinese Jujube (Zizyphus jujuba Mill.)[J].Journal of Agricultural University of Hebei,1990,13(3):1-6. |
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| Authors: | Qu Zezhou Wang Yonghui Mao Yongmin |
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| Abstract: | Studies were made on seasonal changes of N, P, K, Ca, Mg, Fe, Mn, and Cu in the leaves of four cultivars of chinese jujube (Zizyphus jujuba Mill.), Hui Zao, Tai Gu Hei Ye Zao, Po Zao, and Ban Zao. The results indicated that the nutrient concentrations in the leaves and seasonal fluctuations varied with different cultivars and years. The general seasonal trend of N, P, K in the leaves tended to decrease and that of Ca, Mn, and Fe tended to increase as the phenological phases progressed, but that of Mg differed greatly between years. The percentage of Cu in the leaves was higher in the early growing season, tending to decrease until the middle of growing season, and increase in the latter season. The opportune sampling time for leaf analysis was between early July and mid-August when all 8 nutrient elements were considered. |
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| Keywords: | jujube Leaf analysis Mineral nutrients |
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