| 花生根系在土壤中垂直分布特性的研究 |
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| 引用本文： | 王启柏,张高英,万勇善,李向东. 花生根系在土壤中垂直分布特性的研究[J]. 中国油料作物学报, 1995, 0(4) |
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| 作者姓名： | 王启柏 张高英 万勇善 李向东 |
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| 作者单位： | 山东农业大学农学系 |
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| 摘 要： | 花生根系干重在不同深度土层中的垂直分布里指数递减模式。根系干重有６２．６％－８５．５％分布在０—２０ｃｍ耕作层土壤中，１４．７％－２５．２％分布在２０—５０ｃｍ土层中。根系ＴＴＣ还原量、３２Ｐ吸收量随土层深度增加而逐渐降低．根系ＴＴＣ还原量有５０％－６０％分布在０—２０ｃｍ耕作层，３２Ｐ吸收量有４０％－５０％分布在０—２０ｃｍ耕作层。花生根系的吸收能力在深层土壤中占有较高的比例。
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| 关 键 词： | 花生，根干重，根吸收，根分布 |
STUDIES ON DISTRIBUTION CHARACTERISTICS OF ROOT SYSTEM IN PEANUT ALONG SOIL PROFILE |
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| Wang Qibai, Zhang Gaoying,Wan Yongshan, Li Xiangdong. STUDIES ON DISTRIBUTION CHARACTERISTICS OF ROOT SYSTEM IN PEANUT ALONG SOIL PROFILE[J]. Chinese Journal of Oil Crop Sciences, 1995, 0(4) |
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| Authors: | Wang Qibai Zhang Gaoying Wan Yongshan Li Xiangdong |
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| Abstract: | The studies showed that the distribution of root dry weight decreased exponentially along soil profile, 62.5%-85.2% of the root dry weight was distributing in the top of 0-20cm soil layer, 14.7%-25.2% in the 20-50cm soil layer. TTC reductionamount and 32P absorption amount decreased as the depth of soil layer increased. 50%-60% of TTC reduction amount and 40%-50% of 32P absorption amount were in the top of 0-20cm soil layer. Absorption capacity of root system in peanut in deep soil layer had great proportion. |
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| Keywords: | Peanut Root dry weight Root absorption Root distribution |
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