| 油菜幼苗对硼的吸收与运转及钙的影响 |
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| 引用本文： | 沈振国,沈康.油菜幼苗对硼的吸收与运转及钙的影响[J].植物学通报,1992,9(4):33-37. |
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| 作者姓名： | 沈振国 沈康 |
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| 作者单位： | 南京农业大学农学系 江苏南京210014
(沈振国，沈康)，南京农业大学农学系 江苏南京210014(张秀省) |
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| 摘 要： | 硼促进油菜幼苗生长和对N、P、K、Ca 营养元素的吸收.当油菜生长介质中钙浓度增大时,植株吸硼量和硼在新叶中的积累减少,老叶中积累增加。硼在油菜体内的运转系数在低硼条件下较大,并随钙处理水平的增加而下降.结果表明,在硼素供应有限的条件下,油菜体内硼仍具一定的移动性,钙则使硼的吸收和移动性下降.
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| 关 键 词： | 硼 移动性 油菜 钙 |
BORON ABSORPTION AND MOBILITY IN RAPE SEEDLINGS AS AFFECTED BY CALCIUM |
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| Shen Zhen-guo Shen Kang Zhang Xiu-sheng.BORON ABSORPTION AND MOBILITY IN RAPE SEEDLINGS AS AFFECTED BY CALCIUM[J].Chinese Bulletin of Botany,1992,9(4):33-37. |
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| Authors: | Shen Zhen-guo Shen Kang Zhang Xiu-sheng |
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| Institution: | Nanjing Agricultural University 210014 |
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| Abstract: | The effect of calcium on the absorption of boron by the rapcseedlings,and mobility of boron in
plants were studied in thispaper.Boron enhanced the absorption of N,P,K,Ca.Boron uptakeand accu-
mulation in young leaves were reduced,while in oldleaves were increased when the calcium concentration
of the mediumwas increased.There translocation index (ratio of boron concentration in young leaves:old
leaves) of boron was greater inmedium containing 0.025 ppm B than in 0.5 ppm B,and it decreasedwhen
there calcium was increased.These results showed that B isremobilized under boron deficiency,and boron
translocation fromold leaves to young leaves appeared to be inhibited by high concentraction of calcium. |
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| Keywords: | boron mobility rape calcium |
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