| 土壤水分含量对水稻农艺性状及维管束系统分化的影响 |
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| 引用本文： | 戴常军.土壤水分含量对水稻农艺性状及维管束系统分化的影响[J].吉林农业大学学报,2003,25(2):124-127,130. |
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| 作者姓名： | 戴常军 |
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| 作者单位： | 黑龙江省农科院谷物品质分析中心,黑龙江,哈尔滨,150086 |
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| 摘 要： | 在土壤水分含量不同的栽培务件下对4种类型稻的维管束系统分化结果和维管束系统与农业性状的关系进行研究。结果表明：水分不足对稻秆及秆中维管束的影响是相互的：稻秆的发育情况影响了维管束变化，同时维管束的变化影响了稻秆的发育，最终影响营养物质从根部、叶部向籽粒运输．从而使结粒数、稔实率、千粒重、产量下降。4种生态型水稻维管束系统与一次及高次枝梗数目、结粒数、千粒重等有类似的相关性．而且水分不足时反应出相同的结果。说明土壤水分对维管束系统的分化有很大的影响，水分不足将使维管束面积变小．推管束比增大．从而使产量变小。
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| 关 键 词： | 土壤水分含量 水稻 农艺性状 维管束 系统分化 |
| 文章编号： | 1000-5684(2003)02-0124-04 |
Effects of Edaphic Water Content on Agricultural Characters and Vascular Bundle Systems of Rice |
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| DAI Chang-jun.Effects of Edaphic Water Content on Agricultural Characters and Vascular Bundle Systems of Rice[J].Journal of Jilin Agricultural University,2003,25(2):124-127,130. |
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| Authors: | DAI Chang-jun |
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| Abstract: | System differentiation of vascular bundles and the relationship between agronomic characters and the system itself of four types of rice were studied under the cultivating conditions of different edaphic miosture. The results showed that rice straw growth and fascicular alteration interacted when water was deficient. It not only affected the transportation of nutritious substance from rhizine and leaf to kernel, but also led to the decrease of agronomic characters and yield. 4 ecotypes of rice vascular bundle systems and yield correlative parameters had analogical correlativity and representation when water was deficient. Edaphic water content affected the system differentiation of vascular bundles vastly. It was the primary environmental factor. Area of vascular bundles and yield decreased and ratio of vascular bundles increased when water was deficient. |
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| Keywords: | agronomic character vascular bundle (Vb) edaphic water content rice |
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