| 李 晶，李双双，付 驰，许为证，芦玉双，魏 湜.密度和施氮水平对小黑麦叶绿素荧光特性的影响[J].麦类作物学报,2011,31(1):143 |
| 密度和施氮水平对小黑麦叶绿素荧光特性的影响 |
| Effect of Density and Nitrogen on Chlorophyll Fluorescence Characters of Triticale |
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| DOI：10.7606/j.issn.1009-1041.2011.01.025 |
| 中文关键词: 小黑麦 密度 氮素 叶绿素荧光 |
| 英文关键词:Triticale Density Nitrogen Chlorophyll fluorescence |
| 基金项目:黑龙江省农业委员会资助项目（GC05B708）；农业部公益性行业（农业）科研专项（200903010 5）。 |
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| 中文摘要: |
| 为了揭示光合作用对种植密度及氮素营养的响应机制，以小黑麦东农5305和东农96026为试验材料，采用PAM 210调制叶绿素荧光仪测定了小黑麦旗叶的主要叶绿素荧光参数，研究了种植密度及施氮水平对荧光参数的影响。结果表明，适量施氮和降低种植密度（东农5305密度300万株·hm-2，施氮水平75 kg·hm-2；东农96026密度450万株·hm-2，施氮水平150 kg·hm-2）可改善小黑麦叶片光合功能，提高最大荧光产量和PSⅡ光能转换效率及PSⅡ电子传递活性，抑制非辐射能量的耗散。说明合理的种植密度及氮素营养可改善小黑麦光合功能，对东农5305的影响较东农96026大。 |
| 英文摘要: |
| In order to reveal the response mechanism of photosynthesis to plant density and nitrogen nutrition, we took Dongnong5305 as experimental materials and used the German Walz's product PAM-210 to measure the main chlorophyll fluorescence parameters of triticale, and then the impact of different density and nitrogen levels on the fluorescence parameters of triticale was analyzed. The results showed that under the conditions of proper increase of nitrogen levels and decrease of density, i.e. Dongnong5305 at the density 3 million·hm-2 and nitrogen level 75 kg·hm-2, Dongnong96026 at the density 4.5 million·hm-2 and nitrogen level 150 kg·hm-2 Leaf function of triticale could be improved, and the maximum fluorescence yield, as the largest solar energy conversion efficiency of PS Ⅱ and high electron transfer activity could be achieved, nonradiative energy dissipation was inhibited, and the best photosynthesis protection mechanisms was obtained at the same time. The improvement of photosynthesis in Dongnong5305 was bigger than that in Dongnong 96026. |
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