| 新疆旱寒区不同种植密度对超强抗寒冬油菜光合生理及产量的影响 |
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| 引用本文：李 强，顾元国，张艳红，张 乐，贾东海，王 娟，陈跃华.新疆旱寒区不同种植密度对超强抗寒冬油菜光合生理及产量的影响[J].西北农业学报,2014,23(11):62~69 |
| DOI:10.7606/j.issn.1004-1389.2014.11.012 |
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| 基金项目:新疆农业科学院优秀青年科技人才基金（Xjnky-2012-008）；新疆维吾尔自治区财政厅三院基金（SY12006）；农业部公益性行业（农业）科研专项经费（200903002-04）；国家油料产业技术体系（CARS-13）乌鲁木齐综合试验站。 |
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| 中文摘要:对新疆旱寒区不同种植密度下冬油菜干物质积累、光合生理及产量进行研究。结果表明，冬油菜群体干物质积累呈现Logistic曲线变化，干物质积累速率呈单峰曲线变化，群体干物质积累随密度增加而增加。种植密度影响冬油菜光合特性及干物质积累，并最终影响产量。种植密度为30×10～60×10株/hm时，随种植密度的增加，冬油菜的光合生理指标提高，进而增加油菜产量，但种植密度高于60×10株/hm时，随种植密度增加其产量呈逐渐降低的趋势。 |
| 中文关键词:旱寒区 冬油菜 种植密度 光合生理 产量 |
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| Effects of Plant Density on Photosynthetic Characteristics and Yield of Cold Resistance Winter Rapeseed in Dry and Cold Areas of Xinjiang |
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| Abstract:The winter rapeseed dry-matter accumulation, photosynthetic and yield with different plant densities in dry and cold areas of Xinjiang were studied. The results showed the process of the winter rapeseed dry-matter accumulation could be simulated with Logistic curve. Speed of dry-matter accumulation showed a single peak curve. With the increase of density the dry-matter accumulation decreased. Plant density had certain influence on photosynthetic characteristics, dry-matter accumulation and yield of winter rapeseed. Under planting density of 30×10-60×10 plant/hm, the photosynthetic indexes and yield of winter rapeseed increased with the increasing density. But when the planting density was up to 60×10 plant/hm,the yield reduced with the increased planting density. |
| keywords:Dry and cold areas Winter rapeseed Plant density Photosynthetic Yield |
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