| 品种密度互作对胡麻抗倒伏特性的影响 |
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| 引用本文： | 郭芳,牛俊义,高珍妮.品种密度互作对胡麻抗倒伏特性的影响[J].甘肃农业大学学报,2016(3):72-76. |
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| 作者姓名： | 郭芳 牛俊义 高珍妮 |
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| 作者单位： | 甘肃农业大学农学院，甘肃省干旱生境作物学重点实验室，甘肃 兰州 730070 |
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| 基金项目： | 现代农业产业技术体系建设专项资金(CARS-17-GW-9)． |
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| 摘 要： | 【目的】探讨不同种植密度对不同胡麻品种抗倒伏能力的影响.【方法】以‘定亚23号’‘晋亚10号’和‘轮选3号’为试验材料,设置525、750、975万粒/hm2 3个密度梯度,测定植株茎秆的物理性状、力学和抗倒伏特性,并分析茎秆性状与抗倒伏特性的相关性.【结果】‘定亚23号’的株高和重心高度较‘轮选3号’分别高出了4.61%和8.95%,不利于植株的抗倒伏,‘轮选3号’在各个生育时期茎粗与壁厚都较高,表现出了较强的抗倒伏能力;种植密度由525万粒/hm2增加到750万粒/hm2时,‘晋亚10号’的倒伏指数增加了1.40%,而‘定亚23号’增加了11.92%.【结论】种植密度的增加对抗倒伏能力差的品种影响更大,对中抗型品种的影响则相对较小.
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| 关 键 词： | 胡麻 种植密度 品种 茎秆性状 |
Effects of variety and density interaction on flax lodging resistance |
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| Abstract: | Obj ective]To investigate the effects of different planting density on lodging resistance of different species of flax.Method]Variety‘Dingya 23’‘Jinya 10’and‘Lunxuan 3’were used by 3 densi-ties (5.25,7.5 and 9.75 million grains/hm2 ).The physical characteristics,mechanical and lodging resist-ance traits of stem were determined,and the correlation between ability to lodging resistance and stalk characteristics was analyzed.Result]The plant height and height of gravity center of ‘Dingya 23’had 4.61% and 8.95% high than‘Lunxuan 3’,which showed sensitive for lodging of plants,‘Lunxuan 3’had a higher stem diameter and wall thickness in each growth period,which showed a stronger lodging resist-ance.The lodging index of ‘Jinya 10’and ‘Dingya 23’increased by 1.40% and 11.92% when planting density increased from 5.25 million grains/hm2 to 7.5 million grains/hm2 .Conclusion]Planting density has more effect on low lodging resistance varieties,less effect on middle lodging resistance varieties. |
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| Keywords: | flax planting density varieties culm traits |
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