| 方彦,孙万仓,李强,周继红,叶剑,杨仁义,武军艳.北方旱寒区冬油菜种植密度对生态条件的响应[J].干旱地区农业研究,2012,30(5):46~50 |
| 北方旱寒区冬油菜种植密度对生态条件的响应 |
| Response of planting density of winter rapeseed to different ecological condition in north drought and cold region |
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| DOI：10.7606/j.issn.1000-7601.2012.05.09 |
| 中文关键词: 冬油菜 适宜种植密度 北方旱寒区 |
| 英文关键词:winter rape suitable planting densities north drought and cold region |
| 基金项目:农业部公益性行业(农业)科研专项经费项目(200903002-04)；国家高技术研究发展计划(863计划)项目“强优势油菜杂交种的创制与应用(2011AA10A104)”； 现代农业产业技术体系建设专项资金项目(CARS-13) |
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| 中文摘要: |
| 在北方旱寒区不同生态条件下开展了冬油菜适宜种植密度试验，研究了种植密度对冬油菜越冬率、生育期、产量及农艺性状的影响。结果表明，越冬率随种植密度增大而降低；密度对
生育期存在一定的影响；随着种植密度的增加，分枝部位增高，株高、植株总分枝数、主花序长度、千粒重、单株产量均降低。角粒数也受种植密度影响，随密度增大，角粒数基本呈
抛物线状变化。冬油菜在新疆、酒泉、靖远和北京地区适宜种植密度范围不同，分别为60～120、60～75、60～90万株/hm2和60～90万株/hm2。北方旱寒区冬油菜适宜的种植密度范围在60～90万株/hm2。 |
| 英文摘要: |
| The suitable planting density of winter rapeseed was studied in north drought and cold region. The effect of planting density on winter-survival rate, growth period, yield, and agriculture character were discussed. The results showed that the winter-survival rate was decreased with the increase of planting density. The planting densities also had some effect on the growth period. As the planting density increased, the location of the branch raised, but the plant height, total branches, length of main inflorescence, 1000-seed weight and yield per plant all declined. Seeds per silique showed a parabolic curve with increase of planting density. The suitable planting density in Xinjiang, Jiuquan, Jingyuan and Beijing was 6×105～1.2×106 plants/hm2, 6×105～7.5×105 plants/hm2, 6×105～9×105 plants/hm2 and 6×105～9×105 plants/hm2, respectively. In conclusion, the suitable planting density in north drought and cold region was 6×105～9×105 plants/hm2. |
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