施氮量对胡麻干物质积累分配及产量的影响 |
| |
引用本文: | 贾海滨,闫志利,牛俊义,谢亚萍,李爱荣,高俊山.施氮量对胡麻干物质积累分配及产量的影响[J].河北农业技术师范学院学报,2013(4):25-31. |
| |
作者姓名: | 贾海滨 闫志利 牛俊义 谢亚萍 李爱荣 高俊山 |
| |
作者单位: | [1]乌兰察布市农业科学研究所,内蒙古集宁012000 [2]河北科技师范学院职业教育研究所 ,内蒙古集宁012000 [3]甘肃农业大学农学院 ,内蒙古集宁012000 [4]张家口市农业科学院 ,内蒙古集宁012000 [5]鄂尔多斯市农业科学研究所,内蒙古集宁012000 |
| |
基金项目: | 国家现代农业产业技术体系建设专项资金资助项目(项目编号:CARS-17-GW-9). |
| |
摘 要: | 通过大田试验,研究了施氮量对胡麻干物质积累分配及产量的影响。结果表明,胡麻干物质积累随施氮量增加进程加快。苗期至盛花期、青果期至成熟期干物质积累速率分别随施氮量增加而提高、降低,不同施氮处理最高干物质积累速率均出现在盛花期。胡麻完成干物质积累的时间随施氮量增加而提前,中氮水平干物质积累速率最大。施氮对长生育期胡麻品种干物质分配无明显影响,对短生育期胡麻品种影响较大。合理施氮可有效提高胡麻单株有效果数和千粒质量,单位面积产量与单株干物质量呈显著正相关,氮肥农学效率随施氮量增加而降低。河北省张家口市和内蒙古自治区鄂尔多斯试验区最优施氮量分别为90.00,36.80kg·hm-2,比传统不施氮肥分别增产30.84%,16.84%。
|
关 键 词: | 胡麻 施氮量 干物质积累 分配 产量 |
Effect of Nitrogen Application Rate on Dry Matter Accumulation and Distribution of Oil Flax |
| |
Authors: | JIA Hai-bin YAN Zhi-li NIU Jun-yi XIE Ya-ping LI Ai-rong GAO Jun-shan |
| |
Institution: | 5 (1 Wulanchabu Agricultural Research Institute, Jining Inner Mongolia, 012000; 2 Hebei Normal University of Science & Technology ;3 College of Agronomy, Gansu Agricultural University; 4 Zhangjiakou Academy of Agricultural Sciences ;50rdos Agricultural Research Institute ;China) |
| |
Abstract: | Field experiments were conducted to investigate the impact of different nitrogen (N) application rate on plant dry matter accumulation and distribution regulation as well as yield of oil flax. Results showed that the dry matter accumulation process accelerated with the increase of N application rate. The dry matter accumulation rate increased during the period from seedling stage to full flowering stage and decreased during the period from young fruit stage to ripping stage with the increase of N application rate. The maximum value of dry matter accumulation rate all appeared at full flowering stage under different N treatments. The dry matter accumulation finished ahead of time with the increase of N application rate. And the dry matter accumulation rate ranked top under middle N growth period oil flax cultivars, level. Applying N significantly influenced the but less obvious to the long growth period ones. dry matter distribution of shot Reasonable N application rate increased available pods and thousand-grain weight. The actual output per unit area was significantly positive with dry matter per plant. N use efficiency declined with the increase of N application rate. The optimal N application rate were 90.0 kg/hm2 in Zhangjiakou area and 36.80 kg/hm2 in Ordos area, respectively, increased oil flax yield by 30.84% and 16.84% compared with zero N application. |
| |
Keywords: | oil flax (Linum usitatissimum L ) N application rate dry matter accumulation distribution yield |
本文献已被 维普 等数据库收录! |