| 李施蒙，袁玉婷，尼玛次仁，王晋雄.播期、播种量及施氮量对直播油菜大地 95 产量及农艺性状的影响[J].广东农业科学,2020,47(7):1-8 |
|
查看全文
HTML
播期、播种量及施氮量对直播油菜大地 95 产量及农艺性状的影响 |
| Effects of Seeding Date, Seeding Rate and Nitrogen Rate on Yield and Agronomic Characters of Direct - seeding Rape Dadi 95 |
| |
| DOI：10.16768/j.issn.1004-874X.2020.07.001 |
| 中文关键词: 西藏 油菜 栽培措施 产量 农艺性状 |
| 英文关键词: Tibet rape cultivation measures yield agronomic characters |
| 基金项目:国家油菜产业技术体系专项（CARS-12） |
|
| 摘要点击次数: 1302 |
| 全文下载次数: 797 |
| 中文摘要: |
| 【目的】确定直播油菜大地 95 的适宜播期、播种量和施氮量，为其栽培及推广应用提供技术指导。【方法】采用裂区设计，调查不同播期、播种量及施氮量下大地 95 生育进程及农艺性状表现。【结果】油菜生育进程主要受播期影响，同播期不同播种量、施氮量对油菜生育进程无明显影响。株高、分枝部位、分枝数目、主序长度、主序角果数、角果间距、单株角果数、角果长度、单株产量和小区产量在不同播期间差异达到极显著水平；株高、分枝部位和分枝数目在不同播种量间差异达到极显著水平。播期对产量的影响最大，早播可以提高油菜产量。小区产量和主序长度、单株角果数、单株产量呈显著正相关，与角果间距呈显著负相关。【结论】4 月 12 日播种，每 667 m2 播种量 0.75 kg、尿素用量 15 kg 处理的油菜产量最高，较平均值高 38.64%。油菜早播，适当提高播种量和施氮量，可以有效增加油菜产量；油菜晚播，低密度高施氮水平虽然可使植株生长旺盛，但不利于群体产量发挥，适当增加密度可以保证总体产量。 |
| 英文摘要: |
| 【Objective】The suitable seeding date, seeding rate and nitrogen rate of direct - seeding rape Dadi 95 were determined in order to provide technical guidance for its cultivation and promotion. 【Method】The growth process and agronomic characters of Dadi 95 were investigated under different seeding date, seeding rate and nitrogen rate combinations by using split plot design.【Result】The growth process of rape was mainly affected by seeding date. Under the same seeding date with different seeding rates and fertilization amounts, there was no obvious effect on the growth process of rape. The differences of plant height, branch position, branch number, length of main inflorescence, pod number of main inflorescence, pod spacing, pod number per plant, pod length, yield per plant and plot yield reached an extremely significant level in different seeding date treatments. The differences of plant height, branch position and branch number reached an extremely significant level under different seeding rates. Seeding date had the greatest impact on the yield. Early seeding could increase the yield of rape. The plot yield was positively correlated with the main sequence length, the pod number per plant and the yield per plant, but negatively correlated with the pod spacing.【Conclusion】When seeding on April 12, with seeding rate and urea amount set as 0.75 kg and 15 kg/667m2 respectively, the yield of rape was the highest, which was 38.64% higher than the average. For early seeding of spring rape, proper increase of seeding and fertilization rates could effectively increased the yield of rape. For late seeding of spring rape, low-density and high-level fertilization could make the plant grow vigorously, but it was not conducive to the development of group yield, and proper increase of density could ensure the overall yield. |
|
查看/发表评论 下载PDF阅读器 |
|
|
|
