| 不同播期密度对甜荞麦农艺性状及产量的影响 |
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| 引用本文： | 姜 涛,李 玮. 不同播期密度对甜荞麦农艺性状及产量的影响[J]. 中国农学通报, 2015, 31(30): 169-172. DOI: 10.11924/j.issn.1000-6850.casb15030144 |
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| 作者姓名： | 姜 涛 李 玮 |
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| 作者单位： | (安徽省农业科学院作物研究所,合肥 230031） |
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| 基金项目： | 安徽省农业科学院种子工程项目“荞麦种质资源收集、整理与创新利用”(14D0203)；公益性行业（农业）科研专项子课题“沿江及环湖渍涝区适应性农作制度的建立”(201203032AH-04)。 |
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| 摘 要： | 为了探讨甜荞麦适宜的种植密度和播种期。以当地主栽品种为材料，在田间试验的基础上，通过设置种植密度（B1：45万/hm2、B2：75万/hm2、B3：105万/hm2、B4：135万/hm2）和播期（A1：7月28日、A2： 8月7日、A3：8月27日）2个处理因素，研究种植密度和播期对甜荞麦农艺性状及产量的影响。结果表明：播种密度对甜荞麦生育期、株高、主茎分枝数和主茎节数的影响不显著，而不同播期对甜荞麦生育期、株高和主茎节数有较大影响。其中，8月27日(A3)播种的生育期比7月28日(A1)、8月7日(A2)播种的生育期长10天左右，株高比A1、A2平均矮9 cm和12 cm，主茎节数相应减少3.8节和2.7节，差异达到显著水平，但对主茎分枝数的影响不显著。不同的播期、密度对甜荞麦的产量及产量构成因素均有较为显著的影响，各处理间差异达到显著水平，其中，产量最高的为A1B4处理，其产量为3997.55 kg/hm2，比产量最低的A2B1处理增产134.25%；A1B3、A1B4、A2B4处理的产量分别为3970.25、3997.55、3970.20 kg/hm2，是本试验中较高的产量，可见，105万/hm2~135万/hm2的播种密度和适当提早播期（7月底到8月上旬）能获得较高荞麦产量。
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| 关 键 词： | 沙丘 沙丘 种子库 种子萌发 种群繁衍 |
| 收稿时间： | 2015-03-17 |
| 修稿时间： | 2015-03-26 |
Effect of Different Sowing Dates and Planting Densities onAgronomic Traits and Yield of Fagopyrum Esculentum Moench |
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| Jiang Tao and Li Wei. Effect of Different Sowing Dates and Planting Densities onAgronomic Traits and Yield of Fagopyrum Esculentum Moench[J]. Chinese Agricultural Science Bulletin, 2015, 31(30): 169-172. DOI: 10.11924/j.issn.1000-6850.casb15030144 |
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| Authors: | Jiang Tao and Li Wei |
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| Affiliation: | (Crop Institute, Anhui Academy of Agricultural Sciences, Hefei 230031) |
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| Abstract: | The paper aims to investigate the suitable planting density and sowing date of buckwheat. The author used local cultivar to explore the effect of different planting densities (B1: 450000/hm2; B2:750000/hm2; B3: 1050000/hm2; B4: 1350000/hm2) and sowing dates (A1: in July 28; A2: in August 7; A3: in August 27) on the agronomic and yield traits of Fagopyrum esculentum Moench, and field trial was adopted by setting four planting densities and three sowing dates. The results showed that the seeding density had no significant effect on growth period, plant height, number of branches and the main stem node number. Among them, compared with sowing date of A1 and A2, A3 was ten days longer; plant height was 9 cm and 12 cm shorter than that of A1 and A2. Meanwhile, the average node number reduced by 3.8 and 2.7 segments correspondingly, except number of branches, other indicators were significantly influenced by different sowing dates. There were significant effects of different planting densities and sowing dates on yield composition of Fagopyrum esculentum Moench, and the difference reached significant level among treatments. The treatment of A1B4 had the highest yield of 3997.55 kg/hm2, increased by134.25% than that of A2B1 treatment which had the lowest yield. Treatments of A1B3, A1B4, A2B4 had higher yields of 3970.25 kg/hm2, 3997.55 kg/hm2 and 3970.20 kg/hm2, respectively. So, the corresponding suitable sowing date is from the end of July to early August and the density of 1050000-1350000/hm2 will be conductive to increase yield of Fagopyrum esculentum Moench. |
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| Keywords: | plant density sowing date agronomic traits yield |
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