WU Hai-ying,YU Xiao-bo,LIANG Jian-qiu,et al.Effect of Sowing Time on Agronomic Traits, Yield and Quality of Intercropped Specific High-protein Soybean in Maize-Soybean Relay Strip Intercropping System[J].Soybean Science,2015,34(05):801-807.[doi:10.11861/j.issn.1000-9841.2015.05.0801]
播期对套作专用高蛋白大豆农艺性状、产量及品质的影响
- Title:
- Effect of Sowing Time on Agronomic Traits, Yield and Quality of Intercropped Specific High-protein Soybean in Maize-Soybean Relay Strip Intercropping System
- Keywords:
- Intercropping; Sowing date; High-protein soybean; Agronomic trait; Yield
- 文献标志码:
- A
- 摘要:
- 为探寻四川东北地区套作大豆的最适宜播期,设置6月5日、6月15日、6月25日、7月5日、7月15日、7月25日6个播期,选用套作高蛋白专用大豆品种南豆12和南夏豆25,在大田试验下研究其在玉米-大豆带状套作模式下的生育进程、农艺性状、产量及品质表现,结果表明:随着播期的推迟,大豆营养生长期(V)、生殖生长期(R)和全生育期均逐渐缩短,R/V增加,且播期的改变对南豆12生育期构成的影响明显大于南夏豆25;株高降低,茎粗减小,分枝数、主茎节数和完整粒率下降,经济系数减小,空荚率上升;各处理下南豆12和南夏豆25产量和蛋白质含量以6月15日表现最好,产量分别为2 172.6和2 539.7 kg.hm-2,蛋白质含量分别为49.1%和47.8%;6月25日次之。由此可见,四川东北地区套作高蛋白大豆的适宜播期为6月中旬和下旬。
- Abstract:
- To determine the best sowing time of intercropped soybean in northeastern region of Sichuan Province, two high-protein soybean cultivars (Nandou 12 and Nanxiadou 25) with better adaptation to intercropping were planted at six dates (June 5th, June 15th, June 25th, July 5th, July 15th, and July 25th) in maize-soybean intercropping system.Growth stages, agronomic traits, yield, and seed quality were investigated in this experiment.The results showed that the vegetative, reproductive and whole growth stages became shorter, but the ratio of reproductive stage and vegetative stage increased under the delay of sowing times.Delayed planting date had higher degree of effects on component of growth stage on Nandou 12 than Nanxiadou 25.Plant height, stem diameter, branch number, nodes number on mainstem, seed filling rate and harvest indexes decreased, while non-filled rate increased under delayed sowing times. Two tested soybean cultivars had the highest yield and protein content at the plating date of June 15th. At this plant date, the yields of Nandou 12 and Nanxiadou 25 were 2 172.6 and 2 539.7 kg.ha-1, respectively, and the protein content of Nandou 12 and Nanxiadou 25 were 49.1% and 47.8%, respectively.Two soybean cultivars also had higher level of seed yield and protein yield at the planting date of June 25th in this experiment.In summary, the best plating dates in northeastern region of Sichuan Province is middle and late June.
参考文献/References:
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备注/Memo
?基金项目:现代农业产业技术体系四川区域创新团队(四川省农业厅资金支持);国家现代农业产业技术体系(CARS-04-CES25)。