组合播种方式对小麦群体及产量形成的影响

为了提高玉米秸秆还田后小麦播种质量，为广大麦玉轮作区小麦生产提供技术支撑，通过采用将不同小麦播种方式进行组合的研究方法，对小麦群体发育及产量结构进行分析。结果表明：在播量相同情况下，“撒播+宽幅播”的组合播种方式可以显著降低田间缺苗断垄单元的分布，提高田间群体生物量积累。通过试验研究得出：在适宜播量条件下，“撒播+宽幅播”的组合播种播量比例以1:2为宜。‘舜麦1718’在播量为135.0 kg/hm²时，播量比例为1:2的“撒播+宽幅播”的组合播种方式，产量显著高于传统条播、宽幅播及撒播等单一播种方式。

Effect of Combination Sowing Method on Population and Yield Formation of Winter Wheat

In order to improve sowing quality of winter wheat after maize straw returning and technology to support for wheat production in wheat-maize rotation areas. 2-year field experiments of different planting ways were conducted on development of wheat population and yield formation. The results indicated that, the combination sowing way (broadcast sowing + broad width sowing) could significantly reduce the distribution of uneven seedlings unit in field and significantly enhance biomass accumulation of winter wheat under same seeding rate. In the combination sowing method, the seeding rate ratio of broadcast sowing and broad width sowing should be controlled at 1:2. The wheat yield of combination sowing way was significantly higher than the conventional drilling with same wheat variety ‘Shunmai1718’ and same seeding rate.