Authors

Abstract

In order to fully explore the influence of different pressure methods on the growth characteristics of buckwheat, a pressure test device with adjustable press force, and easy to replace the press wheel was designed. Using the dry matter quality of buckwheat roots, stems, leaves at seedling stage, plant height, number of main stem nodes, number of main stem branches, grain number per plant, grain weight per plant, and yield as evaluation indexes, single factor test on press force was carried out, and three-factor and three-level orthogonal test was carried out too with press wheel outer diameter, press force and press wheel type as factors. The results showed that the index values of buckwheat showed a trend of first increasing and then decreasing with the increase of press force. When the press force was 450 N, the growth and development of buckwheat performed best. The effects of press wheel outer diameter, press force, and press wheel type on growth characteristics of buckwheat was different. The effects of press force and press wheel type on the indexes were greater than that of press wheel outer diameter. The optimal pressure methods of buckwheat sowing are as follows: the press wheel outer diameter is 300 mm, the press force is 450 N, and the press wheel type is conical combined wheel. The results of this study could provide reference for the improvement of high-yield mechanized sowing technology of buckwheat and the design of rational pressure device.

Abstract in Chinese

为全面探究不同镇压方式对荞麦生长特性的影响，设计一种镇压力可调、镇压轮便于更换的镇压试验装置。以荞麦苗期根茎叶干物质量、株高、主茎节数、主茎分枝、单株粒数、单株粒重等农艺性状和产量为评价指标，开展了镇压力单因素试验。以镇压轮外径、镇压力、镇压轮型式为试验因素开展了三因素三水平正交试验。试验结果表明：荞麦各指标值随镇压力的增大呈先增大后减小的趋势。当镇压力为450 N时，荞麦生长发育情况表现最佳。镇压轮外径、镇压力、镇压轮型式对荞麦生长特性的影响差异性较大，镇压力和镇压轮型式对指标的影响比镇压轮外径大。荞麦播种的最优镇压方式为镇压轮外径为300 mm，镇压力为450 N，镇压轮型式为锥形组合轮。该研究结果可为荞麦高产机械化播种技术的提升、合理镇压装置设计提供参考。