为了明确镇油5号对机械化作业的适应性,促进油菜生产的全程机械化作业研究,开展了镇油5号不同播期下的密度试验和不同品种的播期试验.结果表明:镇油5号具有较强的耐迟播能力和较高的产量水平.在不同播期条件下,密度对镇油5号产量的影响较大.随着播种期的推迟,较高的密度(60万株/hm2、75万株/hm2)对镇油5号的产量有较强的补偿作用.随着密度的增加,镇油5号株高、茎粗等性状明显下降,但由于其茎秆柔韧性好,对机械化收割更为有利,说明镇油5号对机械化作业具有较好的适应性.%In order to confirm the adaptability of Zhenyou No. 5 to mechanized operation, and promote the whole mechanization in rape production, the planting density of Zhenyou No. 5 under the condition of different sowing dates was tested. The results showed that Zhenyou No. 5 had a higher yield and stronger tolerance to late sowing. Under the condition of different sowing dates, planting density had greater influence on the yield of Zhenyou No. 5. Along with the postponement of sowing date, higher planting density ( 600000 and 750000 plants/hm2 ) had better compensative function to the yield. The plant height, stem diameter and so on were obviously decreased with the increasing of planting density, but Zhenyou No. 5 had better adaptability to mechanized harvest due to the better suppleness of its stem.
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