Abstract: The two lines of Dianli 1（red quinoa）and Dianli 2（white quinoa）were used to study the effect of different sowing dates（April 1，April 15，May 1，May 15，June 1，June 15，July 1 and July 15）on main agronomic characters and grain mineral element content of quinoa，so as to clarify the best sowing date.The results showed that with the delay of sowing date，the growth periods of red quinoa and white quinoagenerally first decreased and then increased，and reached the shortest under the sowing date of June 15；The plant height of red quinoa and white quinoa first decreased and then increased，finally tended to be stable，reached the lowest under the sowing date of May 15，the highest under the sowing date of April 1，and the plant height of red quinoa was higher than that of white quinoa under all sowing dates；The yield per plant of white quinoa generally first increased and then decreased，while that of red quinoa showed an increase⁃decrease⁃increase⁃decrease trend，both of which were the highest under the sowing date of May1，and the yield per plant of red quinoa was generally higher than that of white quinoa；The 1 000⁃grain weight of white quinoa and red quinoa generally first increased and then decreased，the 1 000⁃grain weight of red quinoa was the highest under the sowing date of April 15，while that of white quinoa was the highest under the sowing date of May 15，and the 1 000⁃grain weight of white quinoa was generally higher than that of red quinoa；The calcium content of grain generally first increased and then decreased，the calcium content of white quinoa grain was the highest under the sowing date of May 1，and that of red quinoa grain was the highest under the sowing date of May 15；The magnesium content of red quinoa grain generally first increased and then decreased，reached the highest under the sowing date of June 15，the magnesium content of white quinoa grain was relatively stable，reached the highest under the sowing date of May 15，and the magnesium content of red quinoa grain was higher than that of white quinoa grain；The ferrum content of white quinoa grain was the highest under the sowing date of April 1，that of red quinoa grain was the highest under the sowing date of April 15；The zinc content of red quinoa grain was the highest under the sowing date of June 15，for white quinoa grain，except the sowing date of May 15，the zinc content of early⁃sowing and early⁃ripening quinoa grain was higher than that of late⁃sowing and late⁃ripening quinoa grain，and the highest was under the sowing date of May 1.To sum up，the yield per plant and the contents of calcium，magnesium and zinc in grain of red quinoa are higher than those of white quinoa；The suitable sowing date can effectively improve the yield and grain mineral element content of quinoa，and the suitable sowing date is from May to June.

Key words: Quinoa, Sowing date, Yield, Agronomic trait, Mineral element

摘要： 以滇藜1号（红藜）和滇藜2号（白藜）2个品系为材料，研究不同播期（4月1日、4月15日、5月1日、5月15日、6月1日、6月15日、7月1日和7月15日）对藜麦主要农艺性状及籽粒矿物质元素含量的影响，以明确最佳播期。结果表明，随着播期的推迟，红藜和白藜的生育期总体上均呈先降低后升高的趋势，均在播期6月15日下最短；红藜和白藜的株高总体上均呈先降低后升高并趋于平稳的趋势，播期5月15日下最矮，播期4月1日下最高，且所有播期下红藜株高高于白藜；白藜单株产量总体呈先升高后降低的趋势，红藜单株产量呈升高—降低—升高—降低的趋势，均在播期5月1日下最高，且总体上红藜单株产量均高于白藜；白藜和红藜的千粒质量总体上均呈先升高后降低的趋势，红藜千粒质量在播期4月15日下最高，白藜千粒质量在播期5月15日下最高，且总体上白藜千粒质量高于红藜；籽粒钙含量总体上先升高后降低，在播期5月1日下白藜钙含量最高，在播期5月15日下红藜钙含量最高；红藜籽粒镁含量总体上先升高后降低，在播期6月15日下最高，白藜籽粒镁含量相对稳定，在播期5月15日下最高，且红藜籽粒镁含量均高于白藜；白藜籽粒铁含量在播期4月1日下最高，红藜籽粒铁含量在播期4月15日下最高；红藜籽粒锌含量在播期6月15日下最高，白藜籽粒锌含量除播期5月15日外，早播早熟的藜麦籽粒锌含量均高于晚播晚熟的藜麦，播期5月1日下最高。综上，总体上红藜的单株产量及籽粒钙、镁、锌含量均高于白藜；适宜的播期能有效地提高藜麦产量和籽粒矿物质元素含量，5—6月为适宜播期。

关键词: 藜麦, 播期, 产量, 农艺性状, 矿物质元素