【摘要】 了解不同播期对大豆生长状况及产量的影响,对寻求适宜播期及优质高效生产有重要意义。以黑龙江省哈尔滨市大豆主栽品种为试验材料,通过3个播期处理（S1为5月1日,S₂为5月10日,S₃为5月21日）,研究不同播期条件下大豆生长状况及产量的变化规律。结果表明:S₁、S₂处理生育期日数延长;S₁、S₂处理在鼓粒期—成熟期干物质积累与分配及生长率明显高于S₃处理,干物质积累向果实转移量增大,其产量分别增加230.6、317.7 kg/hm²;S2处理在3个处理中最优,水热等气候资源利用程度高。哈尔滨市大豆适宜播期为5月8—10日,但适播期应考虑春季土壤水分或春季首场透雨,促进大豆生长发育,显著提高产量。更多还原

【Abstract】 To understand the effect of different sowing dates on the growth and yield of soybean is important forseeking suitable sowing date, improving quality and achieving efficient production. The main soybean cultivarin Harbin, Heilongjiang was used as test material, and three sowing date treatments（S₁was May 1st, S₂ was May10thand S₃ was May 21st） were conducted to study soybean growth and yield under different sowing dates. Theresults showed that the growth duration of S₁ and S₂ treatment was lengthened, dry matter accumulation andallocation and growth rate of S₁ and S₂ treatment were significantly higher than that of S₃ treatment during seedfilling period to mature period, transfer amount of dry matter accumulation to fruit was increased, the yieldincreased by 230.6 and 317.7 kg/hm², respectively; S2 was the optimum among the three treatments, theutilization degree of climate resources such as water and heat was higher. The suitable sowing date of soybeanwas May 8thto May 10 thin Harbin, but soil moisture or the first saturating rain in spring should be consideredfor the optimum sowing date, to promote soybean growth and development and improve the yield.更多还原