采用3个国审夏大豆新品种,在广州分5个播期种植。结果表明:播期对大豆的农艺性状、产量和品质都有明显的影响。播期对产量、粗蛋白、粗脂肪及蛋脂总和的影响达显著或极显著水平;对不同品种的产量构成因素也有显著的影响,随着播期的延迟,单株产量、主茎荚数、分枝荚数、主茎粒数和分枝粒数呈显著下降趋势。 Three new national summer Soybean varieties were used and planted in Guangzhou at 5 sowing dates. The results showed that: sowing date had obvious effects on the agronomic characters, yield and quality of soybean. The effects of sowing date on yield, crude protein, crude fat and total fat were significant or extremely significant. The yield components of different varieties also had significant effects. With the delay of sowing date, the yield per plant, , The number of pods, the number of main stems and the number of branches were significantly decreased.