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播期是大豆高产栽培管理的重要手段。利用正常大豆播种期为对照,研究了三个相对晚播日期对菜用大豆物候期、根系、干物质及鲜食产量的影响。结果表明:晚播明显缩短生育期,播期越晚,播种到出苗的时间越短,整个生育日期越短,晚播能促进营养生长,增加苗期干物质的积累,但显著降低苗期根表面积和减少根长,根冠比下降。晚播也显著增加地上干物质的积累,6月14日播种R6期的干物重最高为:51.1g.株-1。适当的晚播可有利于菜用大豆的鲜荚产量形成。6月4日和6月14日播种R6期后10d鲜荚产量最高,可作为哈尔滨地区的菜用大豆的适宜播期。
Sowing date is an important method for soybean cultivation and management. The effects of three relative late sowing dates on the phenophase, root system, dry matter and fresh food yield of vegetable soybean were studied using normal soybean sowing date as control. The results showed that late sowing significantly shortened the growth period, the sowing date was later, the sowing time to emergence was shorter, the whole growing date was shorter, late sowing could promote vegetative growth, increase dry matter accumulation at seedling stage, but significantly reduce the seedling root Surface area and reduce the root length, root and shoot ratio decreased. Late seeding also significantly increased the accumulation of dry matter on the ground. The maximum dry matter weight at sowing stage R6 on June 14 was 51.1 g. Appropriate late sowing can be beneficial to the production of fresh pods of vegetable soybean. June 4 and June 14 sowing R6 period 10d fresh pods highest yield, can be used as sowing vegetables in Harbin suitable sowing date.