Comparative Reseach on the Vegetable Soybean Sowing in Spring and Summer

Two vegetable soybean lines of Liao 00139-1 and Liao 00128-1 were planted in spring(May 10)and summer(June 29)in 2007,and the agronomic traits of spring and summer planted vegetable soybean,including growth dynamic,fresh yield components and fresh yield were compared.Results showed that,summer planting vegetable soybean had short growth duration,generally about 80 days pods can be picked up.The average plant height of spring planting vegetable soybean was higher than that of summer planting during the nutrition growth period.Each growth period of spring planting vegetable soybean were relatively postponed than those of summer planting.Spring planting vegetable soybean had better yield performance for more effective branches and pods,while 100-fresh seed weight between the two planting season was the same.100 fresh pod weight(Liao 00139-1 were 204.2 g and 234.1 g,Liao 00128-1 were 253.3 g and 231.9 g for spring and summer planting,separately)was related to the lines.The fresh pod yield of spring and summer planting vegetable soybean for Liao 00139-1 were 12510.5 kg·ha-1and 5229.4 kg·ha-1,for Liao 00128-1 were 12 282.1 kg·ha-1 and 6 762.6 kg·ha-1,separately.