毕节地区大豆品种生态类型及其分布规律和利用价值

SOYBEAN ECOLOGICAL TYPES AND THEIR DISTRIBUTION AND USE IN BIJIE DISTRICT

毕节地区大豆品种资源丰富,品种生态类型各异,在地理分布上有明显的规律。从东到西,随海拔逐渐上升,温度逐渐下降,早熟品种减少,中晚熟品种增多,平均全生育期逐渐延长;有限结荚习性品种逐渐增多,无限结荚习性和亚有限结荚习性的品种逐渐减少;白花类型增多,紫花则减少,株型是中间型品种由低海拔向高海拔递增。全区品种都以收敛型为主。籽粒大小随海拔升高而增大。全区大豆种皮包以黄色为主,茸毛以棕茸为主。

Soybean variety resources are very rich, various ecological types present obvious geographical distribution in Bijie district. From the east to the west within the district, early mature varieties are getting less,middle and late mature varieties are getting more, and mean growth period duration is getting longer; varieties with definite inflorescence more,purple less accompanied with the altitute getting higher and temperature getting lower. The higher altitute is, the more middle plant types are and the larger seed size is. But the main type of plant is convergent, the seedcoat color of most varieties is yellow and hair color is brown.