不同播种期小豆生态类型的生育特性和生产力

Studies on growth characters and productivities of different adzuki bean ecotypes in two sowingdates.

来自不同地区的２０个小豆品种在杭州进行两期播种的结果表明，随着纬度的增加，小豆感光性减弱，全生育期缩短．早播（５月３０日）比迟播（７月２日）生育期延长．高纬度地区的品种主要表现为花期延长，而低纬度地区的品种主要表现为营养生长期延长，花期基本不变．除辽宁品种外，其它品种皆以迟播产量和产量性状为优．小豆的硬实率早播明显高于迟播，不同地区之间以山东品种为低，随着纬度的增加，小豆的煮烂性变差，两播期间无显著差异．种皮比率两播期间和不同地区间也较相近．

Studies on 20 Adzuki beans from different regions in two sowing dates at Hangzhou have been conducted.The results show that the photosensitive character of Adzuki bean gets weaker and its total growth period(TGP)becomes shorter with the increasing of latitude. TGP on early sowing date(May,30)is longer than that on late sowing date(July,2).Flowering period of varieties from high latitude gets longer and vegetative growth period of varieties from low latitude becomes longer. Yield and yield compoent of Adzuki beans are relatively better in late sowing date expect varieties from Liaoning. Hard seed percentage on early sowing date is higher than that on late sowing date,and varities from Shandong have lower hard seed percentage. Seed-bioled charac-ter get much worse with the increasing of latitude and there is no difference between two sowing dates. Seed coat ratio is similar between two sowing dates and between different regions,respec-tively.