Tibet The Seed Germination Characteristics Under Low Temperature and Spring Sowing Study of 8 Rapeseed Varieties

To explore the low temperature germination characteristics of rapeseed, 8 main cultivars were selected for experiments in incubators at 20℃, 16℃, 12℃ and 8℃, respectively, to measure analyze potential, rate, root length, bud etc. The results showed that there was significant difference potential tested rapeseeds temperatures. And 8℃ significantly reduced potential. With decrease temperature, growth roots buds inhibited significantly. There differences both temperatures varieties. length could be used as index evaluate seed rapeseed under temperature. In addition, screen varieties suitable spring sowing green manure, test carried out. study found fresh grass yield “Huyouzao No.1” 1712.53 kg/m 2 , which much higher than other 7 Its relative second only “Huyou17” its next “Huyoufei respectively. can provide a reference early manure.