关键词: 高粱, 高粱, 良种繁育, 对策

Abstract:

Five winter wheat cultivars, main cultivars planted in Shandong Province, were tested in yield and nutrients use efficiency under recommended fertilization system in North China Plain. The results showed that significant differences in grain yield were found within 5 cultivars, ‘Jimai22’ got the highest yield, and ‘Tainong18’ and ‘Shannong17’ followed it. From yield components analysis, different depended factors were found to get high yield for different wheat cultivars, ‘Jimai22’ and ‘Shannong17’ depended on high population at harvest to obtain high yield, but ‘Tainong18’ depended on kernels per panicle. Under the same nutrients application condition, nutrients uptake and nutrients use efficiency were different with different genotype. N, P, K uptake of ‘Tainong18’ were lower than others cultivars, it indicated that ‘Tainong18’ got high nutrients physiological efficiency and translocation ratio. Grain yield and nutrients use efficiency were taken into consideration, ‘Jimai22’ and ‘Tainong18’ were worth to be selected for yield and nutrients efficiency coordination.