Yield Development Characteristics and Relative Factors of Autumn Planting-Early Rice in Hubei
To clarify the characteristics of early rice varieties suitable for autumn planting in Hubei province, 12 early rice cultivars were selected with two late rice varieties as control to investigate the yield components, heading stage of autumn planting-early rice as well as the correlation of yield components and the characteristic of early rice itself. The results showed that Liangyou 287 and Jinyou 402 should be selected when the early rice sown before July 8; when sown from July 8th to the 18th, Jinyou 47 or Liangyou 287 should be used; autumn planting of early rice should not be carried out after July 23, Yield of Rongyou 9, Xiangzaoxian 24 and Fengyou T025 were lower when sowing at scheduled time thus should not be applied as autumn planting cultivar in Hubei province. The regular growth period of early rice was negatively correlated with the yield of autumn planting. Early rice with greater tillering ability and more grains per panicle should be selected for earlier sowing date, and vice versa. Prior consideration should be given to early rice varieties with shorter growing period when selecting autumn planting early rice; meanwhile, suitable cultivation measures should be conducted to promote grain-filling of rice.
early riceautumn plantingyield developmentgrowth periodrelating factors
NETL
NSTL
万方数据
维普
