成都平原从9月中旬开始,光热条件逐渐变差,这时抽穗扬花的晚稻,易形成结实不良,产量不高。近几年来,本区一些社队为了提早抽穗扬花期,改善结实时段的光热条件,利用早、中籼感温性强的特点,用作晚稻栽培,增产效果较好。为了确定早籼作晚稻在本区发展三熟制的地位和作用,研究能合理利用本区晚稻季节生态环境的品种组合,特进行本试验。 Chengdu Plain from mid-September, light and heat conditions gradually deteriorating, then heading flowering late rice, easy to form bad, yield is not high. In recent years, a number of communes and communes in this area have made good use of yield-increasing crops for the cultivation of late rice in order to prematurely flowering and flowering and improve the light and heat conditions in the strong period. In order to determine the position and function of early indica rice for late rice to develop three-cropping system in this area, this study was conducted to study the species combinations that could reasonably make use of the ecological environment of late rice in this area.