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在当前双季稻、三熟制面积不断扩大,季节矛盾突出的情况下,合理安排早稻品种的栽种季节,是夺取早稻高产和全年高产的关键。但是,往往有可能由于品种特性不明,季节安排不当,造成减产。因此,摸清某些主要推广品种对栽种季节的适应性,为品种搭配、茬口安排提供依据,是当前生产上的迫切要求。我们在1973年就我省当前推广的四个早稻品种进行了分期播种试验。现将试验方法和结果概述如下,以供参考。
Under the circumstances that the current double-cropping paddy and three-cropping system are expanding constantly and the seasonal contradictions are prominent, the rational arrangement of the planting season for early rice varieties is the key to seizing the high yield of early rice and the annual high yield. However, it is often possible that production will be cut due to unknown species characteristics and improper seasonal arrangements. Therefore, to find out some of the major varieties to promote the adaptability of the planting season, with varieties, crop arrangement to provide the basis for the current production is an urgent requirement. In 1973, we conducted staged seeding experiments on the four early rice varieties currently being promoted in our province. The test methods and results are summarized below for reference.