几年来的实践证明,双季早稻的播种,必须根据早稻育秧对气象条件的要求,掌握气候季节规律,进行适时播种。由于早稻育秧对气象条件的要求很严格,加之本省春季天气多变,给早稻、特别是连作早稻的安全育秧带来了艰巨的任务。因此,农民群众向来十分重视掌握季节播种。但季节还只能大致地说明温度一个因素的概念,即到了什么时候大气的热量状况大致达到了什么水准;它并没有细致地阐明温度的升降和天气的变化规律。在生产实践中常常有这种情况,即播种季节虽然不早,但是由于播种时的天气选择不好而仍然招致烂 Practice over the past few years proved that the planting of double-season early rice must be based on the requirements of the early rice seedling weather conditions, master the seasonal climate, for timely sowing. As the early rice seedlings on weather conditions are very strict requirements, combined with the changing weather in the spring of this province, to early rice, especially as early as the security of early rice seedlings brought a daunting task. Therefore, the peasant masses have always attached great importance to seeding the season. But the seasons can only give a rough idea of ​​the concept of temperature, which is the approximate time when the atmosphere’s caloric condition has reached its standard; it does not elaborate on the temperature rise and the weather patterns. It is often the case in production practices that the sowing season, though not early, is still bad due to bad weather at the time of planting