杂交早稻是我省水稻生产中开辟的一条新途径,它突破了“北纬二十八度‘禁区’”。论,跨进洞庭湖,在我省江南、江北双季稻区蓬勃发展,展示了广阔的前景。 发展杂交早稻,将有利于打破我省目前早稻生产徘徊局面。按理早稻属我省一季得天独厚的作物,既无致害的低、高温的影响,又无旱涝的威胁,一直被认为是一季稳产高产作物。但是,近几年来,早稻生产远不及二季晚稻的发展速度。“六五”期间,由于杂交晚稻的发展和常规晚粳良种的更新,生产水平有了明显的提高,大大缩小了早、晚稻之间的产量 The hybrid early rice is a new way opened up for rice production in our province, which broke through the “restricted area at 28 degrees north latitude”. On the cross into Dongting Lake, in our province Jiangnan, Jiangbei double cropping rice area to flourish, showing a broad prospect. The development of hybrid early rice will help break the current situation in our province hovering early rice production. Rationale Early rice is a unique seasonal crops in our province, both low and high temperature effects of pollution, but also no threat of droughts and floods, has been considered a quarter of stable high-yield crops. However, in recent years, the production of early rice is far behind the growth rate of late rice in the second season. During the “Sixth Five-Year Plan” period, due to the development of hybrid late rice and the regular late japonica seed improvement, the production level has been significantly improved, greatly reducing the yield between early and late rice