我省粳稻三系配套成功,为稻区生产开辟了新的增产途径,经各地试种,初步证实杂交水稻具有苗壮、根旺、叶厚、穗大、粒多等生长优势,除少数田块因晚播晚插有所减产以外,多数地区比现有栽培品种增产10～20%。当然,目前推广的杂交水稻也具有分蘖成穗低、抗病虫性能较弱及结实率较差等弱点,如 The three lines of Japonica rice in our province have been matched with each other and opened up a new way of increasing production for the rice production areas. Preliminary trials have confirmed that hybrid rice has the advantages of seedling growth, root vigor, leaf thickness, spike size and grain growth. Block due to late broadcast late cut has been cut, in most areas than existing cultivars 10-20% increase. Of course, the current popularized hybrid rice also has such problems as low tiller number, low pest resistance and poor seed setting rate,