【摘要】 双季早稻是粮食生产的重要组成部分。近年来，茬口紧张、季节性矛盾突出、自然灾害频繁发生等问题突出，生产上急需特早熟的早稻新品种。通过收集和鉴定优异特早熟种质资源，结合传统育种和分子育种技术，在协调好特早熟和高产之间关系的基础上，全面提升稻米品质和抗性。现已创制一批特早熟早稻新品系，如庐早301、庐早302、南陵早3号、南陵早4号，这些新品系生育期均较对照品种早熟5 d以上，且丰产性、抗病性和米质表现优良。该研究将为双季早稻产业发展提供新的思路与动力。更多还原

【Abstract】 Double-cropping early rice is an important part of staple crop rice.In recent years, there were prominent problems, such as intensive crops rotation, prominent seasonal contradictions, frequent occurrence of natural disasters.There was an urgent need for new special-early maturing early rice in production.By collecting and identifying excellent special-early maturing germplasm resources, combining traditional breeding and molecular breeding techniques, we aimed to coordinate the relationship between early maturing and high yield, and comprehensively improve rice quality and resistance.A number of new special-early maturing early rice varieties were developed, such as Luzao 301,Luzao 302,Nanlingzao 3,Nanlingzao 4,and the growth period of them were more than 5 d earlier than the control.And the yield ability, disease resistance and rice quality were excellent.This research provided new ideas and impetus for the development of double-cropping early rice.更多还原