从六十年代矮化育种的矮秆品种在生产上广泛应用,特别是七十年代中期“矮、丰、抗、早、优”五字育种目标提出以后,国内水稻育种工作者,就如何进一步提高水稻单产,有着各种设想和研究方法,概括起来主要有以下一些; 一、株形育种沈阳农学院杨守仁教授根据三十多年的水稻育种实践和总结国内外育种的经验,提出了“理想株形”育种。即在耐肥抗倒、生长量大(适于密植)和谷草比大等特点基础上要求分蘖强而穗头整齐,上部叶片坚挺直立,这种株形还要因地理生 Dwarf breeds from the sixties dwarf breeding varieties widely used in the production of production, especially in the mid-seventies “short, abundance, resistance, early, excellent” five-character breeding objectives put forward after the domestic rice breeders on how to further There are a number of ideas and research methods to improve rice yield, summed up mainly in the following: First, plant type breeding Shenyang Agricultural College Professor Yang Shouren based on thirty years of rice breeding practice and sum up the experience of breeding at home and abroad put forward the “ideal Strain ”breeding. That is, on the basis of the characteristics of resistance to fat and heavy loss, large amount of growth (suitable for close planting) and large ratio of grain to straw, it requires that the tiller should be strong and the head should be neat and the upper leaves should be firm and upright.