植物生长调节剂立丰灵对超级杂交稻抗倒性和冠层结构的影响  

Effects of Plant Growth Regulator Lifengling on Lodging Resistance and Canopy Structure of Super Hybrid Rice

作　　者：田小海[1] 王晓玲[1] 许凤英[1] 肖宇[1] 杨令芝[1] 吴晨阳[1] 马国辉[1,2] 

机构地区：[1]长江大学农学院,湖北荆州434025 [2]国家杂交水稻工程技术研究中心,湖南长沙410125

出　　处：《杂交水稻》2010年第3期64-67,73,共5页Hybrid Rice

基　　金：科技部粮食丰产科技工程"湖北水稻丰产高效技术集成研究与示范"(2004BA520A02);国家科技支撑计划"三大作物可持续超高产共性理论与技术模式研究"(2006BAD02AB)

摘　　要：以超级杂交稻Y两优1号为材料,探讨了3种不同氮肥施用水平和3种不同密度条件下施用新型抗倒植物生长调节剂立丰灵(5%调环酸钙.赤霉素)对植株抗倒性及冠层结构的影响。结果表明,施用立丰灵可使水稻下部伸长节间变短、增粗,而株高变化不大,从而提高抗倒性;施用立丰灵还能使剑叶和倒2叶的叶长缩短,叶宽增大,对后期冠层结构没有明显的负面影响。因此,立丰灵成为超级杂交稻生产上防治倒伏的重要技术选择。Using Y Liangyou 1,a super hybrid rice combination,as the material,the effects of Lifengling,a new plant growth regulator,on the lodging resistance and canopy structure of plants under the treatments with three levels of nitrogen application and three levels of planting density.The results showed that application of Lifengling shortened and thickened the lower elongated internodes without much variation in plant height,resulting in a significant improvement of lodging resistance.Application of Lifengling could also shorten the leaf length and widen the leaf width of the flag leaf and the second leaf from the top,but it had not a marked negative effect on the canopy structure at the late growing stage.Therefore,Lifengling could be a promising technical choice to prevent lodging in the production of super hybrid rice.

关 键 词：超级杂交稻 植物生长调节剂 立丰灵 抗倒性 冠层结构 

分 类 号：S511.05[农业科学—作物学] S365