聚糠萘合剂对玉米叶片衰老及产量的影响  

Effects of PASP-KT-NAA on Maize Leaf Senescence and Yield

作　　者：解振兴[1] 董志强[1] 薛金涛[1] 

机构地区：[1]中国农业科学院作物科学研究所,北京100081

出　　处：《玉米科学》2010年第1期82-86,共5页Journal of Maize Sciences

基　　金："十一五"国家科技支撑计划项目粮食丰产科技工程(2006BAD02A13);"973"项目(2009CB118601)

摘　　要：以中单808为试验材料,结合不同氮肥水平,研究了聚糠萘合剂(PKN)对玉米形态及产量的影响。结果表明:PKN处理不同程度地降低了株高和穗位高,显著增加了玉米灌浆期至成熟期的叶面积指数和叶绿素含量,延缓了玉米后期叶片衰老;在不施氮肥和氮肥过高时,PKN处理促使干物质由营养器官向子粒转运。从穗部性状来看,PKN处理增加了穗行数和百粒重,产量也较对照提高。Effects of PASP-KT-NAA(PKN) on morphology and yield of Zhongdan808 was studied in field exper-iment under different nitrogen fertilizer applications.The results suggested that PKN treatment tended to decrease plant height and ear height in varying degrees.Leaf senescence was delayed by enhance leaf area and chlorophyll content from grain filling stage to maturing stage.PKN treatment also promoted dry weight transportation from vegeta-tive organs to kernels when no or excessive nitrogen applied.Number of row...

关 键 词：玉米 聚糠萘合剂 植物生长调节剂 化学调控 

分 类 号：S51[农业科学—作物学]