关键词: 油菜, 油菜, 需水量, 氮磷钾, 水肥一体化

Abstract: To study the fiber quality of cotton variety examined and approved by Hebei Province and provide guidance for future cotton varietal improvement, the fiber quality of 44 cotton varieties examined and approved by Hebei Province during 2009-2013 were researched. By comparing with the cotton varieties examined and approved during 2004- 2008, the upper half mean length were basically flat, the fiber strength and the micronaire are higher. By comparing with the cotton varieties bred by the nation and the other provinces, the upper half mean length and fiber strength of the varieties bred by Hebei Province are lower, the micronaire was higher and the ntegrated cotton fiber quality was poor. The effect about genetic improvement of fiber quality was not obvious in recent five years.