摘要
进行了 2个优质小麦不同追肥量和追肥时期的比较试验 ,研究了氮肥运筹对小麦光合速率及产量的影响。结果表明 :拔节期施肥可明显促进开花期的光合速率。烟农 15拔节期施中肥和高肥可保持整个生育期的光合速率处于较高的水平 ;93 5 0 3 1中肥量的 2个处理 (9z1,9z2 )光合速率处于较高的水平。烟农 15拔节期施肥可明显提高单位穗数 ;施肥量对穗粒数影响较大 ,以中肥最好 ;施肥量和追肥时期对千粒重影响不大。 93 5 0 3 1拔节期施肥可明显提高单位穗数和千粒重 ;中肥量有利于提高单位穗数。Yg1、Yz1、9z1、9z2 4个处理光合速率高且平稳 。
Effects of nitrogen fertilizer application on photosynthesis rate and yield of wheat were investigated in the experiments including photosynthesis of flag leaf and yield. For yangnong?15, the nitrogen application in jointing stage increased the number of ear per hm 2, the number of grain per ear and enhanced the photosynthesis of flag leaf.For 935031, the nitrogen application at anthesis added the werght of grain significantly and prolonged the period of photosynthesis function.
出处
《安徽农业科学》
CAS
2003年第1期135-136,共2页
Journal of Anhui Agricultural Sciences
关键词
氮肥运筹
优质小麦
光合速率
产量
Winter wheat,Nitrogen fertilizer,Photosynthesis rate,Yield
