Effects of nitrogen fertilizer on physiological property and yield of wheat at the different soil mo

• 作 者: 张景略 郑英
• 出 处: 华北农学报
• 发表日期: 1993年S2期
• 关键词: moisture wheat physiological fertilizer drought chlorophyll photosynthesis stron

The results of pot and pond trials are as follows.On equal amount of nitrogen(N)applied,the wheat nitrate reduction activity(NRA)and photosynthesis strength and other phy-siological properties are stronger and yields are higher at normal soil moisture than those atdrought.At the same soil moisture,in a certain range of N applied,these properties of wheat in-crease with the increasing of N applied,but they descend when the amount of N applied exceedsa certain range.

The results of pot and pond trials are as follows. An equal amount of nitrogen (N) applied, the wheat nitrate reduction activity (NRA) and photosynthesis strength and other phy-siological properties are stronger and yields are higher at normal soil moisture than those atdrought.At the same soil moisture, in a certain range of N applied, these properties of wheat in-crease with the increasing of N applied, but they descend when the amount of N applied exceeds certain range.