华北农学报2012，Vol.27Issue(6)：185-190,6.
氮肥与精量秸秆还田对冬小麦花后光合特性及产量的影响
Effects of Coupling of Precise Straw-return and Nitrogen Fertilizer on Photosynthetic Characteristics after Anthesis and Yield of Winter Wheat
摘要
Abstract
In order to determine the wheat straw residue amount and the nitrogen fertilizer amount in the dry land, different amounts of straws returned to field and nitrogen treatments were set up in Qingdao agriculture university Jiaozhou experiment stations. We researched the effects of precise straw returned quantity and nitrogen fertilizer treatments on winter wheat photosynthetic characteristics and yield. The results showed that compared with only nitrogen fertilizer treatment,right amounts of straws returned to field can improve winter wheat chlorophyll SPAD value obviously, delay senescence of flag leaf, improve the photosynthetic performance of flag leaf and increase the 1000-seed weight. In the same level of the straw returned to N2 level of the flag leaf senescence winter wheat slowly, and photosynthesis prolonged, the yield was increased significantly. Straw returned 9 000 kg/ha ( J3 ) under 225 kg/ha ( N2) nitrogen can delay senescence of flag leaf .improve the photosynthetic performance of flag leaf, reduce stoma-tal conductance and increase the 1000-seed weight obviously compared with other process, however, wheat straw reduced the wheat effective panicles. The experimental results showed that straw returned 9 000 kg/ha under 225 kg/ha nitrogen dosage had the most obvious effect on improving photosynthesis of flag leaves. So the N2J3 treatment is the optimal choice in the locality.关键词
氮肥/秸秆还田/光合特性/产量Key words
Nitrogen fertilizer/Straw-return/Photosynthetic Characteristics/ Yield分类
农业科技引用本文复制引用
王宁,刘义国,张洪生,李玲燕,林琪..氮肥与精量秸秆还田对冬小麦花后光合特性及产量的影响[J].华北农学报,2012,27(6):185-190,6.基金项目
国家粮食丰产科技工程项目(2011BAD16B09-03) （2011BAD16B09-03）
公益性行业科研专项(200903007) （200903007）
"作物栽培学与育种学"泰山学者岗位经费 （）
