氮对玉米碳氮代谢与粒重形成的影响  

Effect of Nitrogen on Metabolism of Carbon and Nitrogen and Grain Weight Formation in Maize

作　　者：董炳友[1] 王丽君 崔丽雅[1] 田秀平[1] 杨克军[1] 向春阳[1] 

机构地区：[1]黑龙江八一农垦大学植物科技学院,密山158308 [2]黑龙江省鸡西市农业广播电视学校

出　　处：《黑龙江八一农垦大学学报》2003年第2期12-15,共4页journal of heilongjiang bayi agricultural university

基　　金：黑龙江省自然科学基金资助项目(C0230)。

摘　　要：田间试验研究不同氮用量下2个玉米杂交种后期碳氮代谢与粒重形成的关系。结果表明,适宜的氮营养,可使玉米的收获指数与氮收获指数增加。适宜的氮用量有利于玉米营养体碳氮向籽粒运输。玉米杂交种龙单13和克单8的粒重形成所需氮素40.10%～59.88%来源于营养体的氮素再转移,40.12%～59.90%由后期根系供应。Study on grain weight formation in post growing period, the metabolism of carbon(C) and nitrogen(N) as influenced by N with two maize hybrids were carried out by field experiment. The results showed that harvest index and harvest index of N increased obviously with appropriate N, which accelerated C and N translocation from vegetative parts to grain. For Longdan 13 and Kedan 8, 40.10%~59.88% N that were used to form grain weight come from the N retransfer in vegetative parts, 40.12%~59.90% N were supplied by roots at later stage of growth.

关 键 词：玉米 氮营养 碳氮代谢 粒重形成 

分 类 号：S311[农业科学—作物栽培与耕作技术]