| 不同玉米品种氮素营养效率差异的生态生理机制 |
| |
| 引用本文： | 黄高宝,张恩和,胡恒觉. 不同玉米品种氮素营养效率差异的生态生理机制[J]. 植物营养与肥料学报, 2001, 7(3): 293-297. DOI: 10.11674/zwyf.2001.0308 |
| |
| 作者姓名： | 黄高宝 张恩和 胡恒觉 |
| |
| 作者单位： | 1.甘肃农业大学农业生态工程研究所 甘肃兰州730070 |
| |
| 基金项目： | 国家自然科学基金项目(39700088);甘肃省自然科学基金项目(ZS991-A21-030-N)资助. |
| |
| 摘 要： | 采用大田与盆栽试验相结合的方法 ,对 7个氮素营养效率不同的玉米杂交种在不同氮肥水平下的子粒日产量、吸氮效率、根系形态、叶片硝酸还原酶活力 (NRA)及冠层光合生理生态特性等进行了研究。结果表明 ,DK743、DK656、豫玉 2 2、中单 2号、户单 1号等 5个品种N素营养效率较高 ;酒单 2号和石玉 90 5是低N素营养效率的品种。N素营养效率的高低与品种根重、根长、根表面积、叶片NRA、净光合速率、气孔导度等都有一定的相关性。适当供氮能提高净光合速率、气孔导度、叶片NRA含量、干物质积累量和子粒产量 ,提高幅度因品种而异。
|
| 关 键 词： | 玉米 氮素营养效率 生理生态 硝酸还原酶活性(NRA) |
| 文章编号： | 1008-505(2001)03-0293-05 |
| 修稿时间： | 2000-01-10 |
Eco-physiological mechanism on nitrogen use efficiency difference of corn varieties |
| |
| HUANG Gao bao,ZHANG En he,HU Heng jue. Eco-physiological mechanism on nitrogen use efficiency difference of corn varieties[J]. Plant Nutrition and Fertilizer Science, 2001, 7(3): 293-297. DOI: 10.11674/zwyf.2001.0308 |
| |
| Authors: | HUANG Gao bao ZHANG En he HU Heng jue |
| |
| Affiliation: | 1.Gansu Agricultural University;Lanzhou 730070;China |
| |
| Abstract: | By use of field experiments and pot culture experiments, seed yield per day, nitrogen absorption efficiency, root morphology, leaf nitrate reductase (NRA), canopy photosynthesis eco physiological characteristics etc. were studied with 7 different corn varieties The results showed that 5 varieties of DK743, DK656, YY22, ZD2 and HD1 had high nitrogen use efficiency (NUE), but another two varieties of JD2 and SY905 had low NUE NUE were correlated with root dry weight, root length, root surface area, leaf NRA, net photosynthetic rate (Pn), stoma resistance(Sr) etc Pn, Sr, leaf NRA, total dry matter, seed yield were increased by more N applying, and the range of increasing were different among 7 varieties |
| |
| Keywords: | |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《植物营养与肥料学报》浏览原始摘要信息 |
|
点击此处可从《植物营养与肥料学报》下载全文 |
|
