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应用生态学报 ›› 2002, Vol. ›› Issue (10): 1210-1214.

• 研究论文 • 上一篇    下一篇

开放式空气CO2浓度增高对水稻产量形成的影响

黄建晔1, 杨洪建1, 董桂春1, 王余龙1, 朱建国2, 杨连新1, 单玉华1   

  1. 1. 扬州大学农业部作物栽培生理重点实验室, 扬州, 225009;
    2. 中国科学院南京土壤研究所, 南京, 210008
  • 收稿日期:2002-06-12 修回日期:2002-08-03 出版日期:2002-10-15
  • 通讯作者: 王余龙
  • 基金资助:
    中国科学院知识创新重要方向项目(KZCX2408);国家自然科学基金重大国际合作研究资助项目(40120140817).

HUANG Jianye1, YANG Hongjian1, DONG Guichun1, WANG Yulong1, ZHU Jianguo2, YANG Lianxian1, SHAN Yuhua 1   

  1. 1. Key Laboratory of Crop Cultivation and Physiology, Ministry of Agriculture, Yangzhou University, Yangzhou 225009;
    2. Institute of Soil Science, Chinese Academy of Science, Nanjing 210008
  • Received:2002-06-12 Revised:2002-08-03 Online:2002-10-15

摘要: 在大田栽培条件下,研究开放式空气CO2浓度增加(FACE)200μmol·mol-1的处理对水稻产量及产量构成因素的影响.结果表明,FACE处理对水稻株高和主茎叶片数没有明显影响,但使水稻生育进程加快,全生育期显著缩短,增加施N量可减缓FACE处理对水稻全生育期缩短的程度;FACE处理能显著增加分蘖数,极显著增加穗数,提高结实率,但使每穗颖花数显著减少;FACE处理能显著提高水稻产量,在高N条件下增产幅度更大;提高FACE处理的每穗颖花数和单位面积颖花数能极显著提高水稻产量,增加施N量是提高FACE处理每穗颖花数和单位面积颖花数的重要措施.

Abstract: Effect of Free-Air CO2 enrichment (FACE,200μmol·mol-1 higher than CK) on rice yield and its components under field condition were studied with a Japonica variety 99-15. Results showed that FACEtreatment had no obvious effect on plant height and number of leaves on main stem, but could quicken growth process of rice, shorten the whole growth duration. Increment of nitrogen application rate could weaken the effect of FACEon whole growth duration. The number of tillers and panicles, and fulfilled-grain percentage increased significantly under FACEtreatment, whereas spikelets per panicle decreased.FACEtreatment could significantly increase grain yield of rice, especially when higher rate of nitrogen fertilizer was applied.Increasing spikelets per panicle and spikelets per unit area under FACEtreatment would result in marked increment of rice yield. Increasing nitrogen application rate was an important approach to increase spikelets per panicle and spikelets per unit area under FACEtreatment.

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