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应用生态学报 ›› 2005, Vol. 16 ›› Issue (2): 273-278.

• 研究论文 • 上一篇    下一篇

不同生态稻区覆膜旱作稻氮营养生理及抗逆生理特性探讨

路兴花1, 吴良欢1, 郑寨生2, 孔向军2, 张福锁3   

  1. 1. 浙江大学环境与资源学院环境修复与生态健康教育部重点实验室, 杭州, 310029;
    2. 浙江省金华市农业科学研究所, 金华, 321000;
    3. 中国农业大学资源与环境学院, 北京, 100094
  • 收稿日期:2003-12-11 修回日期:2004-10-18 出版日期:2005-02-15 发布日期:2005-02-15
  • 通讯作者: 吴良欢
  • 基金资助:
    国家农业部"948"项目(2003-Z53)、国家自然科学基金项目(39970146)和浙江省科技厅重点资助项目(011102187).

Physiological characteristics of nitrogen nutrition and stress-resistance of film-mulched rice in various ecological regions of Zhejiang Province

LU Xinghua1, WU Lianghuan1, ZHENG Zhaisheng2, KONG Xiangjun2, ZHANG Fusuo 3   

  1. 1. College of Environment and Resource Sciences, Zhejiang University, Hangzhou 310029, China;
    2. Jinhua Municipal Institute of Agricultural Science, Zhejiang Province, Jinhua 321000, China;
    3. China Agricultural University, Beijing 100094, China
  • Received:2003-12-11 Revised:2004-10-18 Online:2005-02-15 Published:2005-02-15

摘要: 不同生态稻区生态环境和栽培管理方式不同,覆膜旱作稻氮营养生理和抗逆生理与常规水作稻有些异同,尤其是体内NO3--N和NH4+-N含量及分布差异很大.杭嘉湖平原区覆膜旱作稻生长前期受干热天气影响,其分蘖期、拔节期、孕穗期体内NO3--N含量较水作稻有不同程度的降低,而NH4+-N含量则极显著提高;金衢盆地覆膜旱作稻孕穗期体内NO3--N含量比常规水作稻高,根部NH4+-N含量则显著降低,茎基部和叶片NH4+-N含量有一定增加.正常气候条件下两生态稻区覆膜旱作稻孕穗期叶片硝酸还原酶(NR)活性和谷氨酰胺合成酶(GS)活性较水作稻均有不同程度的提高;丙二醛(MDA)、可溶性糖及脯氨酸(Pro)含量与水作稻相差不大,表明不同生态稻区的覆膜旱作稻可以通过不同的栽培管理模式,促进生长发育,达到高产目的.

关键词: 覆膜旱作, 氮营养生理, 抗逆生理, 水稻

Abstract: The study showed that different ecological environment and cultivation system in various ecological regions of Zhejiang Province resulted in some different physiological characteristics of nitrogen nutrition and stress-resistance,especially in the aspect of NO3--N and NH4+-N concentrations,between film-mulched and conventional flooded rice.Owing to the heat stress in Hangjiahu plain,the NO3--N concentration of film-mulched rice decreased to some extent,but NH4+-N concentration increased markedly at tillering,jointing and booting stages,compared to conventional flooded rice.In Jinqu basin,the NO3--N concentration of film-mulched rice at booting stage was higher,while the NH4+-N concentration in its roots was notably lower than those of conventional flooded rice,with NH4+-N concentration in its basal stems and leaves somewhat increased.Generally,the glutamine synthetase(GS) and nitrate reductase (NR) activities in film-mulched rice leaves were enhanced at booting stage,while malondiadehyde (MDA),soluble sugar (SS) and proline(Pro) concentrations had little changes.In conclusion,film-mulched cultivation was beneficial to the rice growth and its high yielding.

Key words: Film-mulched cultivation, Nitrogen nutrition physiology, Stress-resistance physiology, Rice

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