欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志

• 研究报告 • 上一篇    下一篇

新疆杂交榛良种光合作用对生态因子的响应

宋锋惠1, 2,罗青红2,史彦江2**,俞涛2,寇云玲1,2   

  1. 1新疆农业大学林学与园艺学院, 乌鲁木齐 830053; 2新疆林科院造林治沙研究所, 乌鲁木齐 830063)
  • 出版日期:2013-05-10 发布日期:2013-05-10

Photosynthetic responses of hybrid hazel fine breeds to ecological factors in Xinjiang, Northwest China.

SONG Feng-hui1,2, LUO Qing-hong2, SHI Yan-jiang2**, YU Tao2, KOU Yun-ling1,2   

  1. (1Forestry and Horticulture Institute, Xinjiang Agricultural University, Urumqi 830053, China; 2Afforestation and Desertification Control Research Institute, Xinjiang Forestry Academy, Urumqi 830063, China)
  • Online:2013-05-10 Published:2013-05-10

摘要:

在夏季田间条件下,研究了4种新疆平欧杂交榛的光合特性。结果表明:4个品种的光饱和点(LSP)、光补偿点(LCP)、CO2饱和点(CSP)、CO2补偿点(CCP)分别位于1195.27~1620.63 μmol·m-2·s-1、34.03~87.80 μmol·m-2·s-1、1188.50~1617.05 μmol·mol-1和64.88~99.15 μmol·mol-1;新榛1号和新榛4号表现出低光合低蒸腾的特点,新榛2号具有较低的LCP和较高的LSP,表现出对光能利用范围较大、光合潜力高的特点,新榛3号的LCP和LSP均较大,同时具有低的CCP和高的CSP及表观羧化效率(CE),其最大净光合速率(Pmax)(31.55 μmol·m-2·s-1)明显高于其他品种(24.63~25.45 μmol·m-2·s-1);此外,与常温(25 ℃)相比,新榛1号的净光合速率(Pn)受40 ℃高温的影响较其他品种显著,新榛3号的气孔导度(Gs)比其他品种受影响的程度轻。
 

关键词: 化肥, 秸秆还田, 有机无机复混肥, 杂草, 小麦田

Abstract: This paper studied the photosynthetic characteristics of four hybrid hazel fine breeds (Nos. 1-4) in Xinjiang under field conditions in summer. The light saturation point (LSP) of Nos. 1-4 varied from 1195.27 to 1620.63 μmol·m-2·s-1, light compensation point (LCP) varied from 34.03 to 87.80 μmol·m-2·s-1, CO2 saturation point (CSP) varied from 1188.50 to 1617.05 μmol·mol-1, and CO2 compensation point (CCP) varied from 65.88 to 99.15 μmol·mol-1. The No. 1 and No. 4 showed the characteristics of low photosynthetic rate (Pn) and low transpiration (Tr), the No. 2 showed lower LCP and higher LSP, indicating a wider scope of light energy utilization and higher photosynthetic potential, while the No. 3 possessed the highest LCP and LSP, higher CSP and CE, but lower CCP, showing the higher photosynthetic capacity (Pmax, 31.55 μmol·m-2·s-1) than the others (24.63-25.45 μmol·m-2·s-1). As compared with that at normal temperature (25 ℃), the Pn of the No. 1 was more affected by high temperature (40 ℃), while the Gs of the No. 3 was lesser affected than that of the others.

Key words: chemical fertilizer, straw returning, organic and inorganic fertilizer, weed, wheat field.