欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2004, Vol. 20 ›› Issue (3): 80-80.

所属专题： 玉米； 小麦； 烟草种植与生产

• 目次 • 上一篇    下一篇

UV-B增加对小麦及玉米物候发育影响的初步研究

王传海,闵锦忠,严培君,徐星生,郑有飞   

  • 出版日期:2004-06-05 发布日期:2004-06-05

A Primary Study on the Effect of Enhanced UV-B Radiation to the Phenology of Wheat and Maize

Wang Chuanhai，Ming Jingzhong，Yan Peijun，Xu Xingsheng，Gao Guizhi，Zheng Youfei   

  • Online:2004-06-05 Published:2004-06-05

PDF (PC)

611

摘要： 观察了UV-B增加对小麦及玉米物候发育的影响，结果表明：UV-B增加对小麦及玉米物候期具有明显的推迟效应，且这种推迟效应可能与UV-B增加影响作物的营养供给无关；UV-B增加对小麦群体内小气候有显著影响，表现为气温和土温显著升高，UV-B增加对小麦物候期的推迟效应与UV-B增加条件下作物群体内小气候的变化无关；初步探讨了紫外线UV-B增加对作物物候影响的机制，并提出有待于进一步研究的问题。

Abstract: Effects of enhanced UV-B radiation on the phenology of wheat and maize were investigated. Results show that at the grown stage, the phenology of wheat and maize were postponed significantly by enhanced UV-B radiation. The experiment also shows that the germination of wheat and maize were also postponed significantly by enhanced UV-B radiation, which indicated that the effect of enhanced UV-B radiation to the phenology of wheat and maize were not attributed to the nutrition available. The microclimate of crop was also influenced by enhanced UV-B radiation, showing that the temperature of canopy and soil raised significantly. Indicated that the effect of enhanced UV-B radiation to the phenology of wheat and maize were not attributed to the change of microclimate in response to enhanced UV-B radiation. The possible mechanism of the change of crop phenology in response to enhanced UV-B is discussed, and the problem be supposed to be investigated further is also put forwarded in the paper.