摘要
在盆栽条件下,以有代表性的2个粳稻品种为试材,采用盆栽方法,研究UV-B辐射对2个粳稻品种生长发育及其产量的影响。试验设3个处理,分别为自然光、紫外辐射增强5%和10%。试验结果表明,UV-B辐射强度增加明显滞后水稻的生育期,使株高变矮,分蘖数减少,叶面积和干物重下降,最终导致产量降低。并且UV-B辐射强度增加后穗粒数和穗数的下降是水稻产量降低的主要原因。总体来说,UV-B辐射增加越多对水稻的影响越大,但其抑制程度依品种,水稻所处的生长阶段的不同而不同。
Two varieties of typical Japonica-type were enhanced UV-B radiation on growth production of rice diation slowed down the maize development, decreased duction, and enhanced ultraviolet-B radiation caused reason that decreased production. Generally speaking, grown investigated, in order to study the effect of .The results showed that enhanced uhraviolet-B ra- rice height, tiller number, total leaf area and prodecreased grain number and available spike is the the level of enhanced UV-B radiation is the most factor, the more enhanced UV-B radiation the worse effect to rice. But the inhibitory rate varied in different cuhivars and developmental stages.
出处
《中国农学通报》
CSCD
2006年第4期411-414,共4页
Chinese Agricultural Science Bulletin
关键词
UV-B辐射增加
水稻
生长发育
产量
Enhanced UV-B radiation, Rice, Growth and development, Production
