| UV-B辐射增加对水稻生长发育及产量的影响 |
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| 作者姓名： | 许 莹 殷 红 毛晓燕 |
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| 作者单位： | 沈阳农业大学 辽宁沈阳110161 |
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| 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。
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| 关 键 词： | UV-B辐射增加 水稻 生长发育 产量 |
Studies on the Effects of Enhanced UV-B Radiation on Growth and Production of Rice |
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| Authors: | Xu Ying Yin Hong MaoXiaoYan |
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| Institution: | Shenyang Agriculture University, Shenyang 110161 |
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| Abstract: | Two varieties of typical Japonica-type were grown investigated, in order to study the effect of enhanced UV-B radiation on growth production of rice .The results showed that enhanced ultraviolet-B radiation slowed down the maize development, decreased rice height, tiller number, total leaf area and production, and enhanced ultraviolet-B radiation caused decreased grain number and available spike is the reason that decreased production. Generally speaking, 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 cultivars and developmental stages. |
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| Keywords: | Enhanced UV-B radiation Rice Growth and development Production |
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