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以中黄35、华严0926和华严1号为材料,研究了硅(Si)和紫外(UV-B)辐射增强(5.4 k J·m-2·d-1)对大豆幼苗生长的影响以及Si对UV-B辐射增强的缓解效应。结果表明:UV-B辐射增强对中黄35叶绿素含量和生物量的抑制作用较明显,但对叶面积、节间长度和株高的影响较小,而华严0926和华严1号对UV-B辐射增强的响应与中黄35相比有着明显的不同;Si在一定程度上缓解了UV-B辐射对大豆生物量和植株形态等方面的影响。由此判断,选择合适的品种和使用硅肥对大豆抗UV-B辐射栽培具有重要意义。
The effects of silicon (Si) and enhanced UV-B radiation (5.4 kJ · m-2 · d-1) on the growth of soybean seedlings were investigated using Zhonghuan 35, Hua-Yan 0926 and Hua-Yan 1 And the mitigating effect of Si on enhanced UV-B radiation. The results showed that the enhanced UV-B radiation had obvious effects on the chlorophyll content and biomass of medium yellow 35, but had less effect on leaf area, internode length and plant height. However, the effects of UV-B radiation on UV The response to radiation enhancement was significantly different from that of medium yellow 35; Si to some extent alleviated the effects of UV-B radiation on soybean biomass and plant morphology. Judging from this, the selection of suitable varieties and the use of silicon fertilizers are of great importance for the cultivation of soybean against UV-B radiation.