利用阿克达拉基准辐射观测站紫外辐射UV-A和UV-B数据，分析阿克达拉到达地面的UV和UV-B的特征以及不同云量和降水过程的变化特征。结果表明：阿克达拉全年紫外辐射年总量为321.04 MJ·m-2，年均日曝辐量为0.88 MJ·m-2,UV-B年曝辐量为5.26 MJ·m-2,UV年平均值占总辐射年平均值的5.56%。UV和UV-B的辐射强度的季节变化表现为夏季>春季>秋季>冬季。夏季UV曝辐量是冬季的2.79倍；UV-B夏季平均日曝辐量是冬季的8.10倍。积雪期与非积雪期UV占总辐射比值不同，分别为6.44%和5.81%；且地面积雪的反射导致UV增加25.89%。

利用阿克达拉基准辐射观测站紫外辐射UV-A和UV-B数据，分析阿克达拉到达地面的UV和UV-B的特征以及不同云量和降水过程的变化特征。结果表明：阿克达拉全年紫外辐射年总量为321.04 MJ·m-2，年均日曝辐量为0.88 MJ·m-2,UV-B年曝辐量为5.26 MJ·m-2,UV年平均值占总辐射年平均值的5.56%。UV和UV-B的辐射强度的季节变化表现为夏季>春季>秋季>冬季。夏季UV曝辐量是冬季的2.79倍；UV-B夏季平均日曝辐量是冬季的8.10倍。积雪期与非积雪期UV占总辐射比值不同，分别为6.44%和5.81%；且地面积雪的反射导致UV增加25.89%。

Soil salinization poses a serious threat to sustainable ecological agricultural development. Most crops are susceptible to salt stress during the growth phase of seed germination and seedling emergence. Seed priming could activate the pre-germination metabolic processes, thereby improving seed germination and seedling growth under abiotic stress conditions. Moreover, multi-walled carbon nanotube (MWCNT), as an important class of carbon nanotubes, has been applied to promote plant growth by enhancing antioxidant defense systems and photosynthetic performance during the seedling stage. In this way, it is worth exploring the combination of pre-germination and post-germination treatments to reduce the damage of salt stress to crops. Therefore, in this study, rice seeds were firstly exposed to UV-B tube in a UV irradiation box for priming treatment (90 min). After emergence, the seedlings were transplanted into pots containing 150 mg L-1 MWCNT and 200 mM NaCl to evaluate the positive effects of nanomaterial on the growth of rice. The results demonstrated that after 28 days of salt stress exposure, the combination of UV-B priming and MWCNT significantly improved the growth performance of rice and minimized the adverse effects of salt stress, as compared with the single UV-B priming or MWCNT treatment, increasing biomass accumulation and the contents of osmoregulation substances, modulating antioxidant enzyme system, improving photosynthetic performance. This study suggested that the integration of seed priming with UV-B and soil application of MWCNT enhanced antioxidant capacity, which might increase photosynthesis and biomass accumulation, thereby improving the salt tolerance of rice.