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• 研究报告 • 上一篇    下一篇

UV-B辐射对番茄幼苗品质的影响

侯丽丽1,霍志金2,李炜蔷1,徐坤1**   

  1. (1农业部黄淮地区园艺作物生物学与种质创制重点实验室, 山东农业大学园艺科学与工程学院, 山东泰安 271018; 2山东农业大学农学院, 山东泰安 271018)
  • 出版日期:2015-07-10 发布日期:2015-07-10

Effects of ultraviolet-B radiation on tomato seedling quality.

HOU Li-li1, HUO Zhi-jin2, LI Wei-qiang1, XU Kun1**   

  1. (1Ministry of Agriculture Key Laboratory of Horticultural Crop Biology and Germplasm Creation in HuangHuai Region/College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, Shandong, China; 2Department of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, China)
  • Online:2015-07-10 Published:2015-07-10

摘要:

以不同品种番茄为试材,采用二次饱和-D最优设计,研究了UV-B辐射对番茄幼苗生长的影响,建立了生长量及壮苗指数与UV-B辐射强度和时间之间的数学模型,探讨了UV-B的生物学效应。结果表明:UV-B辐射显著改变了番茄幼苗的生长特性,且不同品种对UV-B辐射的响应较为一致;经模型解析表明,随UV-B辐射强度或时间的增加,番茄幼苗株高降低,而茎粗、根茎叶干物质量及壮苗指数则先升高后降低;辐射强度与时间存在显著的互作效应,UV-B辐射强度对株高的影响大于辐射时间,而对茎粗及壮苗指数的效应则相反;经模拟运算,培育壮苗的适宜UV-B辐射强度为14.5~25.6 μW·cm-2,辐射时间为4.1~5.8 h·d-1。

 
 

关键词: 雨水径流, 融雪径流, 低影响开发(LID), 绿色生态措施, 暴雨洪水管理模型(SWMM), 峰值流量

Abstract:

In this study, using quadratic saturation D-optimal design method, the effects of UV-B radiation on tomato seedling growth characteristics were studied with different varieties. The mathematical models between seedling growth, seedling index, and UV-B radiation intensity and radiation time were established, and the biological effects of UV-B were discussed. The results showed that UV-B radiation significantly affected the growth of tomato seedlings, and the response of different tomato varieties to UV-B radiation was consistent. The tomato plant height was decreased, and the stem diameter, crown and root dry mass and seedling index were firstly increased and then decreased with the increase of UV-B radiation intensity and time. The interactive effect between UV-B radiation intensity and time was significant. UV-B radiation intensity had a greater effect on plant height than radiation time, but it was opposite on stem diameter and seedling index. After simulation calculation, the appropriate intensity and time of UV-B radiation were 14.5-25.6 μW·cm-2 and 4.1-5.8 h·d-1, respectively, for cultivating highquality tomato seedlings.
 

Key words: stormwater runoff, peak flow, low impact development (LID), stormwater management model (SWMM), snowmelt runoff, green ecological measure.