Effect of Cold Plasma Treatment on Seed Germination and Growth of Wheat简

This study investigated the effect of cold helium plasma treatment on seed germina- tion, growth and yield of wheat. The effects of different power of cold plasma on the germination of treated wheat seeds were studied. We found that the treatment of 80 W could significantly improve seed germination potential （6.0%） and germination rate （6.7%） compared to the control group. Field experiments were carried out for wheat seeds treated with 80 W cold plasma. Com- pared with the control, plant height （20.3%）, root length （9.0%） and fresh weight （21.8%） were improved significantly at seedling stage. At booting stage, plant height, root length, fresh weight, stem diameter, leaf area and leaf thickness of the treated plant were respectively increased by 21.8%, 11.0%, 7.0%, 9.0%, 13.0% and 25.5%. At the same time, the chlorophyll content （9.8%）, nitrogen （10.0%） and moisture content （10.0%） were higher than those of the control, indicating that cold plasma treatment could promote the growth of wheat. The yield of treated wheat was 7.55 t-ha-1, 5.89% more than that of the control. Therefore, our results show that cold plasma has important application prospects for increasing wheat yield.     

杭州体育文化产业空间集聚载体的研究——以黄龙文创园为例

本文从文化创意特征和产业空间集聚特征入手,在分析黄龙体育文化创意产业园的定位、产业链、近远期目标、发展模式的基础上,对于建设体育文化产业集聚园的基本要求做了比较深入的探讨,并明确文化创意是黄龙文创园的核心方向,完善园区产业合理布局与规划是黄龙文创园的主导,指出了提高黄龙文创园的空间集聚效应的一些相关的路径选择和对策。     

Effect of cold plasma treatment on seedling growth and nutrient absorption of tomato

The effects of cold plasma (CP) treatment on seed germination,seedling growth,root morphology,and nutrient uptake of a tomato were investigated.The results showed that 80 W of CP treatment significantly increased tomato nitrogen (N) and phosphorus (P) absorption by 12.7％ and 19.1％,respectively.CP treatment significantly improved the germination potential of tomato seed by 11.1％ and the germination rate by 13.8％.Seedling growth characteristics,including total dry weight,root dry weight,root shoot rate,and leaf area,significantly increased after 80 W of CP treatment.Root activity was increased by 15.7％ with 80 W of CP treatment,and 12.6％ with 100 W of CP treatment.CP treatment (80 W) markedly ameliorated tomato root morphology,and root length,surface area,and volume,which increased 21.3％,23.6％,and 29.0％,respectively.Our results suggested that CP treatment improved tomato N and P absorption by promoting the accumulation of shoot and root biomass,increasing the leaf area and root activity,and improving the length,surface area,and volume of root growth.Thus,CP treatment could be used in an ameliorative way to improve tomato nutrient absorption.