摘要
2011年3～10月在陕西户县蒋村的猕猴桃种植园,对其猕猴桃植株作了施用浓度分别为0.15 mg.kg-1、0.3 mg.kg-1、0.5 mg.kg-1的Na2SeO3溶液的试验,以研究硒对猕猴桃植株叶片光合生理及果实品质的影响。结果表明,施硒增强了猕猴桃植株叶净光合速率、蒸腾速率和气孔导度,但降低了叶片水分的利用率。在猕猴桃植株的生长后期,其叶片的各光合指标变化呈现下降趋势。在果实采收期,一定的施硒浓度范围,提高了猕猴桃植株的单果鲜重、可溶性糖含量、可溶性固形物含量以及Vc含量,而果实中的硒含量却随着施硒浓度的增大而升高。研究得出:适宜的施硒浓度(≤0.5 mg.kg-1)可以增强猕猴桃植株叶片的光合作用,改善猕猴桃果实的品质。
Experiments of selenium application on Actinidia chinensis were conducted in Actinidia chinensis cultivation orchard located at Jiangcun of Hu county of Shaanxi province to study the effects of selenium on photosynthesis and fruit quality.Three concentrations of Na_2SeO_3 solution were used,0.15 mg·kg-1,0.3 mg·kg-1 and 0.5 mg·kg-1.The results indicated that selenium application increased the net photosynthetic rate,transpiration rate and stomatal conductance,whereas decreased the water use efficiency.At the later stage,the photosynthetic indexes showed the trend of declination.In the fruit collection period,appropriate selenium concentration increase the fresh weight of single fruit,the content of soluble sugar,the content of soluble solid matter and the content of vitamin C.The content of selenium in fruit increased with the application amount of selenium.It was concluded that ≤0.5 mg·kg-1 was the proper concentration.
出处
《西部林业科学》
CAS
北大核心
2012年第2期38-42,共5页
Journal of West China Forestry Science
基金
中央电大(重点-Z)项目(G10HQ3806Z)
关键词
硒
猕猴桃
叶片光合生理
果实品质
selenium
Actinidia chinensis
photosynthesis
fruit quality
