不同氮肥追施量对紫丁香幼苗生理特性的影响

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英文篇名：Effects of Different Nitrogen Fertilizer Application Rates on Physiological Characteristics of Syringa oblata Lindl. Seedlings 作者：李红霞 英文作者：LI Hongxia;Shanxi Poplar High Yield Forest Experimental Bureau Jinshatan Forest Farm; 关键词：氮肥 ; 紫丁香 ; 生理特性 英文关键词：nitrogen fertilizer;;Syringa oblata Lindl.;;physiological characteristics 中文刊名：吉林林业科技 英文刊名：Journal of Jilin Forestry Science and Technology 机构：山西省杨树丰产林实验局金沙滩林场; 出版日期：2019-09-15 出版单位：吉林林业科技 年：2019 期：05 语种：中文; 页：5-8+14 页数：5 CN：22-1106/S ISSN：1005-7129 分类号：S685.26

摘要

在田间条件下,设置不同氮肥施用量的4个(T1、T2、T3、T4)处理,3次重复试验,测定不同处理叶片的叶绿素含量、POD活性、SOD活性和电导率,结果表明:叶绿素含量随氮肥施用量的增加而升高,7—9月T3分别比T2提高了15.48%、18.55%、13.35%,差异显著,T4与T3之间无显著差异;SOD活性T3分别比T2提高了10.53%、11.22%、13.66%,差异显著,5—6月T2与T3之间无显著差异;POD活性6月、9月T3分别比T2提高了6.41%、6.63%,差异显著,5月、7月、8月无显著差异;T3电导率在5—9月分别比T2降低了16.92%、18.96%、11.45%、15.15%、17.64%,差异显著,T2与T1之间存在显著差异。综合分析认为,T3对改善紫丁香生理特性效果最佳,育苗中建议氮肥施用量为每株16.5 g。
        The experiment was conducted under field conditions, and then set 4 treatment(T1、T2、T3、T4), repeated 3 times, chlorophyll content, POD activity, SOD activity and electrical conductivity of leaves were determined,the results showed that: The chlorophyll content increased with the increase of nitrogen fertilizer application, T3 was higher than T2 by 15.48 %, 18.55 %,13.35 % and it was have significant difference when it was from July to September, there was no significant difference between T4 and T3; T3 SOD activity was higher than T2 by 10.53 %,11.22 %, 13.66 % and it was have significant difference, there was no significant difference between T2 and T3 when it was from May to June; T3 POD activity was higher than T2 by 6.41 %, 6.63 % and it was have significant difference when in June and September, there was no significant difference when in May, July and August; T3 conductivity is lower than T2 by 16.92 %,18.96 %, 11.45 %,15.15 %,17.64 %,and there were significant differences when in May to September, there were significant differences between T2 and T1. According to the comprehensive analysis, T3 had the best effect on improving the physiological characteristics of Syringa oblata Lindl., and that suggested application rate of nitrogen fertilizer was 16.5 g per plant when in seedling raising.

引文

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