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当前位置: 首页 > 文章 > 大气O_3浓度升高对麦季土壤和植株氮磷钾的影响 生态学杂志 2011 (8) 1637-1641
Position: Home > Articles > Effects of elevated atmospheric O_3 on N,P,and K concentrations in soil and wheat plant during wheat growth season Chinese Journal of Ecology 2011 (8) 1637-1641

大气O_3浓度升高对麦季土壤和植株氮磷钾的影响

作  者：
张咸臣;张海进;尹微琴;王小治;董兵;盛海君;封克;朱建国
单  位：
土壤与农业可持续发展国家重点实验室;江苏省扬州农业环境安全技术服务中心/扬州大学环境科学与工程学院
关键词：
O3浓度升高;有效态N、P、K;土壤;小麦植株
摘  要：
以江都稻/麦轮作系统O3-FACE(ozone-free air concentration enrichment)为试验平台,研究了高浓度O3(比周围大气高50%)对麦季土壤和植株N、P、K含量的影响。结果表明:在小麦整个生长期,高浓度O3处理下,土壤NH4+-N、NO3--N和速效K含量分别降低了5.7%、3.6%和3.0%,土壤速效P含量提高了26.3%(P<0.05)。经高浓度O3处理后,小麦植株在拔节期体内K含量增加了28.4%(P<0.01);成熟期小麦植株各器官内N含量均降低,麦粒中P和K含量分别增加了6.5%和4.2%;指出大气O3浓度升高在整个小麦生长期内会促进小麦植株对N、K的吸收,同时提高小麦籽粒中K、P的含量,但降低了成熟期小麦植株N含量。
译  名：
Effects of elevated atmospheric O_3 on N,P,and K concentrations in soil and wheat plant during wheat growth season
作  者：
ZHANG Xian-chen1,ZHANG Hai-jin1,YIN Wei-qin1,WANG Xiao-zhi1,2**,DONG Bing1,SHENG Hai-jun1,FENG Ke1,ZHU Jian-guo2(1Yangzhou Technical Service Center for Agro-Environment Safety of Jiangsu Province/College of Environmental Science and Engineering,Yangzhou University,Yangzhou 225127,China;2State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China)
关键词：
elevated O3;available N,P,and K;soil;wheat plant
摘  要：
Taking the rice/wheat ozone free-air concentration enrichment(O3-FACE) system in Jiangdu County of Jiangsu Province as a platform,this paper studied the effects of elevated atmospheric O3(target at 50% above ambient) on the N,P,and K concentrations in soil and wheat plant during wheat growth season.In the whole growth season of wheat,the concentrations of soil NH4+-N,NO3--N,and available K under elevated O3 decreased by 5.7%,3.6% and 3.0%,respectively,while the soil available P concentration increased by 26.3%(P<0.05),compared with those under ambient O3.Under elevated O3,the K concentration in wheat plant at jointing stage increased by 28.4%(P<0.01),the plant N concentration at maturing stage decreased,while the P and K concentrations in wheat grain increased by 6.5% and 4.2%,respectively.Our results suggested that elevated atmospheric O3 could promote the N and K uptake by wheat plant in its whole growth period,increase the K and P concentrations in wheat grain,but decrease the N concentration in wheat plant at maturing stage.

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