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增施CO2对设施马铃薯生长及氮素积累的影响

DOI: 10.7668/hbnxb.2011.04.030, PP. 174-177

Keywords: CO2,硝酸盐,氮素积累量,马铃薯

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Abstract:

选用马铃薯(SolanumtuberosumL.)为试材,研究增施CO2能否降低马铃薯块茎中硝酸盐含量并缓减土壤次生盐碱化,为提供安全的马铃薯产品同时延长温室土壤的可持续利用。试验采用传统氮素施肥和温室CO2气体施肥结合的方法,研究了增施CO2条件下氮素水平对马铃薯生长、氮素积累量、硝酸盐含量的影响。结果表明:增施CO2,施氮量是48,96kg/hm2在播种后第130天马铃薯全株干物质质量和氮素积累量、全株硝酸盐含量均高于不增施CO2处理;施氮量是96,144kg/hm2时块茎生物量、硝酸盐含量和氮素积累量显著降低。

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