CO2浓度对番茄幼苗生长及养分吸收的影响

被引：14

作者：

于承艳

都韶婷

邢承华

林咸永

章永松

机构：

[1] 浙江大学环境资源学院教育部环境修复与生态健康重点实验室

来源：

浙江大学学报(农业与生命科学版) | 2006年 / 03期

基金：

浙江省自然科学基金;

关键词：

番茄; CO2; 硝酸盐; 根系生长; 养分吸收;

D O I：

暂无

中图分类号：

S641.2 [番茄（西红柿）];

学科分类号：

090202 ;

摘要：

采用水培方法研究了CO2浓度对番茄幼苗生长及养分吸收的影响.结果表明:随着CO2浓度升高,番茄干物质积累量显著增加,根/冠比增大,说明促进根系生长的作用比促进地上部生长更为明显;发达的根系大幅增加了氮、磷、钾的总吸收量,但对体内氮、磷、钾含量的影响表现不一,对氮含量影响不大,钾含量反而有所降低,高浓度CO2处理明显增加磷含量.增施CO2极显著地降低番茄体内尤其是叶片中的硝酸盐含量.因此,增施CO2不但可大幅增加作物产量,还可显著改善农产品品质.

引用

页码：307 / 312

页数：6

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