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| 钾、尿素与有机物料或双氰胺配施对菠菜体内硝酸盐、亚硝酸盐含量影响的研究 | |
| 引用本文： | 熊国华,林咸永,章永松,郑绍建,王峰. 钾、尿素与有机物料或双氰胺配施对菠菜体内硝酸盐、亚硝酸盐含量影响的研究[J]. 土壤通报, 2005, 36(1): 62-67 |
| 作者姓名： | 熊国华 林咸永 章永松 郑绍建 王峰 |
| 作者单位： | 1. 上海市青浦区环保局,上海,201700;浙江大学,农业化学研究所,浙江,杭州,310029 2. 浙江大学,农业化学研究所,浙江,杭州,310029 3. 上海市青浦区环保局,上海,201700 |
| 基金项目： | 国家自然科学基金(30370840)、国家重点基础研究发展计划(2002CB410806)、钾磷研究所和加拿大钾磷研究所(PPI/PPIC)资助项目和杭州市环境局资助项目 |
| 摘 要： | 采用盆栽试验探讨了钾、尿素与有机物料或双氰胺配施对菠菜体内硝酸盐、亚硝酸盐累积量及与其相关的硝酸还原酶(NR)活性的影响。结果表明,菠菜体内硝酸盐含量的顺序为:尿素>尿素+鸭粪>尿素+猪粪>尿素+双氰胺; 亚硝酸含量顺序为:尿素>尿素与鸭粪配施>尿素与双氰胺配施>尿素与猪粪配施。有机物料的加入均可明显地增加植株体内NR的活性,在菠菜体内NR活性以:尿素+鸭粪>尿素+猪粪>尿素+双氰胺>尿素处理。在相同的氮肥处理条件下,配施适量的钾肥也能显著地降低菠菜体内硝酸盐、亚硝酸盐的累积和增加NR的活性。随着追肥时间的延长,菠菜体内的硝酸盐、亚硝酸盐含量也随之降低,特别是NR的活性在追肥后的第12天到18天之间有显著的降低过程。 |
| 关 键 词： | 尿素 钾肥 有机物料 硝酸盐 亚硝酸盐 硝酸还原酶 |
| 文章编号： | 0564-3945(2005)01-0062-06 |
| 修稿时间： | 2003-11-24 |
Effect of combined Application of potassium and Urea with DCD or Different Organic Materials on Nitrate and Nitrite Accumulation in Spinach |
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| XIONG Guo - hua,LIN Xian - yong,ZHANG Yong - song,ZHENG Shao - jian,WANG Feng. Effect of combined Application of potassium and Urea with DCD or Different Organic Materials on Nitrate and Nitrite Accumulation in Spinach[J]. Chinese Journal of Soil Science, 2005, 36(1): 62-67 | |
| Authors: | XIONG Guo - hua LIN Xian - yong ZHANG Yong - song ZHENG Shao - jian WANG Feng |
| Abstract: | A pot experiment was carried out to explore the effect of combined application of potass and urea with DCD or different organic materials on nitrate and nitrite accumulation in spinach and the relationship between nitrate content and the activity of nitrate reductase (NR). The results showed that the order of amount of nitrate in spinach was: U > U DM > U PM > U DCD; and the order of nitrite content in spinach was: U>U DM>U DCD > U PM. Optimally combined application of urea with organic materials improved the NR activity . The order of NR activity was: U DM > U PM > U DCD > U. Suitable potassium improved NR activity and decreased the nitrate and nitrite accumulation in spinach significantly. Especially there were significant decrease in NR activity from 12 days to 18 days after application of fertilizers. |
| Keywords: | Urea Potassium Organic materials Nitrate Nitrite Nitrate reductase |
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