氮素水平对菠菜氮、钾累积与分配及硝酸盐形成的影响

摘要/Abstract

摘要： 研究了不同供氮水平对菠菜硝态氮硝态氮累积与氮、钾吸收的影响。结果表明：随着供氮水平的提高，菠菜各器官的生物量增加，但分配到根中的比例逐渐降低，而茎叶比例逐渐增加。菠菜各器官的硝态氮累积量随氮水平的提高而增加，且茎叶的硝态氮累积量大于根。随供氮水平的提高菠菜茎叶中全N累积量显著提高，而在N2、N3、N4处理下根的全氮累积量无显著变化。菠菜茎叶全钾累积量在增加，根中全钾累积量降低。随氮水平的提高硝态氮与全氮、全钾比值均在增加，而硝态氮与全氮呈正相关，与全钾呈负相关。

关键词: 牛Znf313基因, 牛Znf313基因, 电子克隆, 生物信息学, 乳房炎抗性

Abstract: Effects of nitrogen levels on nitrate accumulation, nitrate and potassium uptake of spinach were studied. Results showed: biomass of spinach organs increased with the nitrogen level increasing, but the ratio in roots decreased and the leave’s increased. Nitrate content of spinach increased with the nitrogen level increased, but it was higher in leaves than roots. Nitrogen accumulation in leaves increased significantly with the nitrogen level increasing, but it changed little in roots under N2、N3、N4 levels. The ratio of total N accumulation in leaves increased but decreased in roots with the nitrogen level increasing. The K content of spinach organs significantly decreased, the K accumulation in leaves and plant increased but decreased in roots with the nitrogen level increasing. The ratio of nitrate to total N and total K decreased with the nitrogen increasing. Nitrate was positively correlated with total N and negatively corrected with total K.

中图分类号:

S147.34

赵建荣,秦改花. 氮素水平对菠菜氮、钾累积与分配及硝酸盐形成的影响[J]. 中国农学通报, 2008, 24(7): 249-253.

Zhao Jianrong, Qin Gaihua. Effects of Different Nitrogen Levels on N、K Acculamation and Allocation and Nitrate form of Spinach[J]. Chinese Agricultural Science Bulletin, 2008, 24(7): 249-253.

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