水肥耦合效应对保护地土壤硝态氮运移的影响

Abstract

Abstract: Coupling effects of water and fertilizers on translocation of nitrate nitrogen in protected land were studied with the design of quadratic orthogonal rotational combinations.The results show that content of nitrate nitrogen in 0-20 cm soil layer is mainly affected by water and nitrogenous fertilizer,and negatively related to the former but positively to the latter.And the effect of water is more significant than that of nitrogenous fertilizer.Contents of nitrate nitrogen in 20-40 cm and 40-60 cm soil layers are also mainly affected by water and nitrogen fertilizer,but the effect of fertilizer is more significant than that of the water.The effects of the two are antagonistic on content of nitrate nitrogen in 0-20 cm soil layer.The effect of phosphate fertilizer is not significant on content of nitrate nitrogen in the three soil layers. 更多

Key words: coupling effect of water and fertilizer, protected land, nitrate nitrogen in soil, Capsicum annuum

CLC Number:

S153

LIANG Yun-Jiang, YI Yan-Li, XU Guang-Bo, ZHANG Shuang, YIN Ying-Min. Coupling effects of water and fertilizers on translocation of nitrate nitrogen in protected land[J]. Journal of Ecology and Rural Environment, 2004, 20(3): 32-36.

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Coupling effects of water and fertilizers on translocation of nitrate nitrogen in protected land

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