膜孔肥液自由入渗土壤铵态氮运移和分布特性试验研究

费良军; 脱云飞; 穆红文

Experimentation study on transports and distribution characteristic of without restrict fertile solution infiltration under film hole irrigation

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DOI：10.7606/j.issn.1000-7601.2008.03.39

Key Words: film hole irrigation without restrict infiltration transports distribution

Author Name	Affiliation
FEI Liangjun	Institute of Water Resources of Xi’an University of Technology,Xi’an, Shaanxi 710048,China
TUO Yunfei	Institute of Water Resources of Xi’an University of Technology,Xi’an, Shaanxi 710048,China
MU Hongwen	Institute of Water Resources of Xi’an University of Technology,Xi’an, Shaanxi 710048,China

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Abstract:

Based on lab experiment on transports and distribution characteristic of NH⁺₄—N without restrict fertile solution infiltration under film hole irrigation．The results indicated that in the process without restrict fertile solution infiltration the transports of NH⁺₄—N wetting front is slower than that of soil water content but the content NH⁺₄—N and soil water content gradually reduces take the center of film hole as the center. Again in redistributed initial period?the transports of NH⁺₄—N and soil water content of wetting front is consistent?the content NH⁺₄—N and soil water content gradually reduces take the center of film hole as the center and reduces the speed to slow down?but lengthens again along with the redistributed time?The NH⁺₄—N starts to transform NO^{-^{₃—N?The NH⁺₄—N content reduces and the NO^{-^{₃—N content increase?this research for applying fertilizer the irrigation technology of film hole irrigation to establish the technology.}}}}