传统灌溉条件下水肥滞留效益研究

Water and Fertilizer Retention Efficiency under Traditional Irrigation Condition

研究了径流灌溉时不同作物样地对水肥的滞留效益。结果表明,4种作物对水肥的滞留效果呈现出相似性,在9 m之前滞留效益十分显著,9 m之后,滞留效益呈现出明显的下降趋势。在此基础上得出滞留率拟合方程,4种作物的拟合函数均为对数函数,该拟合函数可以将4种作物的滞留率数量化,并为相关研究提供借鉴。

This paper mainly studied the water and fertilizer retention benefits of the runoff irrigation of different crops through experiments. The results showed that the effects of four kinds of crops on water and fertilizer retention was similar, before 9 m the retention efficiency was very significant, and after 9 m the retention efficiency showing a clear downward trend. Based on these the retention equation were achieved, and the fitting function of four crops were logarithmic function, the fitting function could have the retention rate of four kinds of crops quantified, and provide some references for related research.