期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：170
期号：2
页码：022170
DOI：10.1088/1755-1315/170/2/022170
语种：English
出版社：IOP Publishing
摘要：Soil Water Heat Carbon and Nitrogen Simulator (WHCNS) model was used to simulate the soil water and fertilizer coupling effect of potato in soft rock and sand compound soil, with a view to establishing a scheme to optimize soil water and fertilizer in local climate and soil properties. In this study, three ratios (soft rock: sand = 1: 1, 1: 2 and 1: 5) of soft rock and sand compound soil were conducted. The model was validated by field experiments. The results show that the model did good in simulating water and fertilizer dynamic. With decreasing soft rock content in compound soil, the evapotranspiration was no significant change, and water drainage was increased significantly. Water use efficiency, N use efficiency and fertilizer use efficiency could reach 4.38 kg m-3, 136.80 and 96.90 kg kg-1 N-1, respectively.
