“Covering Effects” under Diurnal Temperature Variations in Arid and Semiarid Areas

Table 3

Test design of the water vapor migration.

Group	Soil type	Initial moisture content (%)	Lid	Test time (day)
A	Loess	14.1	Yes	60
B	Loess	14.1	No	60
C	Loess	14.1	Yes	1, 10, 20, 30, 40, 50, 60
D	Sand	9	Yes	60