Table 1.

Treatments of irrigation and drainage of tomato under rain-shelter cultivation.

Treatments	Description
T1 (CK)	Irrigation lower limit is 80% of field capacity, no subsurface pipe drainage
T2	Irrigation lower limit is 80% of field capacity, the buried underground pipe depth is 0.6 m
T3	Compared to T2: 60% water was applied at the irrigation time of T2, the buried underground pipe depth is 0.6 m
T4	Irrigation lower limit is 80% of field capacity, the buried underground pipe depth is 0.8 m,
T5	Compared to T4: 60% water was applied at the irrigation time of T4, the buried underground pipe depth is 0.8 m

CK is the control treatment.