Table 2. The total irrigation amount and monthly irrigation amount.

Seedlings age Container volume (L) Total irrigation amount (L/year/tree) Monthly irrigation amount (L/month/tree)
April May June July Aug. Sept. Oct.
4-year-old 40 232 16 40 40 48 56 16 16
288 24 48 48 56 64 24 24
344 32 56 56 64 72 32 32
8-year-old 90 360 32 56 56 64 72 40 40
416 40 64 64 72 80 48 48
472 48 72 72 80 88 56 56