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巴克特里亞 經濟 Tier 5

Perennial Irrigation

Basic irrigation systems were widespread in the ancient world because they were simple to maintain. Perennial irrigation was rarer, and required longer canal systems, a method of storage, and better maintenance to ensure that silt and salt build-up was kept in check. In Mesopotamia, the river system was able to supply water to the surrounding arable land in the dry season through a system of canals, closed off by dykes and sluice gates. Water was stored in reservoirs, either natural or man-made, and then lifted into the irrigation channels. While this was a labour-intensive task, the results of such toil were remarkable and hugely beneficial to harvests in the area.

繁體中文化: 巴哈姆特全軍破敵板

Node Set 經濟 Tier 5

research_points 4600

cost_per_round 767

Effects

• +7食物
• -6%農業建築施工花費 （所有區域）
• +6%農業財富值 （所有區域）

Requires
Requires Technologies	Land Reclamation

Enables
Enables Buildings	Granary Complex Terraced Vineyards Olive Oile Complex 灌溉渠