半固定式喷灌系统的管网造价由两部分组成:埋设于地下的干管部分(包括总干管、干管、分干管)及地面移动支管部分。干管部分造价占管网造价的45～70％,移动支管部分造价占管网价造的30～55％。要降低半固定式喷灌系统管网造价就要分别从干管部分及移动支管部分想办法。降低干管部分的 Semi-fixed sprinkler system pipe network cost consists of two parts: buried in the underground part of the main pipe (including the main pipe, dry pipe, dry pipe) and the ground moving branch. The cost of the trunk pipe accounts for 45-70% of the cost of the pipe network, and the cost of the mobile pipe part accounts for 30-55% of the pipe net price. To reduce the cost of semi-fixed sprinkler system pipe network, respectively, from the trunk part and the mobile branch part of the way. Lower part of the main pipe