Pipeline Optimization for an Economical Microsprinkler Irrigation System Based on a Hybrid Genetic Algorithm

Table 5

Optimization of pipe combination with bidirectional laying of capillary pipes.

Capillary pipe layout	Combination	Section numbers of branch pipe					Section number ofcapillary pipe		Cost per unitarea/(RMB/hm^2)	Irrigation area/hm^2
							Downhill	Uphill
Length direction	(4)	0	0	6	2	15	65	34	5192.7	0.066
	(5)	0	0	6	2	15	55	44	5192.7	0.066
Width direction	(6)	0	0	11	2	18	50	22	5316.1	0.066
	(7)	0	0	11	2	18	37	62	5316.1	0.066