Water-Saving Benefit Model Analysis of Plain Reservoirs in Arid Areas Based on Nonlinear Data Prediction under Floating Ball Cover

Table 7

Basic programme cash flows.

Particular year	0	1	2	3	4	5	6–10
Sales revenue ten thousand yuan	0	8.77	8.77	8.77	8.77	8.77	8.77
Total investment ten thousand yuan	43.61	3.74	3.12	2.44	1.71	0.92	0.26