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. 2017 Oct 31;8:1877. doi: 10.3389/fpls.2017.01877

Table 5.

Average economic benefits generated by RC planting of spring corn between 2007 and 2010.

Year Treatments LCA MC MCC SFC IV OV YI NI NID
2007 RCSB 1,800 1,260 1,500 3,200 7,760 20,297 2,528 12,537 2,840
RCSL 1,800 1,335 1,500 3,200 7,835 18,533 1,548 10,698 1,001
RCSN 1,650 585 1,500 3,200 6,935 18,329 1,435 11,394 1,698
CF 1,350 0 1,500 3,200 6,050 15,746 - 9,696 -
2008 RCSB 1,800 1,260 1,500 3,200 7,760 21,325 3,003 13,565 3,695
RCSL 1,800 1,335 1,500 3,200 7,835 19,008 1,716 11,173 1,304
RCSN 1,650 585 1,500 3,200 6,935 19,082 1,757 12,147 2,278
CF 1,350 0 1,500 3,200 6,050 15,919 - 9,869 -
2009 RCSB 1,800 1,260 1,500 3,200 7,760 19,361 2,619 11,601 3,004
RCSL 1,800 1,335 1,500 3,200 7,835 16,303 920 8,468 −129
RCSN 1,650 585 1,500 3,200 6,935 16,058 784 9,123 526
CF 1,350 0 1,500 3,200 6,050 14,647 - 8,597 -
2010 RCSB 1,800 1,260 1,500 3,200 7,760 17,573 2,508 9,813 2,804
RCSL 1,800 1,335 1,500 3,200 7,835 15,921 1,590 8,086 1,077
RCSN 1,650 585 1,500 3,200 6,935 14,791 962 7,856 847
CF 1,350 0 1,500 3,200 6,050 13,059 - 7,009 -
Average value over 4 years RCSB 1,800 1,260 1,500 3,200 7,760 19,639 2,665 11,879 3,086
RCSL 1,800 1,335 1,500 3,200 7,835 17,441 1,444 9,606 813
RCSN 1,650 585 1,500 3,200 6,935 17,065 1,235 10,130 1,337
CF 1,350 0 1,500 3,200 6,050 14,843 - 8,793 0

RCSB, means rain-harvesting ridges and furrows planting covered with 8% biodegradable films in furrows; RCSL, means rain-harvesting ridges and furrows planting covered with liquid films in furrows; RCSN means rain-harvesting ridges and furrows planting with no films mulching in furrows; CF, means the conventional flat planting without film mulching; LC, Labor costs (Chinese yuan (CNY) ha-1); MC, film mulching costs (CNY ha-1); MCC, machine-cultivated costs (CNY ha-1); SFC, seed and fertilizer costs (CNY ha-1); IV, input value (CNY ha-1) = LC +MC+MCC+SFC; OV, output value (CNY ha-1); YI, average yield increase in 4 Years (kg ha-1); NI, net income (CNY ha-1) = OV – total IV; NID, net income difference (CNY ha-1) from CF. ALabor cost was 60 CNY per person per day; plastic film cost was 13 CNY kg-1; biodegradable film 15 CNY kg-1; liquid film 10 CNY kg-1; corn seed price was paid local Chinese government by 1.8 CNY kg-1.