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Table 2 The details of fertilization in maize field from 2014 to 2018

From: Drivers of carbon flux in drip irrigation maize fields in northwest China

Year Date (NH4)2HPO4 (kg hm−1) Urea (kg hm−1) Compound fertilizer (kg hm−1)
2014 10-Apr (base fertilizer) 275.00 42.00  
8-Jun   150.00  
5-Jul   120.00  
2015 12-Apr (base fertilizer) 262.50 37.50  
30-May 63.00 9.00  
11-Jun 78.75 11.25  
25-Jun 168.00 24.00  
9-Jul 126.00 18.00  
27-Jul 105.00 15.00  
2016 5-Apr (base fertilizer) 300.00 225.00  
27-Jun   300.00  
15-Jul   150.00  
2017 26-Mar (base fertilizer) 375.00   375.00
15-Jun   270.00  
30-Jun   180.00  
2018 26-Mar (base fertilizer) 375.00   375.00
7-Jun   225.00  
18-Jun   150.00  
30-Jun   75.00