Skip to main content

Table 2 Linear technological trend equations for rice productivity and regression statistics (R 2 and SE) in the three studied agroecosystems

From: Impacts of temperature and rainfall variation on rice productivity in major ecosystems of Bangladesh

Crop Dry Terrace Coastal
Rice—aus TRPt i  = 1.7462 + 0.0588t i
(R 2 = 0.77*; SE = 0.0722)
TRPt i  = 1.8592 + 0.0501t i
(R 2 = 0.82*; SE = 0.0596)
TRPt i  = 2.145 + 0.0308t i
(R 2 = 0.52*; SE = 0.046)
Rice—aman TRPt i  = 1.7826 + 0.0847t i
(R 2 = 0.76*; SE = 0.1022)
TRPt i  = 1.7646 + 0.0859t i
(R 2 = 0.89*; SE = 0.0982)
TRPt i  = 2.1369 + 0.0577t i
(R 2 = 0.66*; SE = 0.0755)
Rice—boro TRPt i  = 3.111 + 0.0816t i
(R 2 = 0.65*; SE = 0.109)
TRPt i  = 3.0815 + 0.0662t i
(R 2 = 0.87*; SE = 0.0768)
TRPt i  = 3.3319 + 0.0527t i
(R 2 = 0.45*; SE = 0.0844)
  1. t i  = 1, 2, 3 ….. for the period from 1996–1997 to 2008–2009
  2. SE standard error, TRP technological rice productivity
  3. * Significant at P < 0.05 level