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Table 3 Results of FGLS (groupwise heteroscedasticity + serial correlation)

From: Exploring the influencing factors of continuous crop residue supply: from the perspective of a sustainable and bioenergy-oriented crop cultivation

Variables

Coefficient

Z value

C

− 0.642

− 0.77

°C

0.147**

3.24

°C2

− 0.004**

− 2.17

TGP

0.672***

3.51

PSC

0.009***

4.91

PST

− 0.035***

− 3.17

FS

0.404*

8.13

SDI

6.941***

8.01

EP

− 0.251***

− 4.03

EDL

− 1.771***

− 6.59

Wald test

P = 0.00

T

10

N

31

  1. ***, **, *Significant at 1%, 5%, and 10% levels, respectively