《Table 2 Average soil temperature at 5 and 25 cm layers under each mulching treatment with days afte

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《"Effects of mulches on water use in a winter wheat/summer maize rotation system in Loess Plateau, China"》

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Note:The data are the average values of soil temperature over the ridges and in the furrows.Different letters within a line indicate significant differences among treatments at P<0.05 level at the same soil layer.DAS，days after sowing.

We analyzed the effects of different mulch treatments on soil temperature（at 5 and 25 cm soil layers）during 2014 in maize field（Table 2）.The dynamics of average soil temperature among treatments were consistent with a decreasing trend and a reducing difference throughout the maize season.During the observation periods，the average soil temperature at 5 cm layer ranged from19.4°C to 42.5°C，with the highest and lowest values occurred in M1 and M2，respectively.Compared with M3，soil temperatures significantly increased in M1 within 40 days after sowing（DAS），while soil temperature averagely decreased by 1.4°C in M4 within 50 DAS.M1 had higher soil temperatures than M3 from 50 to 100 DAS and M3 had higher soil temperatures than M4 from60 to 100 DAS（except 70 DAS），but the differences between them were not significant.