TABLE 1.

Maize biomass at the VT stage (the tassel stage) and grain yield under different agricultural practices.

Agricultural practices	Root biomass (g/plant)	Shoot biomass (g/plant)	Root-shoot ratio	Grain yield (×103 kg/ha)
C	19.3 ± 1.4b	164 ± 5c	0.12 ± 0.02a	11.7 ± 0.5b
CS	16.5 ± 1.5c	182 ± 6a	0.07 ± 0.01b	10.9 ± 0.3c
R	23.5 ± 1.1a	170 ± 6bc	0.14 ± 0.05a	12.9 ± 0.2a
RS	23.2 ± 1.3a	178 ± 8ab	0.14 ± 0.03a	12.7 ± 0.3a

C: continuous maize cropping without straw retention; CS: continuous maize cropping with straw mulching; R: maize-peanut rotation without straw retention; RS: maize-peanut rotation with straw mulching.

Different letters indicate significant difference (p < 0.05) under different treatments by one-way ANOVA.