Skip to main content

Table 6 Changes in weeds weight at different cotton growth stages in different treatments in 2014 and 2015 (g·m−2)

From: Soil replacement combined with subsoiling improves cotton yields

Year

Treatment

Seedling stage

Initial bloom stage

Boll opening stage

2014

CK

9.7 a

16.9 a

66.8 a

T1

0.5 b

1.2 b

0.5 b

T2

0.8 b

0.5 b

0.4 b

T3

0.2 b

2.0 b

1.8 b

2015

CK

10.4 a

15.9 a

81.7 a

T1

0.8 b

1.7 b

0.9 b

T2

1.2 b

0.8 b

1.7 b

T3

0.1 b

2.4 b

1.6 b

  1. Note: The treatments were as follows: T1 (replacing the topsoil from 0~15 cm with the subsoil from 15~30 cm), T2 (replacing the topsoil from 0~20 cm with the subsoil from 20~40 cm plus subsoiling at the 40~55 cm layer), T3 (replacing the topsoil from 0~20 cm with the subsoil from 20~40 cm plus subsoiling at the 40~70 cm layer) and CK (rotary tillage within 15 cm). Different small letters indicated significant difference between treatments within the same year