In order to explore the differences in soil greenhouse gas emissions between Shihezi Irrigation Area

Xinhuzongchang Irrigation Area and Mosowan Irrigation Area

through long-term field observation and sample collection

adopts the static closed chamber-GC technique

daily observation was conducted to observe the soil greenhouse gases in Shihezi Irrigation District

Xinhuzongchang Irrigation Area and Mosowan Irrigation Area of Manas River Basin in 2019 at the seedling stage

flowering boll stage and spitting stage

and statistical m

ethods were applied

and combined with soil temperature

water content

pH

organic carbon

ammonium nitrogen

nitrate nitrogen and other factors in the Manas River Basin. The results showed that: (1) Soil CO

2

and N

2

O had obvious seasonal and daily changes

and the peak of soil CO

2

and N

2

O emission fluxes appeared at the flowering boll stage

which were 527.160 and 1.713 mg/(m

2

·h). At the same time

the peak of the daily change of CO

2

emission flux appeared at 13:00

and the daily change peak of N

2

O emission flux appeared at 17:00

which was manifested as a unipolar curve. The emission fluxes of the two soil greenhouse gases during the growth period were different between different irrigation areas

showing the irrigation area of Xinhuzongchang

>

Mosuowan

>

Shihezi. (2) Soil CO

2

and N

2

O emission fluxes were more significantly affected by temperature

and soil CO

2

and N

2

O were significantly positively correlated with temperature. The Q

10

of Shihezi Irrigation District

Xinhuzongchang Irrigation District and Mosowan Irrigation District were 1.31~1.82

1.40~2.68 and 1.32~1.92

respectively. (3) The carbon reservoir reserves of cotton in Shihezi Irrigation District

Xinhuzongchang Irrigation Area and Mosowan Irrigation District were 3.34

2.93 and 2.8 Tg

respectively.