地膜覆盖与施肥对秸秆碳氮在土壤中固存的影响

王淑颖,李小红,程娜,付时丰,李双异,孙良杰,安婷婷,汪景宽

Effects of Plastic Film Mulching and Fertilization on the Sequestration of Carbon and Nitrogen from Straw in Soil

WANG ShuYing,LI XiaoHong,CHENG Na,FU ShiFeng,LI ShuangYi,SUN LiangJie,AN TingTing,WANG JingKuan

表4 不同覆膜和施肥处理土壤秸秆碳和氮残留率

Table 4 Residue percentage of straw carbon and nitrogen in soil under different mulching and fertilization treatments

栽培模式 Cultivation mode	施肥处理 Fertilization treatment	秸秆碳的残留率 Residual percentage of straw carbon (%)		秸秆氮的残留率 Residual percentage of straw nitrogen (%)
栽培模式 Cultivation mode	施肥处理 Fertilization treatment	30 d	150 d	30 d	150 d
不覆膜 No mulching	CK	45.35±1.32 A*	35.82±0.52 c	12.24±0.20 A*	10.13±0.23 a
	N₄	37.21±0.30 C	37.84±0.65 b	9.09±0.27 B*	7.87±0.24 e
	M₂N₂	31.52±0.39 D	31.45±0.60 e	8.48±0.05 C	8.50±0.16 d
覆膜 Mulching	CK	44.58±0.79 A*	31.43±0.58 e	11.93±0.26 A*	9.92±0.18 ab
	N₄	40.15±1.11 B	40.96±0.14 a	9.53±0.07 B	9.58±0.15 bc
	M₂N₂	33.34±0.96 D	34.12±0.58 d	9.06±0.25 B	9.41±0.02 c