荒漠绿洲农田土壤水热动态及硝态氮淋溶特征

李晶, 何志斌, 王建兵, 马登科, 王丽莎

Soil hydrothermal dynamics and nitrate leaching characteristics in farmland in desert oasis

Jing Li, Zhibin He, Jianbing Wang, Dengke Ma, Lisha Wang

表3 2017年玉米生育期土壤贮水量 (mm)

Table 3 Soil water storage during growth period in 2017

农田	土层/cm	4月
新绿洲农田	0—20	39.50±0.91^c	35.39±1.35^cd	29.33±0.67^cd	24.02±1.20^cd	31.43±1.76^bc	30.47±2.12^cd
	20—40	30.51±8.31^de	28.82±5.62^e	19.64±1.66^e	9.80±8.89^d	17.61±15.91^d	19.12±17.39^d
	40—60	24.59±2.22^e	27.82±1.62^e	20.84±1.28^e	13.08±0.89^d	15.01±13.02^d	24.08±1.72^cd
	60—80	27.97±0.73^de	33.51±2.71^de	24.98±6.31^de	29.26±9.79^bc	26.96±1.48^cd	32.84±5.71^c
	80—100	26.83±1.90^e	31.07±0.85^de	26.48±0.95^de	18.92±6.24^cd	21.49±4.30^cd	25.87±0.27^cd
	100—120	33.56±1.90^cd	35.14±1.61^cd	31.55±2.55^cd	19.90±2.20^cd	24.56±2.24^cd	30.32±1.56^cd
	120—140	38.18±1.81^cd	38.21±1.61^c	36.93±2.70^c	24.80±3.08^cd	26.16±2.95^cd	33.97±1.65^bc
	140—160	49.25±4.14^b	49.24±4.11^b	48.68±4.97^b	34.44±1.71^ab	33.30±2.67^ab	44.92±2.56^b
	160—180	65.41±3.53^a	66.73±4.43^a	67.09±4.48^a	44.46±6.42^a	41.49±6.42^a	62.02±4.23^a
老绿洲农田	0—20	41.04±5.56^b	44.43±7.33^b	43.69±7.6^ab	33.44±6.79^b	37.16±3.96^a	35.71±5.15^b
	20—40	45.07±6.08^b	46.84±7.80^b	44.59±6.27^ab	32.85±3.13^b	37.82±4.29^a	39.07±7.89^ab
	40—60	50.12±5.87^a	55.27±7.50^ab	52.15±7.23^ab	37.39±5.49^b	42.23±4.30^a	47.56±9.18^ab
	60—80	49.78±1.10^ab	55.10±1.88^ab	52.08±1.48^ab	38.86±2.10^b	41.39±1.28^a	48.74±1.83^ab
	80—100	48.51±3.66^ab	52.89±2.90^ab	52.24±4.55^ab	38.90±3.64^b	39.31±2.31^a	46.69±1.07^ab
	100—120	49.87±7.37^ab	52.97±7.01^ab	52.33±6.67^ab	43.61±9.05^ab	42.33±8.65^a	45.94±6.77^ab
	120—140	46.99±7.20^ab	47.96±7.71^b	48.39±8.54^ab	39.20±12.48^b	36.81±9.34^a	39.93±6.25^ab
	140—160	48.43±4.08^ab	52.96±4.29^ab	55.06±3.77^a	49.95±14.70^ab	37.72±7.42^a	41.81±6.32^ab
	160 —180	35.36±11.12^b	37.03±12.95^b	38.38±14.08^b	30.90±16.94^b	23.02±12.56^a	50.42±11.77^a