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4 2018年玉米生育期土壤贮水量 (mm)

Table 4 Soil water storage during growth period in 2018

农田	土层/cm	4月
新绿洲农田	0—20	38.24±3.14^c	34.02±2.40^d	25.34±1.63^e	28.60±1.48^cd	31.62±0.92^c	39.67±0.09^c
	20—40	27.24±1.22^g	24.13±0.07^f	17.84±0.30^f	20.50±0.07^e	23.66±1.47^f	24.32±4.41^ef
	40—60	30.24±1.00^f	24.13±2.12^f	18.06±2.52^f	19.10±2.12^e	22.76±0.40^f	21.13±0.99^f
	60—80	36.24±0.38^cd	32.58±0.05^d	27.47±0.51^de	26.64±0.05^d	30.25±3.51^cd	28.69±3.99^de
	80—100	32.24±0.36^ef	28.98±0.65^e	25.91±1.09^e	20.75±0.65^e	25.41±2.17^ef	24.80±2.71^ef
	100—120	34.24±1.03^de	32.57±1.01^d	31.30±0.42^d	26.27±1.01^d	27.78±2.34^de	26.26±1.71^ef
	120—140	38.24±0.61^c	37.79±0.15^c	37.40±1.42^c	31.78±0.15^c	32.18±2.78^c	33.01±4.20^d
	140—160	49.24±1.78^b	49.41±0.54^b	51.55±6.30^b	43.09±0.54^b	44.14±0.92^b	44.95±2.89^b
	160—180	68.24±1.05^a	65.21±0.42^a	66.20±0.05^a	64.97±0.42^a	66.82±1.20^a	62.10±0.88^a
老绿洲农田	0—20	46.84±1.70^a	40.98±1.04^ab	33.25±0.83^ab	30.41±0.68^a	32.47±1.20^ab	32.74±3.50^b
	20—40	47.62±2.51^a	46.10±3.49^ab	39.95±2.95^ab	34.26±2.32^a	36.32±3.18^ab	36.90±2.70^ab
	40—60	50.73±3.04^a	52.51±3.61^a	49.82±3.06^a	42.74±1.86^a	45.32±3.40^a	44.52±3.30^ab
	60—80	47.24±0.12^a	49.96±1.05^ab	49.10±1.44^a	42.34±2.36^a	43.93±3.03^a	43.88±3.70^ab
	80—100	44.90±3.02^a	47.96±3.87^ab	48.44±3.78^ab	42.65±4.97^a	43.38±5.40^a	43.32±5.70^ab
	100—120	45.43±7.52^a	47.39±7.12^ab	49.71±6.52^a	45.65±8.47^a	44.89±8.89^a	45.34±8.90^a
	120—140	43.35±4.66^a	44.27±3.39^ab	47.65±1.90^ab	46.84±6.80^a	46.63±8.20^a	46.86±7.60^a
	140—160	26.36±23.30^a	26.79±23.70^b	29.85±26.14^b	29.49±25.90^a	39.78±7.87^ab	38.62±9.40^ab
	160—180	30.10±26.27^a	30.14±26.29^ab	49.46±5.39^a	48.13±4.18^a	47.31±4.31^a	46.83±4.50^a