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5 2017年休耕期土壤贮水量 (mm)

Table 5 Soil water storage during fallow period in 2017

农田	土层/cm	10月	11月	12月	1月	2月	3月
新绿洲农田	0—20	29.90±2.33^c	35.9±0.77^a	20.62±1.59^b	18.68±2.09^bc	21.05±1.89^d	37.41±2.91^cd
	20—40	27.82±4.67^c	32.4±6.80^a	20.12±3.07^b	16.03±2.53^c	16.22±2.64^d	28.59±6.74^d
	40—60	29.40±10.09^c	33.0±10.63^a	26.26±3.93^ab	17.27±0.67^c	17.05±0.98^d	35.38±4.03^cd
	60—80	28.58±1.26^c	32.5±2.43^a	32.16±2.54^ab	20.78±2.16^bc	17.86±2.02^d	28.85±2.23^d
	80—100	26.41±1.22^c	30.3±0.31^a	31.05±0.26^ab	22.80±0.39^bc	18.38±1.40^d	27.92±1.14^d
	100—120	30.24±1.50^c	34.0±1.30^a	35.06±1.42^ab	34.91±1.77^bc	20.63±1.65^d	31.08±2.47^cd
	120—140	33.55±1.84^c	38.7±1.70^a	40.02±1.60^ab	40.54±1.66^bc	37.71±2.33^c	39.71±1.36^c
	140—160	43.86±2.46^b	49.8±3.49^a	51.43±3.61^a	51.94±3.64^a	48.46±3.23^b	50.69±3.70^b
	160—180	61.26±5.69^a	43.3±37.73^a	44.34±38.53^ab	44.58±8.74^ab	65.63±4.78^a	66.64±3.96^a
老绿洲农田	0—20	32.55±1.10^ab	44.0±5.04^a	27.71±4.20^b	24.07±2.18^b	25.82±1.52^b	40.84±1.15^d
	20—40	36.52±4.79^ab	45.3±5.52^a	39.92±5.48^a	29.86±2.70^b	28.95±1.69^b	42.78±3.69^cd
	40—60	13.45±3.29^c	47.5±2.99^a	47.49±2.88^a	39.20±5.14^a	34.03±3.52^a	45.48±2.34^cd
	60—80	41.25±0.58^a	44.8±1.03^a	46.12±0.38^a	42.61±2.22^a	34.39±2.04^a	44.30±0.48^cd
	80—100	41.26±3.62^a	42.9±2.69^a	44.42±2.83^a	43.72±3.42^a	37.51±4.74^a	43.23±3.25^bc
	100—120	44.09±7.64^a	44.6±7.50^a	45.86±7.25^a	46.13±7.35^a	44.84±7.70^a	45.10±7.71^a
	120—140	42.16±5.35^a	42.6±5.20^a	43.67±4.79^a	44.28±4.55^a	44.15±4.90^a	43.55±4.91^a
	140—160	17.07±4.14^bc	38.8±6.43^a	39.63±6.51^a	40.16±6.58^a	40.12±6.41^a	39.71±6.40^ab
	160 —180	45.48±3.96^a	44.3±4.57^a	44.98±4.77^a	45.44±4.82^a	45.66±4.86^a	45.33±4.74^a