长期耕作对半干旱区人工沙质稻田土壤理化性质及酶活性的影响

丛安琪, 詹瑾, 王宁, 张铜会, 刘新平

Effects of long-term cultivation on soil physicochemical properties and enzyme activities of artificial sandy paddy field in semi-arid region

Anqi Cong, Jin Zhan, Ning Wang, Tonghui Zhang, Xinping Liu

表1 耕作年限对人工沙质稻田土壤pH和电导率的影响

Table 1 Effect of cropping years on soil pH and electrical conductivity in artificial sandy paddy

耕作年限/a	土壤理化性质
耕作年限/a	pH	电导率/(μS·cm^-1)	容重/(g·cm^-3)
0~10 cm土层
CK	7.02±0.06^a	31.17±5.30^b	1.55±0.01^a
1	7.00±0.39^a	63.75±7.65^b	1.52±0.01^ab
5	6.37±0.40^ab	133.25±15.89^a	1.46±0.02^bc
10	6.16±0.26^ab	151.53±21.73^a	1.45±0.01^bc
15	6.03±0.23^b	153.98±26.65^a	1.44±0.05^bc
20	5.70±0.18^b	150.70±23.48^a	1.38±0.03^c
27	5.91±0.32^b	144.50±14.52^a	1.44±0.02^bc
10~20 cm土层
CK	6.98±0.02^ab	31.00±5.12^c	1.54±0.02^bcd
1	7.15±0.26^a	67.75±9.23^bc	1.63±0.01^a
5	6.90±0.34^ab	159.30±23.55^a	1.52±0.02^cd
10	6.71±0.24^abc	136.93±26.37^a	1.58±0.01^bc
15	6.57±0.32^abc	120.73±5.17^ab	1.57±0.02^bc
20	6.01±0.14^c	145.88±24.47^a	1.51±0.02^d
27	6.29±0.04^bc	108.55±11.84^ab	1.59±0.03^ab