饲料油菜作绿肥对后茬麦田土壤肥力及细菌群落的影响

李文广,杨晓晓,黄春国,薛乃雯,夏清,刘小丽,张晓琪,杨思,杨珍平,高志强

Effects of Rapeseed Green Manure on Soil Fertility and Bacterial Community in Dryland Wheat Field

WenGuang LI,XiaoXiao YANG,ChunGuo HUANG,NaiWen XUE,Qing XIA,XiaoLi LIU,XiaoQi ZHANG,Si YANG,ZhenPing YANG,ZhiQiang GAO

表1 饲料油菜播量（S）及还田时期（D）对后茬麦田土壤养分及酶活性的影响

Table 1 Effects of feed rape sowing density (S) and returning date (D) on soil nutrients and enzyme activities of wheat field

处理 Treatment 自由度 DF 饲料油菜生物量 Feed rape biomass (kg·hm-2) 速效磷 Available P (mg·kg-1) 碱解氮 Alkaline N (mg·kg-1) 有机质 SOM (g·kg-1) 脲酶 Urease (mg·g-1·24h-1) 碱性磷酸酶 Alkaline phosphatase (mg·g-1·24h-1) 蔗糖酶 Sucrase (mg·g-1·24h-1) S1 D1 793.7c 14.50b 40.97d 11.25cde 0.29fg 1.19ef 0.74f D2 794.5c 15.04b 40.38d 9.35e 0.27g 1.13f 0.82f D3 815.2c 15.16b 40.65d 10.17de 0.30efg 1.30de 0.84ef S2 D1 1367.4b 15.49ab 42.50cd 12.86bcd 0.35cd 1.46ab 0.98de D2 1379.0b 16.03ab 42.07d 13.29bc 0.33de 1.42bc 1.11cd D3 1388.8b 16.10ab 44.28cd 14.32b 0.34cd 1.33cd 1.11cd S3 D1 1866.47a 16.39ab 46.88bc 14.33b 0.37bc 1.47ab 1.26bc D2 1854.3a 16.60ab 49.97ab 15.05b 0.40ab 1.54ab 1.37ab D3 1938.7a 17.28a 53.55a 18.47a 0.42a 1.56a 1.42a CK 14.58b 41.13d 11.51cde 0.32def 1.24def 0.73f S1 1342.52a 14.90b 40.67b 10.26c 0.29c 1.20c 0.79c S2 1349.51a 15.87ab 42.95b 13.49b 0.34b 1.40b 1.06b S3 1374.01a 16.76a 50.13a 15.95a 0.39a 1.52a 1.35a D1 801.16c 15.46a 43.45a 12.81b 0.34a 1.37a 0.99b D2 1378.40b 15.89a 44.14a 12.56b 0.34a 1.36a 1.09a D3 1886.48a 16.18a 46.06a 14.32a 0.35a 1.39a 1.12a F值F value 播量S 2 394.43** 6.35** 29.43** 39.32** 80.38** 48.32** 88.01** 还田时期D 2 0.37 0.96 2.39 4.35* 2.01 0.45 5.71* 播量×还田时期S×D 4 0.34 0.73 1.34 2.93 2.25 4.02* 0.12 误差Error 12 总变异Total 26