Soil properties and microbial communities of spring maize filed in response to tillage with straw incorporation and nitrogen fertilization in northeast China
文献类型： 外文期刊
作者： Sui, Pengxiang 1 ; Tian, Ping 1 ; Wang, Zhengyu 1 ; Lian, Hongli 1 ; Yang, Yadong 4 ; Ma, Ziqi 1 ; Jiang, Ying 1 ; Zheng, Jinyu 2 ; Qi, Hua 1 ;
作者机构： 1.Shenyang Agr Univ, Coll Agron, Shenyang, Peoples R China
2.Jilin Acad Agr Sci, Inst Agr Resources & Environm, Changchun, Peoples R China
3.Minist Agr & Rural Affairs, Key Lab Crop Ecophysiol & Farming Syst Northeast, Changchun, Peoples R China
4.China Agr Univ, Coll Agron & Biotechnol, Beijing, Peoples R China
关键词： Tillage practices; Straw incorporation; Soil enzyme activities; Microbial communities; N fertilization
期刊名称：PEERJ （ 影响因子：3.061； 五年影响因子：3.537 ）
ISSN： 2167-8359
年卷期： 2022 年 10 卷
页码：
收录情况： SCI
摘要： Soil enzymes and microorganisms are both important to maintaining good soil quality and are also sensitive to changes in agricultural management. The individual effects of tillage, straw incorporation and nitrogen (N) fertilization on soil enzymes and microflora have been widely acknowledged, but their interactive effect remains largely unknown. In a 5-year in-situ field study, effects of rotary (RTS) and plow tillage (PTS) practices with straw incorporation combined with three N fertilization levels (0 kg N ha(-1), CK; 187 kg N ha(-1), MN; 337 kg N ha(-1), HN) on soil enzyme activities and microbial communities were assessed. Our results showed that the activities of beta-glucosidase (beta G), N-acetylglucosaminidase (NAG) and acid phosphatase (APH) were improved in RTS+MN. The bacterial and fungal abundances in RTS+MN and RTS+HN were 1.27-27.51 times higher than those in other treatment groups. However, the bacterial and fungal alpha diversities were enhanced in PTS+MN and PTS+CK compared with other treatments, respectively. Proteobacteria and Basidiomycota were the predominant phylum for the respective bacterial and fungal communities. Moreover, significant interactive effects were found in the fungal community composition, but only minor impacts were observed on the bacterial community composition. Soil water content and penetration resistance contributed more to the soil enzyme activity and microbial community than other soil properties investigated, whereas there was a significant positive correlation between beta G and APH activities and microbial abundance. These findings can provide new insights into tillage with straw incorporation and N fertilization on maize cultivation in northeast China.
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