Effects of Irrigation Strategy and Plastic Film Mulching on Soil N2O Emissions and Fruit Yields of Greenhouse Tomato

Agriculture

卷:12

Jingwei Wang¹  Zhenguang Lu²  Mingzhi Zhang²  Yushun Zhang²  Yuan Li³ 

[1] College of Resources and Environment, Shanxi University of Finance and Economics, Taiyuan 030006, China;

[2] Henan Provincial Water Conservancy Research Institute, Zhengzhou 450053, China;

[3] Northwest Land and Resources Research Center, Shaanxi Normal University, Xi’an 710119, China;

关键词: irrigation strategy;    plastic film mulching;    denitrifying bacteria community;    N₂O emissions;    yield;   

DOI  :  10.3390/agriculture12020296

来源: DOAJ

【 摘 要 】

Agriculture is a major source of global greenhouse gas emissions. Approximately 1/3 of vegetables in China are produced in greenhouses. However, the effects of different irrigation strategies and plastic film (PF) mulching combinations on N₂O emissions and tomato fruit yields in greenhouses are unclear. The aims of this study were to explore the effects of micro-sprinkler irrigation under plastic film (MSPF), drip irrigation under plastic film (DIPF) and micro-sprinkler irrigation (MSI) on the soil nutrients, enzyme activity, nirS-type denitrifying bacterial community, N₂O emissions and fruit yields of tomato. The results showed that MSPF could improve the uniformity of soil water distribution and surface (0–40 cm) soil water content. Film mulching could increase soil temperature at depths of 5–25 cm. Both MSPF and DIPF increased microbial nitrogen, promoted the activity of rhizosphere soil urease and leucine aminopeptidase, changed the community of denitrifying bacteria, accelerated the turnover of soil nutrients and improved yield and water use efficiency. PF mulching had a greater impact on the nirS-type denitrifying bacterial community when compared to irrigation strategy. We conclude that MSPF can be used to configure commercially available installation and operation. The comprehensive benefit of MSPF treatment is that it is more profitable than that of DIPF.

【 授权许可】

Unknown