Soil enzyme activities, soil physical properties, photosynthetic physical characteristics and water use of winter wheat after long-term straw mulch and organic fertilizer application

Frontiers in Plant Science

Plant Science

Sensen Zhang¹  Shuiqing Zhang²  Yonghui Yang³  Jicheng Wu⁴  Cuimin Gao⁴  Hao Liu⁵  Darrell W. S. Tang⁶ 

[1] Henan Provincial Institute of Geology, Zhengzhou, China;Institute of Plant Nutrition & Resource Environment, Henan Academy of Agricultural Sciences, Zhengzhou, China;Institute of Plant Nutrition & Resource Environment, Henan Academy of Agricultural Sciences, Zhengzhou, China;International Joint Research Laboratory for Global Change Ecology, School of Life Sciences, Henan University, Kaifeng, Henan, China;Yuanyang Experimental Station of Crop Water Use, Ministry of Agriculture, Yuanyang, China;Field Scientific Observation and Research Station of Water Saving Agriculture in the Yellow River Basin of Henan Province, Yuanyang, China;Institute of Plant Nutrition & Resource Environment, Henan Academy of Agricultural Sciences, Zhengzhou, China;Yuanyang Experimental Station of Crop Water Use, Ministry of Agriculture, Yuanyang, China;Field Scientific Observation and Research Station of Water Saving Agriculture in the Yellow River Basin of Henan Province, Yuanyang, China;International Joint Research Laboratory for Global Change Ecology, School of Life Sciences, Henan University, Kaifeng, Henan, China;Soil Physics and Land Management Group, Wageningen University & Research, Wageningen, Netherlands;

关键词: straw;    soil microbial biomass nitrogen and carbon;    organic fertilizer;    soil enzymes;    photosynthetic physical characteristics;    water use efficiency;   

DOI  :  10.3389/fpls.2023.1186376

 received in 2023-03-14, accepted in 2023-04-27,  发布年份 2023

来源: Frontiers

【 摘 要 】

IntroductionInappropriate residue and nutrient management leads to soil degradation and the decline of soil quality and water storage capacity.MethodsAn ongoing field experiment has been conducted since 2011 to investigate the effects of straw mulching (SM), and straw mulching combined with organic fertilizer (SM+O), on winter wheat yield, including a control treatment (CK, no straw). We studied the effects of these treatments on soil microbial biomass nitrogen and carbon, soil enzyme activity in 2019, photosynthetic parameters, evapotranspiration (ET), water use efficiency (WUE), and yields over five consecutive years (2015-2019). We also analyzed the soil organic carbon, soil structure, field capacity, and saturated hydraulic conductivity in 2015 and 2019. ResultsResults indicate that compared with CK, SM and SM+O treatments increased the proportion of >0.25mm aggregates, soil organic carbon, field capacity, and saturated hydraulic conductivity, but decreased the soil bulk density. In addition, the SM and SM+O treatments also increased soil microbial biomass nitrogen and carbon, the activity of soil enzymes, and decreased the carbon-nitrogen ratio of microbial biomass. Therefore, SM and SM+O treatments both increased the leaf water use efficiency (LWUE) and photosynthetic rate (Pn), and improved the yields and water use efficiency (WUE) of winter wheat. The combination SM (4.5 t/ha)+O (0.75 t/ha) was more effective than SM alone, and both treatments were superior to the control.ConclusionBased on the results of this study, SM+O is recommended as the most effective cultivation practice.

【 授权许可】

Unknown   
Copyright © 2023 Yang, Liu, Wu, Zhang, Gao, Zhang and Tang