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

文献类型： 外文期刊

第一作者： Yang, Yonghui

作者： Yang, Yonghui;Wu, Jicheng;Gao, Cuimin;Zhang, Shuiqing;Yang, Yonghui;Liu, Hao;Yang, Yonghui;Wu, Jicheng;Gao, Cuimin;Yang, Yonghui;Wu, Jicheng;Gao, Cuimin;Zhang, Sensen;Tang, Darrell W. S.

作者机构：

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

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）

ISSN： 1664-462X

年卷期： 2023 年 14 卷

页码：

收录情况： SCI

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.

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