Straw and biochar effects on soil properties and tomato seedling growth under different moisture levels

文献类型： 外文期刊

第一作者： Khan, Muhammad Numan

作者： Khan, Muhammad Numan;Lan, Zhilong;Sial, Tanveer Ali;Zhao, Ying;Zhang Jianguo;Zhang, Afeng;Khan, Muhammad Numan;Zhao, Ying;Haseeb, Abdul;Hill, Robert Lee

作者机构：

关键词： Soil amendments; soil enzymes; antioxidant activity; tomato seedling; physiology

期刊名称：ARCHIVES OF AGRONOMY AND SOIL SCIENCE （ 影响因子：3.092； 五年影响因子：2.745 ）

ISSN： 0365-0340

年卷期： 2019 年 65 卷 12 期

页码：

收录情况： SCI

摘要： A greenhouse experiment was conducted to evaluate the effects of wheat straw and its biochar on tomato seedling growth and soil physicochemical properties under different moisture levels. Treatments included control (no amendments, CK), three biochar amendments (B1: 1%, B2: 3% and B3: 6% w/w) and three straw amendments (S1: 1%, S2: 3% and S3: 6% w/w), under two moisture levels (M1: 40% water holding capacity (WHC) and M2: 70% WHC). The straw and biochar had contrasting effects on soil physiochemical properties and physiology of tomato seedlings. The B1 treatment significantly increased the soil urease activity (15%) and decreased the activity of dehydrogenase and beta glucosidase enzymes (67% and 56%), as compared to the S1 treatment, especially for the high moisture condition. Biochar significantly improved shoot and root dry weights, biomass and altered chlorophyll contents. Plant antioxidants, superoxide dismutase (SOD), Peroxidase (POD) activities and malondialdehyde (MDA) were significantly decreased in biochar treatments, however, an increasing trend was observed for straw treatments. The current findings suggest that application of high amount of biochar (6%) or low amount of straw (1%) would be a reasonable management practice in semi-arid regions to improve soil physiochemical properties and the physiology of tomato seedlings.

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