期刊论文

中文

环境科学

0250-3301

2024

45

3

1793-1802

10.13227/j.hjkx.202303212

2021GK5003:湖南省企业科技特派员计划项目 41907126:国家自然科学基金

本校为第一机构

为研究谷壳灰制备硅肥对水稻不同生育期土壤重金属镉（Cd）和砷（As）生物有效性、酶活性、微生物群落结构和糙米重金属含量的影响，开展水稻盆栽试验.结果表明，施用0.1%～1.0%谷壳灰硅肥能提高土壤pH值0.04～0.24个单位，有效硅含量44.2%～97.5%，也能降低土壤有效态Cd含量16.2%～21.4%，有效态As含量16.0%～24.9%；随施加量的增大各生育期土壤酶活性增大，其中蔗糖酶活性显著增大6.3%～145.7%，脱氢酶活性显著增大6.7%～224.1%；分析土壤成熟期微生物群落结构显示，施用谷壳灰硅肥不影响微生物α-多样性，但对微生物β-多样性产生显著影响，促进微生物生长，维持群落结构稳定性；随施加量的增...

A rice pot experiment was conducted to identify the effect of silica fertilizer prepared from husk ash on the soil bioavailability of cadmium (Cd) and arsenic (As), enzyme activities, microbial community structure, and heavy metal content in brown rice at different growth stages. The results showed that the application of 0.1%-1.0% silica fertilizer-husk ash increased the pH value of soil by 0.04-0.24 units and the content of soil available silicon by 44.2%-97.5%. It also decreased the content of available Cd and available As by 16.2%-21.4% and...