Effects of different coated slow-release calcium peroxide on microbial characteristics of gleyed paddy soil

doi:10.13287/j.1001-9332.202005.023

Abstract

Abstract: To explore the effects of different coated slow-release calcium peroxide on soil microbial characteristics in gleyed paddy field, we set seven treatments by simulation test in a greenhouse, including CK (none calcium peroxide), calcium peroxide powder, calcium peroxide particle and other four coated slow-release calcium peroxide treatments. Samples were collected in same tillering stage of early season rice. The results showed that all the applications of calcium peroxide could improve the concentrations of active soil organic carbon, soil available nutrients, soil microbial biomass, culturable microorganism population, as well as soil enzyme activity. The coated slow-release calcium peroxide had stronger effects than calcium peroxide particles and calcium peroxide powder. The calcium peroxide coated by ethyl cellulose was the most effective, which enhanced soil active organic carbon, soil microbial biomass carbon, nitrogen, phosphorus by 19.4%, 11.4%, 121.5% and 127.2%, soil alkaline hydrolysis nitrogen and available phosphorus by 4.0% and 45.5%, soil culturable bacteria and culturable microorganism population by 137.3% and 113.7%, fungi and actinomyces number were increased by 33.6% and 44.7%. The enzyme activities of invertase, phosphatase, urease as well as catalase were increased by 92.4%, 91.8%, 112.5% and 17.1%, respectively. The results could provide reference for improving gleyed paddy field with coated calcium peroxide.

Key words: slow-release calcium peroxide, latent environment, soil nutrient availability, microbial characteristics

HU Ke-xin, DONG Chun-hua, LUO Zun-chang, WANG Ling-ling, ZHOU Xuan, HONG Xi, XIE Yi, CHU Fei. Effects of different coated slow-release calcium peroxide on microbial characteristics of gleyed paddy soil[J]. Chinese Journal of Applied Ecology, 2020, 31(5): 1467-1475.

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