污泥基营养激励素对番茄品质及土壤性质的影响

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摘要为探究污泥基营养激励素的施用对作物品质和土壤性质的影响,本研究设置4种施肥类型:不施肥组(CK)､施加化肥组(HF)､叶面喷施污泥基营养激励素组(F_CJS)､土壤表面施加污泥基营养激励素组(S_CJS),对比分析污泥基营养激励素对微型汤姆番茄口感风味与营养品质､土壤基本理化性质以及土壤微生物群落结构的影响.结果表明,与HF相比,F_CJS可以增加微型汤姆番茄果实中可溶性糖和可溶性蛋白含量,S_CJS可提高维生素C含量,降低可滴定酸和硝酸盐含量,从而提高糖酸比值,改善番茄果实的口感风味与营养品质.S_CJS处理后的土壤有机质(SOM)含量显著高于HF组,硝态氮含量远低于HF组.与CK相比,S_CJS提高了土壤中参与氮循环的微生物丰度,同时其中参与碳循环的微生物丰度也约为HF组的2倍,污泥基营养激励素的施加提高了土壤微生物群落活性.此外,对比CK和HF,叶施和土施污泥基营养激励素中Arthrobacter､Sphingomonas､Stretomyces､Skermanella和Massilia等土壤有益菌属的相对丰度均显著增加,MND1等致病菌丰度降低.土施污泥基营养激励素还可减少Terrimonas和Bradyrhizobium等反硝化细菌的相对丰度,污泥基营养激励素显著影响了微型汤姆番茄土壤微生物群落结构组成,对土壤质量的调节发挥正向作用,还具有降低土壤N₂O排放的潜力.

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	谭嘉怡
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	宋联
	王硕
	李激

关键词 ：污泥基营养激励素, 微型汤姆番茄, 营养品质, 土壤有机质, 土壤微生物群落结构

Abstract：In order to explore the effect of sewage sludge-derived biostimulants on the quality of the crop and soil, four fertilization groups were designed: non-fertilization (CK), chemical fertilizer (HF), spraying sewage sludge-derived biostimulants on foliage (F_CJS) and spraying sewage sludge-derived biostimulants on the surface of soil (S_CJS). The effects of sewage sludge-derived biostimulants on the flavor and nutritional quality of ‘Micro-Tom’ tomato, physicochemical properties and microbial community structure of the soil were analyzed. The experimental results showed that compared with HF group, F_CJS increased the soluble sugar and protein contents of the ‘Micro-Tom’ tomato, and S_CJS increased vitamin C content and reduced the amount of titratable acid and nitrate, thus the ratio of sugar and acid was raised to improve the flavor and nutritional quality of tomato. In addition, the content of soil organic matter (SOM) in S_CJS was significantly higher than that in HF, while nitrate content was much lower. Compared with CK, S_CJS increased the abundance of microorganisms involved in the nitrogen cycle, and the abundance of microorganisms involved in the carbon cycle was about twice as high as that of HF, indicated that the application of sewage sludge-derived biostimulants improved the activity of the soil microbial community. Moreover, comparing CK and HF group, the relative abundance of beneficial bacteria Arthrobacter､Sphingomonas､Stretomyces､Skermanella and Massilia significantly increased in F_CJS and S_CJS, conversely, the pathogenic bacteria MND 1correspondingly decreased. S_CJS can also reduce the relative abundance of denitrifying bacteria Terrimonas and Bradyrhizobium. The sewage sludge-derived biostimulants significantly affects the soil microbial community structure of ‘Micro-Tom’ tomato, playing a positive role in the regulation of soil quality, and further possesses the potential to reduce soil N₂O emission.

Key words： sewage sludge-derived biostimulants 'Micro-Tom'tomato nutritional quality soil organic matter soil microbial community structure

收稿日期: 2023-01-19

PACS:	X705
	X53

基金资助:江苏省政策引导类计划(国际科技合作/港澳台科技合作)专项资金资助项目(BZ2021030);无锡市科技创新创业资金资助项目(M20211003);江苏省碳达峰碳中和科技创新专项资金资助项目(BE2022303)

通讯作者: 李激,教授,liji@jiangnan.edu.c E-mail: liji@jiangnan.edu.c

作者简介: 谭嘉怡(1999-),女,江苏无锡人,江南大学硕士研究生,主要研究方向为废物资源化.6211405018@stu.jiangnan.edu.cn.

引用本文:

谭嘉怡, 郝家厚, 李羽志, 李左月, 蒋志坚, 宋联, 王硕, 李激. 污泥基营养激励素对番茄品质及土壤性质的影响[J]. 中国环境科学, 2023, 43(S1): 125-135. TAN Jia-yi, HAO Jia-hou, LI Yu-zhi, LI Zuo-yue, JIANG Zhi-jian, SONG Lian, WANG Shuo, LI Ji. Effect of sewage sludge-derived biostimulants on the quality of tomato and soil properties. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(S1): 125-135.

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