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Effects of long-term fertilization with different substitution ratios of organic fertilizer on paddy soil 认领 引用 被引量：52
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作者 Weifeng SONG Aiping SHU +9 位作者 Jiai LIU Wenchong SHI Mingcong LI Wenxue ZHANG Zuzhang LI Guangrong LIU Fusheng YUAN Shuxin ZHANG Zengbing LIU Zheng GAO 《Pedosphere》 SCIE CAS CSCD 2022年第4期637-648,共12页
In recent years,the abuse of chemical fertilizers has caused numerous environmental problems,such as soil acidification and compaction.Replacing chemical fertilizers with organic fertilizers can effectively alleviate ... In recent years,the abuse of chemical fertilizers has caused numerous environmental problems,such as soil acidification and compaction.Replacing chemical fertilizers with organic fertilizers can effectively alleviate these problems.However,the effects of alternative organic fertilizers remain unclear.To explore the effects of organic fertilizer substitution on rice yield and paddy soil physicochemical properties and bacterial community structure,we conducted a 5-year experiment using different proportions of organic fertilizer substitution in a double-cropping rice field in Jiangxi,China.Our results showed that replacing chemical fertilizers with organic fertilizers can reduce soil acidification,increase soil organic matter content,nutrient contents,and enzyme activities,improve soil physicochemical properties and microbial community,and enhance soil metabolism.Appropriate organic substitution also had positive effects on rice production.These findings enhance our understanding of the effects of different alternative organic fertilization methods and have important theoretical significance for the promotion of the use of organic fertilizers in the future. 展开更多
关键词 bacterial community double-cropping rice organic matter rice yield soil acidification,soil property
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Rhizosphere core microbes are associated with efficient potassium utilization in field-grown wheat 认领 引用
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作者 Fengye Pan Wenchong Shi +9 位作者 Yu Wang Yingdi Zhu Chenxi Kou Jiaqi Liang Xiaocun Zhang Xiaoliang Wu Mingcong Li Bo Zhou Fanmei Kong Zheng Gao 《Soil Ecology Letters》 CAS CSCD 2026年第1期215-230,共16页
Soil microbes are of vital importance in crop function and nutrient utilization.However,the core mechanisms and contributions of rhizosphere microbiota for potassium-efficient wheat varieties remain ambiguous.This art... Soil microbes are of vital importance in crop function and nutrient utilization.However,the core mechanisms and contributions of rhizosphere microbiota for potassium-efficient wheat varieties remain ambiguous.This article examined 24 wheat varieties,by which significant differences in rhizosphere microbial diversity and structure between potassium-efficient and-inefficient groups have been observed.It is revealed that both bacterial and fungal communities have strong correlations with wheat potassium utilization efficiency(KUE).Furthermore,this correlation is more bound up with the abundant taxa than the rare taxa.Notably,bacterial communities are demonstrated to have more substantial associations with yield and KUE compared to its counterpart,i.e.,fungal and archaeal communities.The potassium-efficient group exhibited a more complex microbial network,where bacteria occupied a more prominent ecological niche than those of fungi and archaea.Core microorganisms,primarily Bacillus and Pseudobacillus,enhance wheat KUE directly or indirectly by shaping key microbial consortium and soil microbial communities.The experiment showed that soil microorganisms make a difference in the growth and nutrient accumulation of wheat.And core microorganisms significantly facilitate wheat growth and reinforce efficient potassium nutrient absorption and utilization.This study highlighted the rhizosphere microbiome differences among wheat varieties with different potassium utilization capacities,identified and characterized the core microorganisms in the rhizosphere of potassium-efficient wheat,and revealed their potential to improve wheat potassium nutrient uptake and utilization.These findings provide valuable insights for developing wheat breeding strategies aiming at enhancing potassium utilization. 展开更多
关键词 wheat potassium rhizosphere core microorganisms nutrient use efficiency
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