Garden soil test was used to study the effects of different cultivation time of garden plants on soil chemical properties and soil enzyme activities in the garden. The results showed that with the extension of cultiva...Garden soil test was used to study the effects of different cultivation time of garden plants on soil chemical properties and soil enzyme activities in the garden. The results showed that with the extension of cultivation time,the activity of protease,urease and catalase in Ginkgo biloba soil increased significantly,while the activity of protease in other garden plants showed a certain degree of decline,and the activity of urease increased significantly in the soil cultivated Lagerstroemia indica for over 3 years. However,in the soil cultivated the garden plants for less than 3 years,the difference in the activity of urease was relatively small,and the difference in the activity of catalase was relatively significant.展开更多
[Objectives]This study was conducted to investigate the effects of artificially cultured Eisenia foetida and wild earthworms ( Pheretima sp.) on the changes of microbial populations in forest soil in different seasons...[Objectives]This study was conducted to investigate the effects of artificially cultured Eisenia foetida and wild earthworms ( Pheretima sp.) on the changes of microbial populations in forest soil in different seasons.[Methods]Artificially cultured E.foetida and wild earthworms were introduced to forest soil,and changes in the number of microbial populations under earthworm-microbe interaction were investigated in different seasons by tracking observation.The effects of earthworm activities on the number of different microbial populations were discussed also.[Results]Different microbial populations all increased in the soil to different degrees after the introduction of earthworms.The effects of the wild earthworms on the changes in bacteria,actinomycetes and fungi in the soil were different from those of artificially cultivated earthworms to certain degrees.[Conclusions]This study provides a theoretical basis for organic agriculture that relies on the decomposition of organic matter to release nutrients.展开更多
[ Objective] This study aimed to investigate the effects of Cu contamination in soils on GSH-Px （ glutathione peroxidase） activity of earthworms （ Eisenia fetida）. [ Method ] By artificial soil contamination metho...[ Objective] This study aimed to investigate the effects of Cu contamination in soils on GSH-Px （ glutathione peroxidase） activity of earthworms （ Eisenia fetida）. [ Method ] By artificial soil contamination method, changes in GSH-Px activity of earthworms under different Cu concentrations were investigated [ Result ] In the early exposure period, low-concentration Cu stress activated GSH-Px activity of earthworms to a certain extent; with the extension of extxqsure time and increase of Cu concentration, GSH-Px activity of earthworms showed a decreasing trend; however, under high-concentration Cu stress, there was no remarkable reg- ularity in the reduction of GSH-Px activity of earthworms. [ Conclusion] This study laid a solid foundation for further revealing the synergistic mechanism of antioxidant enzymes of earthworms.展开更多
基金Supported by the Scientific Research Project of the Education Department of Sichuan(15ZA035)
文摘Garden soil test was used to study the effects of different cultivation time of garden plants on soil chemical properties and soil enzyme activities in the garden. The results showed that with the extension of cultivation time,the activity of protease,urease and catalase in Ginkgo biloba soil increased significantly,while the activity of protease in other garden plants showed a certain degree of decline,and the activity of urease increased significantly in the soil cultivated Lagerstroemia indica for over 3 years. However,in the soil cultivated the garden plants for less than 3 years,the difference in the activity of urease was relatively small,and the difference in the activity of catalase was relatively significant.
基金Supported by Scientific Reserch Fund of Sichuan Provincial Education Department in 2015(15ZA0335)
文摘[Objectives]This study was conducted to investigate the effects of artificially cultured Eisenia foetida and wild earthworms ( Pheretima sp.) on the changes of microbial populations in forest soil in different seasons.[Methods]Artificially cultured E.foetida and wild earthworms were introduced to forest soil,and changes in the number of microbial populations under earthworm-microbe interaction were investigated in different seasons by tracking observation.The effects of earthworm activities on the number of different microbial populations were discussed also.[Results]Different microbial populations all increased in the soil to different degrees after the introduction of earthworms.The effects of the wild earthworms on the changes in bacteria,actinomycetes and fungi in the soil were different from those of artificially cultivated earthworms to certain degrees.[Conclusions]This study provides a theoretical basis for organic agriculture that relies on the decomposition of organic matter to release nutrients.
基金Supported by Scientific Research Project of Sichuan Provincial Education De partment(15ZA0335)
文摘[ Objective] This study aimed to investigate the effects of Cu contamination in soils on GSH-Px （ glutathione peroxidase） activity of earthworms （ Eisenia fetida）. [ Method ] By artificial soil contamination method, changes in GSH-Px activity of earthworms under different Cu concentrations were investigated [ Result ] In the early exposure period, low-concentration Cu stress activated GSH-Px activity of earthworms to a certain extent; with the extension of extxqsure time and increase of Cu concentration, GSH-Px activity of earthworms showed a decreasing trend; however, under high-concentration Cu stress, there was no remarkable reg- ularity in the reduction of GSH-Px activity of earthworms. [ Conclusion] This study laid a solid foundation for further revealing the synergistic mechanism of antioxidant enzymes of earthworms.
