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Effects of Continuous Irrigation of Biogas Slurry on Forms and Biological Availability of Pb in Soil of a tea garden

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Agricultural Science & Technology 2017年第4期18卷 615-618页

作者：刘术新李赛慧丁枫华丽水职业技术学院浙江丽水323000 丽水市莲都区土肥植保站浙江丽水323000 丽水学院浙江丽水323000

Through indoor culture experiments, the effects of continuous irrigation of biogas slurry on the forms and biological availability of Pb in soil of a tea garden were studied. The results show that continuous irrigation of biogas slurry could change the forms of Pb in the soil, and exchangeable Pb, Pb bonded to iron and manganese oxides, and Pb bonded to carbonates transformed to Pb bonded to or- ganic matter and residual Pb in the soil. Among various forms of Pb in the soil, the content of residual Pb was the highest in the soil irrigated with biogas slurry contin- uously in various treatments, accounting for 54.56%, 60.00% and 60.70% in the treatments T1, T2 and T3 respectively. Compared with the CK, the application of bio- gas slurry could decrease the biological activity and biological availability of Pb in the soil obviously, and the reduction of the biological activity was 21.26%-22.83%. In a word, the application of biogas slurry in soil of the tea garden could inhibit the biological activity and biological availability of Pb.

关键词： Biogas slurry tea garden Pb Form Biological availability

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Effects of Different Farming Methods and Their Effects on Soil Physicochemical Properties of Guilin Maojian tea gardens

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Agricultural Biotechnology 2018年第5期7卷 186-190页

作者： Lingyun ZHANG Shuyi LI Sisi Qin Changjian JIANG Qifa LONG Min SU Chusheng LIU Qianhua WU Guangxi Guilin tea Research Institute Guilin 541004China

In order to further optimize the cultivation and agronomic technology of Guilin Maojian tea gardens, the effects, efficiencies and costs of different farming methods and their effects on the physiochemical properties of tea garden soil were studied through the modification of the test sites with the non-farming land as the control. The results showed that human farming, mini-tiller farming and crawler tractor farming could improve the physical and chemical properties of soil. After farming, the soil had good water retention but low moisture content compared to the control group, while the soil bulk density and hardness value were significantly lower than those of the control, and the porosity of soil was significantly higher than that of contrast. With the passage of time, soil bulk density and hardness value gradually increased after farming, while the porosity of soil decreased gradually. There were great differences in the effects, efficiencies and costs of different farming methods. Crawler tractor had the best and most stable farming effect, and the operation efficiency was 10 times that of human farming while the cost was only 0.39 times of human farming. Therefore, it was feasible to adopt mini-tiller or crawler tractor to carry out mechanical farming of Guilin Maojian tea garden, which provided theoretical references for the soil property improvement using mechanical farming and was favorable for promoting the popularization of farming machines and the acceleration of mechanization of tea gardens. But for tea plantations that are intended to be mechanized, apart from the mechanical and technical personnel to be configured in place, the site conditions, planting modes and mechanical way reservation of tea garden should be planned accordingly. It is recommended to select flat or gentle slope for reclamation, and preference is given to non-sexual tea tree varieties with big line spacing over 180 cm long. Moreover, the main road construction should be more than

关键词： Guilin Maojian tea tea garden Farming methods Soil Physical and chemical properties

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Soil Acidification of Alfisols as Influenced by tea Cultivation in Eastern China

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Pedosphere 2010年第6期20卷 799-806页

作者： WANG Hui XU Ren-Kou WANG Ning LI Xing-Hui Institute of tea Science Nanjing Agriculture University Nanjing 210095 (China) State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 (China) College of Food and Bioengineering Henan University of Science and Technology Luoyang 471003 (China)

Soil acidification is an important process in land degradation around the world as well as in *** of Alfisols was investigated in the tea gardens with various years of tea cultivation in the eastern *** of tea plants caused soil acidification and soil acidity increased with the increase of tea cultivation *** pH of composite samples from cultivated layers decreased by 1.37,1.62 and 1.85,respectively,after 13,34 and 54 years of tea plantation,as compared to the surface soil obtained from the unused *** acidification rates at early stages of tea cultivation were found to be higher than those at the later *** acidification rate for the period of 0-13 years was as high as 4.40 kmol H + ha ?1 year ?1 for the cultivated layer *** acidification induced the decrease of soil exchangeable base cations and base cation saturation and thus increased the soil exchangeable *** acidification also caused the decrease of soil cation exchange capacity,especially for the 54-year-old tea *** acidification induced by tea plantation also led to the increase of soil exchangeable Al and soluble Al,which was responsible for the Al toxicity to plants.

关键词： aluminum base cations cation exchange capacity soil exchangeable acidity tea garden

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INTERCROPPING tea PLANTATIONS WITH SOYBEAN AND RAPESEED ENHANCES NITROGEN FIXATION THROUGH SHIFTS IN SOIL MICROBIAL COMMUNITIES

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Frontiers of Agricultural Science and Engineering 2022年第3期9卷 344-355页

作者： Yongjia ZHONG Lini LIANG Ruineng XU Hanyu XU Lili SUN Hong LIAO Root Biology Center College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China.

Intercropping with eco-friendly crops is a well-known strategy for improving agriculture sustainability with benefits throughout the soil community,though the range of crop impacts on soil microbiota and extent of feedbacks to crops remain largely *** study evaluated the impacts of different intercropping systems on soil bacterial community composition,diversity,and potential functions in tea *** systems were found to be significantly influenced soil *** the three tested intercropping systems(tea-soybean,tea-rapeseed and tea-soybean-rapeseed),the teasoybean-rapeseed intercropping system had the most dramatic influence on soil microbiota,with increases in richness accompanied by shifts in the structure of tea garden soil bacterial ***,relative abundance of potentially beneficial bacteria associated with essential mineral nutrient cycling increased significantly in the tea-soybean-rapeseed intercropping *** addition,soil microbial functions related to nutrient cycling functions were significantly *** was in accordance with increasing relative abundance of nitrogen cycling bacteria,including Burkholderia *** Rhodanobacter *** on these results,it is proposed that intercropping tea plantation with soybean and rapeseed may benefit soil microbiota,and thereby promises to be an important strategy for improving soil health in ecologically sound tea production systems.

关键词： intercropping rapeseed soil microbe soybean tea garden

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