检索结果-南通市图书馆

Response of Bacterial Community and Enzyme Activity of greenhouse tomato under Different Irrigation Systems

Phyton-International Journal of Experimental Botany 2024年第7期93卷 1543-1568页

作者： Haijian Yang Mingzhi Zhang Na Xiao Yuan Li Faculty of Engineering Huanghe Science and Technology UniversityZhengzhou450063China Northwest Land and Resources Research Center Shaanxi Normal UniversityXi’an710119China

The micro-sprinkler irrigation mulched(MSM)has been suggested as a novel water-saving approach in con-trolled environment ***,the effects of microbial community structure and enzyme activity in the rhizosphere soil on crop growth under MSM remain *** study conducted a randomized experimen-tal design using greenhouse tomatoes to investigate changes in bacterial community structure and enzyme activity in rhizosphere soil under different irrigation frequencies(F)and amounts(I)of ***ﬁndings revealed that with the increase of F or I,The total count of soil bacteria in tomatoesﬁrst rose and then fell in terms of Opera-tional Taxonomic Units(OTUs)classiﬁ*** to other F,the most abundance of nitrogen and phos-phorus metabolism genes and enzyme activities were observed with a 5-day ***,the diversity of soil bacterial community structure initially rose before eventually declining with the increase of the *** 1.00 Epan(cumulative evaporation of a 20 cm standard pan)under MSM helped boost the abundance of nitrogen and phosphorus metabolism functional genes in soil bacteria,ensuring higher enzyme activities related to nitro-gen,carbon,and phosphorus metabolism in the rhizosphere soil of ***’yield initially rose before eventually declining with the increase in F or I,whereas I had a more signiﬁcant effect on yield.A 1.00%increase in I yielded a minimum of 39.24%increase in tomato *** study showed a positive correlation between soil bacterial community,soil enzyme activity,and greenhouse tomato yield under *** the results comprehensively,the combined irrigation mode of F of 5 d and I of 1.00 Epan was recommended for greenhouse tomatoes under *** conclusion provides theoretical support for water-saving practices and yield improve-ment in facility agriculture,especially tomato cultivation.

关键词： greenhouse tomato yield bacterial community enzyme activity model

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Translocation and recovery of 15N-labeled N derived from the foliar uptake of 15NH3 by the greenhouse tomato（Lycopersicon esculentum Mill.）

引用

Journal of Integrative Agriculture 2020年第3期19卷 859-865页

作者： HUANG Hui-ying LI Huan XIANG Dan LIU Qing LI Fei LIANG Bin College of Resources and Environmental Sciences Qingdao Agricultural University

In order to completely evaluate ammonia emission from greenhouse vegetable fields,crop canopy absorption should not be *** foliar uptake of NH3 applied at two growth stages and the subsequent 15N-labeled N translocation to other plant components were investigated under greenhouse conditions using chambers covered with the soil of a tomato *** comprised three NH3-N application rates(70,140,and 210 mg/plot) using 15N-labeled ammonium *** were harvested immediately after exposure for 24 h,and the total N concentrations and 15N/14 N ratios were *** increased NH3 concentration,total 15NH3-N absorption increased considerably,whereas the applied 15NH3-N uptake decreased *** tomato plants absorbed 33-38% and 24-31% of the 15NH3-N generated at the anthesis and fruit growth stages,respectively.A total of 71-80% of the recovered NH3 was observed in the leaves and 20-30% of the recovered NH3 was remobilized to other *** them,an average of 10% of the absorbed 15NH3-N was transferred into the tomato *** these results indicated the potential of the tested tomatoes for the foliar uptake of atmospheric 15NH3 and the distribution of 15N-labeled vegetative N among different plant *** results are of great importance for the complete evaluation of nitrogen use efficiency in the greenhouse tomato fields.

关键词： greenhouse tomato 15N foliar ammonia absorption NH3 canopy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

CFD simulation of sucrose flow field in the stem of greenhouse tomato seedling

引用

International Journal of Agricultural and Biological Engineering 2022年第1期15卷 111-115页

作者： Jiheng Ni Jingtao Dong Ikram Ullah Hanping Mao School of Agricultural Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina

Sucrose is the main constituent of assimilation transport from source to *** order to study the transport mechanism of sucrose,the sucrose at stem was taken as a research object and the sucrose flow field in tomato stem was analyzed using CFD ANSYS FLUENT *** results showed that the sucrose pressure distribution was lower at bottom node and higher at middle *** velocity of sucrose at different nodes was higher at the bottom node and lower at middle node and assimilation flow direction of the first,second,and third leaf from the bottom was towards the *** result of verification experiment showed that sucrose content measured at different nodes was higher at middle node than that of bottom *** of this study confirmed that ANASYS FLUENT can better simulate sucrose migration in greenhouse tomato *** study provides a new method for studying the partitioning mechanism of tomato assimilates in greenhouse.

关键词： greenhouse tomato sucrose flow field computational fluent dynamic rule of distribution

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of Bacillus subtilis and Pseudomonas fluorescens on Growth of greenhouse tomato and Rhizosphere Microbial Community

引用

Journal of Northeast Agricultural University(English Edition) 2015年第3期22卷 32-42页

作者： Ge Xiao-ying He Chun-e Li Tao Ouyang Zhu Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences (CAS) University of Chinese Academy of Sciences

Bacillus subtilis （B. subtilis） and Pseudomonas fluorescens （P. fluorescens） are two of the most important plant growth promoting rhizobacteria （PGPR） in agriculture. An in situ trial was conducted on greenhouse tomato （Lycopersicum esculentum Mill.） to examine the effect of two bacterial strains, Bacillus subtilis （CGMCC 1.3343） and Pseudomonas fluorescens （CGMCC 1.1802）, on tomato growth, gray mold disease control, catabolic and genetic microbial features of indigenous rhizosphere bacteria under lownitrogen conditions. A commercial inoculant （ETS） was also tested as a comparison. Both B. subtilis and P. fluorescens promoted growth and biomass of seedlings, while only B. subtilis was efficient in reducing gray mold incidence in greenhouse tomato. The two bacterial strains could colonization in tomato rhizosphere soil at the end of experiment （10 days after the last inoculation）. Different AWCD trends and DGGE patterns were got in different bacterial treatments; however, analyses of microbial diversities showed that indigenous soil microbes did not seem to have significant differences at either the catabolic or genetic level among treatments. ETS, as a commercial microbial agent, promoted plant growth and gave a higher microbial diversity in rhizosphere soil.

关键词： greenhouse tomato Bacillus subtilis Pseudomonasfluorescens qPCR biolog PCR-DGGE

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of Oyster Shell Soil Amendmenton Fruit Auality and Soil Chemical Properties in greenhouse tomato Acidic Soils

引用

Agricultural Science & Technology 2016年第9期17卷 2096-2098,2102页

作者： Yong LI Zhongxing YU Yao SUN Agricultural Technology Promotion Center of Yantai Yantai 265100China Soil and Fertilizer Station Agricultural Technology Promotion Center of YantaiYantai 264001China

[Objective]The aim was to explore the feasibility of applying oyster shell soil amendment for tomato production in order to determine proper quantity of the soil conditional.[Method]Field tests were performed to research effects of the soil conditioner on tomato yield,quality and soil p H.[Result]The results showed that tomato yield increased in the treatment groups with oyster shell soil *** group SC50 increased the most by 16.5%than the control *** on normal fertilization,tomato growth was promoted by the soil amendment,and per tomato weight and lycopene content both improved during peak-fruiting ***,soil p H value was enhanced by the soil amendment also.[Conclusion]It can be concluded that the effect was the best when soil conditioner was applied at 750 kg/hm2.

关键词： Oyster shell soil amendment greenhouse tomato Soil amelioration

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evaluation of tomato fruit quality response to water and nitrogen management under alternate partial root-zone irrigation

引用

International Journal of Agricultural and Biological Engineering 2017年第5期10卷 85-94页

作者： Yang Hui Cao Hongxia Hao Xinmei Guo Lijie Li Hongzheng Wu Xuanyi Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F UniversityYanglingShaanxi 712100China Center for Agricultural Water Research in China China Agricultural UniversityBeijing 100083China

A pot experiment was conducted to investigate the effects of different water and nitrogen supply amounts on the comprehensive assessment of tomato fruit quality and root growth parameters under alternate partial root-zone *** upper irrigation limitations(i.e.70%(W1),80%(W2)and 90%(W3)of field capacity,respectively)and three N-fertilizer levels(i.e.0.18(N1),0.30(N2)and 0.42(N3)g/kg soil,respectively)were arranged with a randomized complete block design,and alternate partial root-zone irrigation method was *** showed that fruit yields under deficit irrigation(W1 and W2)were decreased by 6.9%and 2.0%respectively compared with W3 under N1 *** of tomato under W1N1 and W1N2 combinations were also reduced by 10.3%and 7.2%,respectively compared with W1N3 *** dry weight,root length,root surface area and root volume were all increased in W1N2 *** to two-way ANOVA,the root parameters except root dry weight,were extremely sensitive to water,nitrogen and the cross effect of the two ***(total soluble solids),SS(soluble sugars)and OA(organic acid)in the fruits increased with the decrease in irrigation water,OA and NC reduced with decreasing amount of ***,within an appropriate range,as more irrigation water and nitrogen were applied,the higher VC(vitamin C)and lycopene contents were identified in the ***,the combinational evaluation method(*** method and gray relational analysis)showed that W2N2 ranked highest in comprehensive fruit ***,considering the tradeoff between fruit comprehensive quality and yields,upper irrigation limitation of 80%θf and N-fertilizer of 0.30 g/kg soil with alternate partial root-zone irrigation was the optimal cultivation strategy for the greenhouse tomato in autumn-winter season in northwest China.

关键词： greenhouse tomato alternate partial root-zone irrigation water and nitrogen root growth comprehensive fruit quality

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Influence of Different Root Temperature Treatment on Microstructure of tomato Leaves

引用

Agricultural Science & Technology 2016年第8期17卷 1834-1837,1841页

作者：韩亚平李亚灵雷振宏赵丹贾学思山西振东道地药材开发有限公司山西长治047100 山西农业大学园艺学院山西太谷030801

Following the study on effects of different root temperature treatments on growth and stomata of tomato plants under high temperature in summer, the influence of different root temperature treatments on microstructure of tomato leaves was studied in depth in this paper. The tomato plants were cultured with circulating nutrient solutions. Under three different root temperature treatments [（23±1）, （28±1）, （33±1）℃], the microstructure of tomato leaves were observed and measured with paraffin section method. The results showed that with the increase of root temperature, the thickness, palisade tissue thickness, spongy tissue thickness of tomato leaves all decreased, but the epidermis thickness and palisade tissue thickness to spongy tissue thickness ratio increased. Therefore, increased root temperature led to drought stress to tomato plants, and in order to adapt to the hot and drought environment, tomato plants changed their structural characteristics.

关键词： Summer heat greenhouse tomato Root temperature Leaf Microstructure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of Different Application Amounts of Potassium Fulvate on Yield and Quality of tomato and Soil Physical and Chemical Properties

引用

Agricultural Science & Technology 2017年第12期18卷 2392-2395,2400页

作者：高伟李明悦杨军高贤彪冯海娟张善平郑春莲天津市农业资源与环境研究所天津300192 金正大生态工程集团股份有限公司养分资源高效开发与综合利用国家重点实验室山东临沭276700 河北省农林科学院旱作农业研究所河北衡水053000

This study was conducted to study the optimum dosage of potassium ful- vate （PF） on greenhouse tomato, the effects of different amounts of PF on yield and quality of greenhouse tomato and soil physical and chemical properties were investigated by a field plot experiment. The results showed that the bottom applica- tion of PF increased tomato yield, plant dry matter weight and root dry matter weight by 14.0%, 14.4 and 50.6%, respectively; Vc and soluble sugar content of tomato increased by 1＆5% and 10.0%, respectively; and soil bulk density de- creased by 3.6%, and CEC increased by 5.0%. All the indexes increased with the increase of PF application amount, and reached the maximum value when the PF application rate was 4 500 kg/hm2. In consideration of the cost of fertilizer and all indexes, the optimum dosaqe of PF fertilizer was 4 500 kg/hm2.

关键词： greenhouse tomato Potassium fulvate (PF) Yield Quality Soil physicaland chemical properties

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：