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第四届国际计算机与计算技术在农业中的应用研讨会

作者： Xiaohui Yang Yuxiang Huang Shuqin Li Sheng Huang College of Information Engineering Northwest A&F University College of Mechanical and Electronic Engineering Northwest A&F University

Fertilizer efficiency directly affects the production of continuous cropping greenhouse *** analyzing the fertilizer efficiency is of great significance in providing decision-making support for fertilization of greenhouse *** establishing the DEA models of continuous cropping greenhouse cucumber and taking existing data samples as study objects,the problems of fertilizer efficiency in traditional fertilization,target yield fertilization and mathematical model fertilization were *** the technical efficiency,pure technical efficiency,scale efficiency and redundancy rates of the three types of fertilization methods have been obtained by analyzing the relationship of three inputs(N,P

关键词： greenhouse cucumber Fertilization Efficiency DEA method

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Larval development and voracity of Eupeodes americanus (Diptera: Syrphidae): comparison of the focal prey Aphis gossypi (Hemiptera: Aphididae) and the banker prey Rhopalosiphum padi (Hemiptera: Aphididae)

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Insect Science 2024年第2期31卷 575-586页

作者： Arlette Fauteux Antonio Onofre Soares Eric Lucas Laboratoire de lutte biologique Departement des sciences biologiquesUniversite du Quebec a Montreal(UQAM)MontrealQuebecCanada Faculty of Science and Technology Center for Ecology Evolution and Environmental ChangesAzorean Biodiversity Group(cE3c-ABG)&CHANGE-Global Change and Sustainability InstitutePonta DelgadaPortugal

Unlike European species,the potential of Nearctic syrphids as biological control agents is still poorly ***,the American hoverfly,Eupeodes americanus(Wiedemann),has recently demonstrated promising traits as a biocontrol agent,notably against the foxglove aphid,Aulacorthum solani Kaltenbach,on *** present study aims to extend our knowledge of the American hoverfly by evaluating its potential as a biocontrol agent in a banker plant system against the melon aphid,Aphis gossypi Glover,in a greenhouse cucumber *** preimaginal development and voracity of *** were compared when preying upon the focal prey/pest(***)or the banker prey(bird cherry-oat aphid,Rhopalosiphum padi L.)by daily observations of larvae from egg to *** development time,survival rate,and occurrence of deformation were similar on both prey *** weight of third instar and pupae,however,was higher for larvae that fed on the banker *** ad libitum voracity of the syrphid larvae was generally very high and did not significantly differ between prey species,except for the third-instar larvae which consumed more focal *** suggest that a banker plant system involving the bird cherry-oat aphid may be a promising tactic for utilizing *** for melon aphid biocontrol.

关键词： american hoverfly banker plant system biological control bird cherry-oat aphid greenhouse cucumber melon aphid

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Effects of Different Heating Systems on cucumber Yield in greenhouses and Cost and Gas Volume Consumed in Varamin Region

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Journal of Agricultural Science and Technology(B) 2020年第6期10卷 341-349页

作者： Majid Rashidi Karim Arabsalmani Behnam Zand greenhouse Cultivation Research Department Tehran Agricultural and Natural Resources Research and Education CenterAgricultural ResearchEducation and Extension Organization(AREEO)VaraminIran Seed and Plant Improvement Research Department Tehran Agricultural and Natural Resources Research and Education CenterAgricultural ResearchEducation and Extension Organization(AREEO)VaraminIran

This research was conducted to investigate the effects of three heating systems on cucumber yield,and cost and gas volume consumed in greenhouses located in Varamin region,Tehran province,*** heating systems used in the greenhouses are:central heating system(including boiler+hot water pipes),gas heater system(including double-walled tank+blower)and traditional furnace system(including ignition chamber+torch+pipes carrying a mixture of hot air and flammable gases).The study was carried out for two consecutive cucumber cultivation periods from January to *** values of crop yield,volume and cost of gas consumed were determined separately for each heating *** of the study indicated that the central heating system with the highest crop yield(295 t/ha),and the lowest volume(100,000 m^(3)/ha)and cost(840 USD/ha)of gas consumed was the best and most suitable heating system for greenhouses producing cucumbers in Varamin region and other regions with the same and similar climate as well as regions with active greenhouses in the cold season.

关键词： greenhouse heating systems greenhouse cucumber crop yield gas consumed Varamin Iran

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Effect of Different Heating Systems in cucumber Production greenhouses in Varamin Region on Crop Yield, Volume and Cost of Gas Consumed

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Journal of Environmental Science and Engineering(B) 2020年第5期9卷 206-214页

作者： Majid Rashidi greenhouse Cultivation Research Department Tehran Agricultural and Natural Resources Research and Education CenterAgricultural ResearchEducation and Extension Organization(AREEO)VaraminIran

This research was conducted to study the effect of different heating systems in cucumber production greenhouses in Varamin region,Tehran province,Iran on crop yield,volume and cost of gas *** types of conventional heating systems,namely the central heating system(including boiler+hot water pipes),gas heater system(including double-walled tank+blower)and traditional furnace system(including ignition chamber+torch+pipes carrying a mixture of hot air and flammable gases)were studied during two consecutive periods of greenhouse cucumber cultivation in the cold season(from January to June),and average values of crop yield,volume and cost of gas consumed were determined *** of the study indicated that the central heating system with the highest crop yield(295 tha^-1),and the lowest volume(100,000 m3ha^-1)and cost(210,000,000 Rialsha^-1)of gas consumed was the best and most suitable heating system for greenhouses producing cucumbers in Varamin region and other regions with the same and similar climate as well as regions with active greenhouses in the cold season.

关键词： greenhouse heating systems greenhouse cucumber crop yield gas consumed Varamin Iran

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