Bu ChongXing

Xiaomi (China)

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Weihong Luo

Gannan Medical University

You XiuNa

Shijiazhuang Academy of Agriculture and Forestry Sciences

Xiaohan Wang

Henan Agricultural University

Dai Jianfeng

First Affiliated Hospital of Soochow University

Xiaotao Ding

Ningbo University

Shengfei Zhang

University of Shanghai for Science and Technology

Ming Diao

Hainan Medical University

Rui Xu

Fudan University

Jianfeng Dai

Lanzhou University of Technology

C. Stanghellini

Wageningen University & Research

Cooperative Institutions

Shanghai Academy of Agricultural Sciences

Nanjing Agricultural University

Shanghai Institute of Technology

Chinese Academy of Sciences

Shanghai Jiao Tong University

Guizhou University

Yangzhou University

Ministry of Agriculture and Rural Affairs

Xinjiang Production and Construction Corps

Zhejiang University

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Selection of substrate for cultivation of Begonia semperflorens Link et Otto cv. Cocktail series.

Anhui Nongye Daxue xuebao (2009)

Zhou JingBo Huang Cheng-lin Bu ChongXing Yongkang Yao

In order to select the optimum planting substrate,four types of substrates(including M1(soil),M2(peat∶perlite 2∶1),M3(pottery grain),and M4(vermiculite∶slow-release fertilizer 25∶1) were used in this study.The growth indices(including plant height,crown diameter,biomass,root length etc.),flower trait index(including flower number) and contents of C,H,N and S were investigated for determination of the optimum substrate for Begonia semperflorens Link et Otto cv.Cocktail series,and the results are as follows:①Judging from the observation of growth stage of vegetation and reproduction,M2 was the best one for the increase of height,crown diameter,and floret number.②The measurement of wet and dry above and below-ground weight of Begonia semperflorens and root length showed that M2 was the best to increase the above-and below-ground biomass and root length.③Begonia semperflorens growing in M2 showed higher contents of C and S than in M1.The medium M2 is the optimum material for soilless culture of Begonia semperflorens from the point of appreciating characters and nutrient feature.

Begonia

Perlite

Vermiculite

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Simulation of the Development of Tomato in Greenhouse

Zhongguo nongye Kexue (2005)

Bu ChongXing

A simulation model for tomato development in greenhouse was developed based on the concept of physiological development time (PDT) and the photo-thermal reactions of tomato in greenhouse. The model was validated by independent experimental data from Shanghai and Nanjing. The results showed that the simulated results agreed well with the measured ones. The root mean squared error (RMSE) for germination, seedling, flowering, fruit setting, and harvest development stages was 0, 1, 1.87, 2.69 and 3 days, respectively. The prediction accuracy of this model is remarkably higher than that of the Growth Degree Day (GDD) based model (RMSE is 0, 7.91, 8.86, 13.58 and 12.59 days, respectively, for germination, seedling, flowering, fruit setting, and harvest development stages).

Mean absolute error

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A Study of Netted Melon Sand-cultured in Solar-greenhouse with Adding CO_2

Shenyang Nongye Daxue xuebao (2000)

Bu ChongXing

The concentration of CO_2 in the solar plastic greenhouse was greatly increased by lighting 96% alcohol before airing, the growth of a netted melon Xiyu 1 was significantly improved, 36.6% more yield and 51.4% more output value were obtained compared with the common sand--culture

Melon

Solar greenhouse

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Effect of a new tubbish soilless culture device on tomato planting

Shanghai nongye xuebao (2008)

Zheng Yi Bu ChongXing Huang Liang

The soil culture of tomato was used as a control,and the effects of different tubbish soil- less culture devices on tomato planting were studied.The result showed that a new tubbish soilless cul- ture device could make tomato plants grow much better,and significantly improve chlorophyll content and root activity of tomato plants,fruit weigh,yield per plant,and soluble sugar content.And so an i- deal cultural result could be achieved by the new device.

Hydroponics

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Effects of different-concentration nutrient fluids on cucumber yield and quality and soil characters.

Wang Jiaqian Wu Zhen Bu ChongXing Fangling Jiang You XiuNa

Under high ridge,plastic mulching and drip irrigation conditions,the greenhouse culture experiment with the cucumber cultivarChunqiuwangwas carried out to study the effects of different -concentration nutrient fluids on the cucumber yield and quality and the soil characters.The results indicated that in terms of plant growth and fruit quality and yield,Treatment A was significantly superior to other treatments.The EC value and pH value of the soil after treatments were not significantly different from those of the soil before treatments except the EC value of soil 0～10 cm deep between the drippers and the pH value of soil 0～10 cm deep at the drippers.It was concluded from the above results that Treatment A was the optimal concentration for cucumber culture.

Soil nutrients

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Simulation model on the formation of greenhouse sweet pepper leaf area index

Journal of Applied Ecology (2008)

Ming Diao Jianfeng Dai Weihong Luo Chang-Mei Yuan Bu ChongXing

Leaf area index (LAI) is one of the most important crop parameters in photosynthesis-driving crop growth simulation model and canopy evapotranspiration simulation model, while air temperature and radiation are the important climate factors affecting crop leaf growth. In this paper, experiments with different sweet pepper (Capsicum annuum L.) cultivars and sowing dates were conducted in greenhouse to quantitatively analyze the relationships of the number of unfolding leaves per plant, the number of old leaves removed per plant, and the length of each leaf with air temperature and radiation. Based on these quantitative relationships, a leaf area simulation model for greenhouse sweet pepper was developed, and the independent experimental data were used to validate the model. The results showed that the number of unfolding leaves per plant was a positive exponential function of the product of thermal effectiveness and PAR (TEP) accumulated after emergence, and the length of each leaf was a negative exponential function of the TEP accumulated after emergence. The coefficient of determination (R2) and the root mean squared error (RMSE) between simulated and measured leaf number, leaf length, and LAI were 0.94, 0.89, and 0.93, and 3.4, 2.15, and 0.15, respectively. The model could use air temperature, radiation, planting density, and emergence date to satisfactorily predict the LAI of greenhouse sweet pepper, and supply required LAI information for the sweet pepper growth and canopy evapotranspiration simulation models.

Crop coefficient

Specific leaf area

Growing degree-day

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SIMULATION OF GREENHOUSE CUCUMBER LEAF AREA BASED ON RADIATION AND THERMAL EFFECTIVENESS

Chinese Journal of Plant Ecology (2006)

Yongxiu Li Weihong Luo Ni JiHeng Yongshan Chen Bin Xu

Background and Aims Leaf area index (LAI) is one of the most important crop parameters in photosynthesis driven crop growth simulation models. Temperature and radiation are important climate factors affecting crop leaf growth. The aim of this study is to quantitatively investigate the effects of both temperature and photosynthetically active radiation (PAR) on the leaf growth of greenhouse cucumber (Cucumis sativus). Methods Experiments with different cultivars and sowing dates were conducted in greenhouses of Shanghai Academy of Agricultural Sciences during August,2003 and July,2004. We used the following quantitative relationships based on experimental data to model the relationship between the product of thermal effectiveness and PAR (TEP): accumulated TEP to the number of unfolding leaves per plant and the number of old leaves removed per plant,leaf position relative to the rate of increase in leaf length and the maximum leaf length; and the ratio of leaf area to leaf length. Based on these quantitative relationships,a leaf area simulation model for greenhouse cucumber was developed. Independent experimental data were used to validate the model. The simulated results of the model developed in this study were compared with those of the traditional GDD based model (which predict leaf area based on growing degree days) and SLA based model (which predict leaf area based on the specific leaf area and leaf dry weight). Key Results The coefficient of determination (R2) and the root mean squared error (RMSE) between the simulated and the measured leaf area index (LAI) based on the 1∶1 line are 0.879 2 and 0.398 0,respectively. The prediction accuracy of this model is 37% and 74% higher,respectively,than that of the traditional GDD and SLA based models. Conclusions The model developed in this study can predict LAI satisfactorily using air temperature,radiation,date of the first leaf unfolding and planting density. The simple model input makes the model user friendly and more applicable in greenhouse crop and climate management practices.

10.17521/cjpe.2006.0109

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Physical and chemical characteristics and applied effects of composted spent mushroom as horticultural substrate

Turang feiliao (2006)

Qiansheng Li Bu ChongXing

Utilization of solid wastes like spent compost to produce horticultural substrate has become an environmental friendly measure to full-utilize the natural resources.In this study,the spent compost of Flammulina velutipes was tested as raw material to produce horticultural substrate.Urea,sesame dregs and microorganism were added as supplemental materials.The composted spent compost should be mixed with vermiculite at 6∶4 in volume.The mixture was proved to be a good horticultural substrate in cutting costs and improve yields by cucumber and net melon cultural experiments.

Flammulina

Vermiculite

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Photoperiodic Effect on Growth, Photosynthesis, Mineral Elements, and Metabolome of Tomato Seedlings in a Plant Factory

Plants (2024)

Shaofang Wu Rongguang Li Bu ChongXing Cuifang Zhu Chen Miao

The duration of light exposure is a crucial environmental factor that regulates various physiological processes in plants, with optimal timing differing between species and varieties. To assess the effect of photoperiods on the growth and metabolites of a specific truss tomato cultivar, three photoperiods (12 h, 16 h, and 20 h) were tested in a plant factory. Growth parameters, including plant height, stem diameter, fresh and dry weights of shoots and roots, photosynthetic characteristics, mineral content, and metabolome profiles, were analyzed under these conditions. The results indicated that prolonged light exposure enhanced plant growth, with the highest photosynthesis and chlorophyll content observed under a 20 h photoperiod. However, no significant correlation was observed between the photoperiod and the mineral element content, particularly for macro minerals. Metabolome analysis revealed that different photoperiods influenced the accumulation of metabolites, particularly in the lipid metabolism, amino acid metabolism, and membrane transport pathways. Long periods of light would enhance photosynthesis and metabolism, improving the rapid growth of tomato seedlings. Overall, this study provides a theoretical basis for understanding the responses of truss tomato cultivars to varying photoperiods in plant factories and proposes an optimizable method for accelerating the progress of tomato seedling cultivation.

Metabolome

Plant factory

Plant Physiology

Ecophysiology

10.3390/plants13223119

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Effects of high ridge, plastic mulching and drip irrigation with complete nutrient fluid on cucumber planted in secondary saline-alkali soil.

Shanghai nongye xuebao (2009)

You XiuNa Bu ChongXing Yongxia Jia Guo ShiRong

In order to study the effects of high ridge,plastic mulching and drip irrigation with complete nutrient fluid in using secondary saline-alkali soil and preventing secondary salinization,the cultural experiments with cucumber were carried out in secondary saline-alkali soil,garden soil and open soil.The results showed that by the cultural technique of high ridge,plastic mulching and drip irrigation with complete nutrient fluid,the cucumber plants in secondary saline-alkali soil were slightly inhibited only at seedling stage compared with those in open soil,but later grew sturdily.The fruit yield was not affected and the contents of vitamin C,soluble sugar and organic acid in the fruit were slightly improved,though all the parameters were inferior to those of plants cultured in garden soil.The experimental result indicated that the EC value of the secondary saline-alkali soil dropped,and the cultural technique could be used to improve the secondary saline-alkali soil.

Alkali soil

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