Study On The Suitability Evaluation Of Six Plants Under Photovoltaic Greenhouse Conditions

The development of photovoltaic agriculture is a green industry with both ecological and economic benefits,and the commanding height of modern agriculture.The development of photovoltaic agriculture is sustainable.But how can photovoltaic greenhouses combine with factory production of plants to efficiently improve output quality.The reasonable shading rate for the construction of photovoltaic greenhouses to remove the weak light restrictions and the selection of plant varieties for planting are the keys to success.In this experiment,four garden plants of Dracaena cambodiana,Philodendron erubescens,Zamioculcas zamiifolia and Epipremnum aureum,as well as two economic crops of Zingiber officinale and Ipomoea batatas,were taken as the research objects.The test measured the chlorophyll content,chlorophyll fluorescence parameters,leaf shape,biomass,biomass allocation,plant relative water content and plant growth morphology and other evaluation indicators,and comprehensively evaluated their installation ratios in power generation photovoltaic panels were 50%,75% and 100% 3 kinds of shading rate The difference in fitness performance under photovoltaic greenhouses.The main conclusions are as follows:(1)Chlorophyll content,chlorophyll fluorescence parameters,leaf traits,biomass,biomass allocation,relative water content of plants and plant growth morphology in the 6 test plants at 50% shading rate,75% shading rate and 100% shading rate Statistical differences were shown below,indicating that plants adapted to changes in external light by changing their physiological and ecological forms.It can be summarized as: With the increase of shading rate,plants increased the proportion of PSII reaction centers by increasing chlorophyll content and photochemical efficiency,Reduced heat dissipation,improved electron transfer rate and light energy capture rate to adapt to low light environment.As the shading rate increases,plants increased leaf width,leaf area,and specific leaf area to reduce leaf thickness,leaf mass ratio,and specific leaf weight to obtain more light energy;while in a relatively strong light environment,plants will By reducing the leaf area and specific leaf area,the leaf thickness,leaf stem mass ratio and specific leaf weight were increased to avoid the damage of light suppression.With the increase of shading rate,the transpiration of plants decreased,and the relative water content of plants decreased.The increase in shading rate caused the ratio of root-to-root ratio and root biomass,the ratio of leaf biomass and stem biomass to increase.The proportion of the underground part was reduced to obtain more light;the difference in plant biomass and growth morphology was basically proportional to the quality of plant growth performance.(2)The main manifestations of the difference in the evaluation index values of the six plants in the photovoltaic greenhouses with different shading rates varied according to the type of plant.The evaluation indicators of the difference under different shading rates in photovoltaic greenhouses.Dracaena cambodiana was the chlorophyll fluorescence parameter and growth morphology;Philodendron erubescens was the biomass allocation and growth morphology;Zamioculcas zamiifolia was the leaf trait;Epipremnum aureum was the chlorophyll fluorescence parameter and Plant relative water content;Zingiber officinale was biomass;Ipomoea batatas was chlorophyll fluorescence,biomass and leaf traits.(3)Planting under the conditions of 3 types of photovoltaic greenhouses,the optimal shading rate of 6 types of plants was preferred,and the order of growth was different depending on the type of plants.For tuber economic crops Zingiber officinale and Ipomoea batatas,the shading rate of Zingiber officinale suitable for 75% was better than 50% better than 100%,and the shading rate of Ipomoea batatas was 50% better than 100% better than75%.For the garden plants Dracaena cambodiana,Philodendron erubescens,Zamioculcas zamiifolia and Epipremnum aureum,Dracaena cambodiana,Philodendron erubescens and Zamioculcas zamiifolia all showed consistent fitness performance,that was,100% was better than 75%.Less than 50%;the shading rate of Epipremnum aureum was 50% better than 75%better than 100%.In view of the highest economic efficiency of photovoltaic greenhouses with a 100% shading rate,it is believed that three kinds of garden ornamental plants,such as Dracaena cambodiana,Philodendron erubescens and Zamioculcas zamiifolia,can be produced as commercial plants in photovoltaic greenhouses.In this paper,combined with the experimental photovoltaic greenhouse installation capacity,power generation and the benefit estimate of the appropriate performance of the garden economic ornamental plants under the experiment,the production guidance suggestions for the industrial model of "photovoltaic greenhouse + garden plants" were put forward.