| This study mainly studied that Changes in physiology,biochemistry,and photosynthetic index that the physiology of three vegetables,Lettuce,cucumber,tomato,grow under different light-shielding densities(T1: internal 60% photovoltaic panel shading density,T2: internal 30% photovoltaic panel shading density,T3: external 30% photovoltaic panel shading density,CK: natural light region;),I use this method to explore the suitable shading density for the physiological growth of three kinds of vegetables;The experiment also studied the influence of shading density of different photovoltaic panels on the quality of three kinds of vegetables.I used to find out the optimal shading density for the growth of three kinds of vegetables;The experiment also studied the power generation status of photovoltaic panels.I provided some reference tools for the production and income increase of three kinds of vegetables.The result is as follows:1.It was found that the physiological growth performance of four season growth of lettuce under different shading densities of photovoltaic panels was basically the same.I reached a conclusion through single-factor analysis: There was no significant effect of pigments on the shading density of lettuce leaves on plant height,stem diameter,leaf area,leaf number,and photosynthetic rate of lettuce.but the shading density of the photovoltaic plates reduced the stomatal conductance of the lettuce leaves,the concentration of carbon dioxide between cells,and the transpiration rate;The root growth status of lettuce was affected by the shading density of photovoltaic panels,which showed that the root vitality of the natural light region(CK)was the highest,and the internal 60% photovoltaic panel shading density(T1)was the smallest,and the root to crown ratio concluded that the shading density was greater.The smaller the root-to-crown ratio,the smaller the shading density of photovoltaic panels,the higher the vitamin C content,soluble sugar content,and leaf nitrogen content of lettuce would be in the quality of lettuce.The yield of lettuce is expressed in the maximum yield of lettuce at the internal 30% photovoltaic panel shading density(T2)of photovoltaic panels.The photovoltaic panel power generation performance shows that the greater the shading density of photovoltaic panels,the more photovoltaic power generation,the most power generation in the summer,and the least power generation in the winter,Photovoltaic panels generate the most electricity in sunny days,and photovoltaic panels generate the least amount of electricity in rainy days.For light,in sunny and cloudy weather,each treatment can basically meet the needs of light saturation point and light compensation point of lettuce,and light does not affect the growth and development of lettuce;in cloudy and rainy weather,T1 and T2 treatment cannot meet the need of the light saturation point and light compensation point of lettuce,light affects the growth and development of lettuce,but CK treatment can meet the needs of the light saturation point and light compensation point of lettuce,and the light does not affect the growth and development of lettuce;2.The experimental results showed that the physiological growth of cucumber under different shading densities of different photovoltaic panels had little effect.After single factor analysis,there was no significant difference in cucumber plant height,stem diameter,number of leaves,photosynthetic pigments,but cucumbers were in photosynthetic.However,there was a significant difference in indicators,showing that the greater the shading density,the lower the net photosynthetic rate,stomatal conductance,intercellular carbon dioxide concentration,and transpiration rate,and the four shading indicators of external shading under the same shading density were smaller than the shading of internal photovoltaic panels.The conclusion of cucumber quality is as follows: The smaller the shading density of photovoltaic panels,it can promote the production and accumulation of vitamin C and soluble sugar in cucumbers.For the same shading density,the shading in the interior and the external shading,the exterior shading promotes cucumber vitamin C and soluble sugar.The accumulation of the content,but in terms of organic acids,there was no significant difference between the four treatments;the yield of cucumber was concluded as follows: the yield of cucumber in the natural light region(CK)is the highest,and the internal 60% of the photovoltaic panel shading density(T1)The yield of cucumber was the lowest,and the yield of cucumber under the shading of internal photovoltaic panels was higher than that of the same shading density of 30% of the internal photovoltaic panels and the external 30% of photovoltaic panels.The photovoltaic panel power generation conclusion is that the greater the shading density of photovoltaic panels,the more photovoltaic power generation,the more power generation in the spring,and the less power generation in the fall,Photovoltaic panels generate the most electricity in sunny days,and photovoltaic panels generate the least amount of electricity in rainy days.compared with the external light shading in the same shading density,the external photovoltaic panel shading generates more power.For light,in sunny and cloudy weather,T1 and T2,T3,and CK treatments can meet the needs of cucumber's light compensation point and light saturation point.Light does not affect the normal growth of cucumber;in cloudy and rainy weather,T1 treatment can not meet the needs of cucumber light compensation point and light saturation point,T2,T3,CK treatment can only meet the needs of cucumber light compensation point,light affects the normal growth of cucumber;3.The conclusions of the experiment showed that there were no significant differences in the plant growth,stem diameter,number of leaves,photosynthetic pigments,and other physiological growth treatments of tomato plants under different shading densities of photovoltaic panels.The photosynthetic index of tomato was shown to be different after single factor correlation analysis.The difference in the shading densities of photovoltaic panels shows that the smaller the shading density,the greater the net photosynthetic rate,stomatal conductance,the concentration of carbon dioxide between cells,and the transpiration rate.The conclusion of the quality was that the content of vitamin C and organic acids in tomatoes was the highest under the shading density(T2)of the internal 30% photovoltaic panel,and the soluble sugar content and the content of lycopene of tomato under the natural light region(CK)were the highest.The yield of tomato was concluded as follows: the output of natural light region(CK)was the highest,and the yield of tomato under the internal 60% photovoltaic panel shading density(T1)was the lowest;the conclusion of photovoltaic panel generation showed that the greater the shading density of photovoltaic panels,the greater the photovoltaic power generation.While photovoltaic panels generate more power in the spring and less power generation in autumn and winter,Photovoltaic panels generate the most electricity in sunny days,and photovoltaic panels generate the least amount of electricity in rainy days.For light,in sunny and cloudy weather,T1,T2,and CK treatments can meet the needs of tomato light compensation point and light saturation point.Light does not affect the normal growth of tomato;in cloudy and rainy weather,T1 and T2,CK treatment can not meet the light saturation point of tomato,but T1 and T2,CK treatment can meet the needs of light compensation point,light affects the normal growth of tomato;... |
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