| Pea(Pisum sativum L.)and radish(Raphanus sativus L.)sprouts are rich in vitamins,minerals,amino acids and other nutrients needed by the human body,with high nutritional and medicinal value.It can be eaten fresh to make cold dishes,and can be deep-processed to make soap,green juice,etc.It has broad development prospects.At present,systematic studies on the effects of sowing density,light quality,photoperiod,and light intensity on pea and radish sprouts are rarely reported.Therefore,in this study,LED light was used as the light source,’Lvshan Valley Mawangdou No.2’and’Lvshan Valley White Crystal Radish No.3’were used as test materials.The paper cultivation method was used to explore different seeding densities,red and blue composite light,The influence of photoperiod and light intensity on the growth,yield and quality of pea and radish sprouts,clarify the relationship and law of sowing density,light quality,photoperiod and light intensity on the yield and quality of pea and radish sprouts,The planting density,LED red and blue compound light,photoperiod and light intensity that can cultivate high-yield and high-quality peas and radish sprouts are selected to provide a certain theoretical basis and production guidance for the intensive production of sprouts in the facility environment.(1)Under different sowing densities,in pea sprouts,the plant height,aboveground fresh weight,edible rate and economic yield of T3 treatment(2.4 kg/m~2)are better than other treatments;in terms of physiological indicators,chlorophyll The b content,soluble protein content and vitamin C content are the highest,and the soluble sugar content is relatively high.The multiple indexes of pea sprouts treated with T3(2.4 kg/m~2)had the maximum value,and the performance was the best.Among the radish sprouts,the plant height,aboveground fresh weight,water content and economic yield of treatment C(0.5 kg/m~2)are the highest,and the biological yield is relatively high;in terms of physiological indicators,the content of chlorophyll a+b and chlorophyll A content,chlorophyll b content,soluble protein content and soluble sugar content are better than other treatments.Therefore,treatment C(0.5 kg/m~2)has better values of multiple indicators than other treatments,and can cultivate high-quality radish sprouts.(2)Under different ratios of red and blue compound light conditions,in pea sprouts,the plant height of treatment 3(red light: blue light = 5:1)is higher,and the fresh weight of the whole plant,the dry weight of the whole plant and the biological yield are all Higher than other treatments,they were 1.23 times,1.27 times,and 1.23 times that of CK(white light).In terms of physiological indicators,treatment 3 had the highest chlorophyll a+b content and carotenoid content,and soluble sugar and soluble protein content were higher than CK.The multiple indicators of pea sprouts treatment 3(red light: blue light = 5:1)had the maximum value and performed best.Among the radish sprouts,treatment 4(red light: blue light=9:1)plant height was significantly higher than CK(white light),and the fresh weight of the whole plant,the dry weight of the whole plant,the biological yield,and the economic yield were the highest;in terms of physiological indicators,The content of chlorophyll a,soluble sugar and vitamin C of treatment 4 were higher than that of CK.It can be seen that treatment 4(red light: blue light = 9:1)has better values than other treatments,and can cultivate high-quality radish sprouts.(3)Under different photoperiod conditions,in pea sprouts,the fresh weight,economic yield,and edible rate of the above-ground part of treatment C(16 h/d)were 1.03 times and 1.03 times that of treatment A(12 h/d),respectively.In terms of physiological indicators,the total phenol content,chlorophyll b content,chlorophyll a content,soluble sugar content,soluble protein content and chlorophyll a+b content of treatment C were significantly higher than other treatments.The multiple indexes of pea sprouts treatment C(16 h/d)had the maximum value,and the performance was the best.In radish sprouts,the fresh weight,biological yield and economic yield of the above-ground part of treatment A(12 h/d)were better than other treatments,which were 1.33 times,1.31 times,and 1.33 times that of treatment C(16 h/d),respectively.Physiological indicators,soluble protein content,soluble sugar content and chlorophyll a+b content are relatively high.Therefore,treatment A(12 h/d)has better values of multiple indicators than other treatments,and can cultivate high-quality radish sprouts.(4)Under different light intensities,among pea sprouts,treatment B(30 μmol/(m~2·s))had the highest above-ground fresh weight and the highest above-ground dry weight,respectively.Treatment A(20μmol/(m~2·s))1.10 times,1.02 times;in terms of physiological indicators,the total flavonoid content,soluble sugar content,vitamin C content and soluble protein content of Treatment B are relatively high.The pea sprout seedling vegetable treatment B(30 μmol/(m~2·s))had better values than other treatments and performed the best.In radish sprouts,treatment D(100 μmol/(m~2·s))had better above-ground fresh weight and above-ground dry weight than other treatments;in terms of physiological indicators,the soluble sugar content and vitamin C content of treatment D And the total phenol content is the highest,which is 1.18 times,1.17 times and 1.08 times that of Treatment A(20 μmol/(m~2·s))respectively.Therefore,treatment D(100 μmol/(m~2·s))has better values than other treatments and can cultivate high-quality radish sprouts.In summary,in the production of pea sprouts,the seeding density is 2.4 kg/m~2,the light quality is red light: blue light = 5:1,the light intensity is 30 μmol/(m~2·s),and the photoperiod is 16 h/d;in the production of radish sprouts,the sowing density is 0.5 kg/m~2,the light quality is red light: blue light=9:1,the light intensity is 100 μmol/(m~2·s),and the photoperiod is 12 h/d,is conducive to increase output,improve quality,and increase economic benefits. |
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