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| Effects of Different Light Supplement Duration on Growth，Yield and Quality of Tomato Cultivated in Solar-greenhouse |
| WANG Shu-ya，LYU Jian*，YU Ji-hua*，JIN Ning，JIN Li，LIU Xiao-qi，WEI Shou-hui，GAO Feng |
| College of Horticulture，Gansu Agricultural University，Lanzhou 730070，Gansu，China |
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Abstract Under solar greenhouse condition，taking LED plant growth lamp（red and blue 7∶2）as
complementary light source，this paper studied the effects of different filling hours（1，2，3 hours）on tomato
growth，yield and quality. The results showed that compared with the control（without light supplementation），
both 2 and 3 hours could significantly increase the plant height，stem diameter and leaf areas of tomato. Filling 3
hours could significantly improve the single fruit weight，fruit number and yield，contents of fruit VC，soluble
sugar，and sugar-acid ratio. The yield was increased by 7.0%，and profit increased by 7 933.5 yuan·hm-2. In
summary，supplemental light for 3 hours has the best effects on promoting tomato growth，increasing yield and
improving fruit quality.
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Received: 03 August 2018
Published: 03 September 2018
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