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| Effects of Commercial Rock Wool Strip and Coco Coir Strip on Growth，Photosynthesis，Yield and Fruit Quality of Cucumber |
| HE Lizhong1，DING Xiaotao1，JIN Haijun1，ZHANG Hongmei1，CUI Jiawei1，ZHOU Qiang2，YUJizhu 1* |
1 Protected Horticultural Research Institute，Shanghai Academy of Agricultural Sciences，Shanghai Key Lab of Protected
Horticultural Technology，Shanghai 201403，China；2 Shanghai Dushi Green Engineering Co.，Ltd.，Shanghai 201403，
China |
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Abstract Taking cucumber varieties ‘Daiduoxing’ and ‘Chunqiuwang’ as test materials，this paper
carried out seedling and cultivation experiment using commercial rock wool strip and coco coir strip，
respectively；and studied the effects of different cultivation substrates on cucumber growth，photosynthesis，
yield and fruit quality．The results showed that after the first true leaf unfolded 26 days the stem diameter and
the 2nd to 4th leaf area of cucumber seedlings cultured in coco coir substrate were all higher than that of cucumber
seedlings cultured in rock wool substrate．Cucumber plants grown in coco coir substrate had significantly higher
net photosynthetic rate（Pn），stomatal conductance（Gs） and yield of signal plant（ 25 days after harvest） than
that of the plant cultured in rock wool substrate．And also the ratio of cucumber fruit dry matter weight in total
dry matter was higher．The contents of soluble sugar and VC in cucumber cultivated in coco coir substrate were
higher than that of the cucumber cultivated in rock wool substrate. In conclusion，coco coir substrate could
promote the growth of cucumber by certain degree and obtain higher fruit quality．Commercial coco coir was
suitable in its popularization and application in greenhouse for cucumber seedling and production．
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Received: 07 July 2021
Published: 26 August 2021
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