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| Effects of Soil Salinity on Growth，Photosynthetic Characters and Yield of
Tomato Cultivated in Organic Substrate |
| BAI Long-qiang1，LI Yan-su1，YU Xian-chang1*，GUO Xiao-qing2 |
1 Institute of Vegetables and Flowers， Chinese Academy of Agricultural Sciences， Beijing 100081， China； 2 Agricultural
Technology Promotion Center of Yantai City， Yantai 264001， Shandong， China |
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Abstract Taking tomato（Lycopersicon esculentum Mill.） cultivated in organic substrate of normal
soil as the control（CK），an experiment was conducted using Half Isolated Style of Organic Substrate
Culture（OSC）to plant tomato in saline soil with 3 different salinity levels of 5‰，10‰ and 15‰，
respectively and to study the regulation of Na+ migration and the effects of Na+ in soil on physiological
characteristics and yield of tomato．The result showed that the Na+ contents in the soil under the substrate
was leached by T1，T2，T3 treatments；and the plant height，the stem diameter accumulated amount
of dry matter，the leaf photosynthetic rate，the yield of tomato and the Na+ content in tomato leaf had
not significant differences with that of the CK．The results indicated that the soil with less than 15‰ salt
content had not effect on tomato cultured by Half Isolated Styl e of Organic Substrate Culture．
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Received: 29 September 2012
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