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Title:: Effects of Irrigating Salinity Water on Growth,Yield and Quality of Protected Tomato

Author(s):: GAO Ruoxing1; 2; 3; GUO Wenzhong2; HAN Qibiao1; LI Lingzhi3; HE Zhiwen2; 3; WANG Lichun2; (1.Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences/Key Laboratory of Water Saving Agriculture of Henan Province,Xinxiang，Henan 453002；2.Beijing Research Centre of Intelligent Equipment for Agriculture,Beijing 100093；3.College of Horticulture,Shanxi Agricultural University,Taigu，Shanxi 030800)

Abstract:: Tomato was taken as material,the saline water irrigation experiment was carried out in a solar greenhouse.Three treatments were designed using different irrigation water with salt concentrations of 0.4,3.4,6.4 g·L-1,respectively.The influences of irrigating salinity water on growth yield and fruit quality of protected tomato were studied,The results showed that,compared with 0.4 g·L-1 of salt concentration treatment,the growth of tomato leaf area index (LAI),stem biomass,leaf biomass,stem/leaf biomass ratio were inhibited under 6.4 g·L-1 of salt concentration treatment,but these indexes were increased for 3.4 g·L-1 of salt concentration treatment.The yield of tomato was decreased with increasing of irrigating salinity water.The tomato fruit quality for 3.4 g·L-1 of salt concentration treatment was superior to that for the other two treatments,which indicated that tomato fruit quality was improved by irrigating with moderating concentration of saline water.However,there was a negative effect on tomato quality with the further increasing of irrigating salinity water.The tomato yield was decreased with the increasing of irrigating salinity water.Therefore,soil salinity should be monitored and controlled to avoid the negative effect of soil salt accumulation on tomato yield and quality under saline water irrigation condition.