Effects Of Different Nutrient Solution Concentrations On The Growth And Development Of NFT Cultured Tomatoes And The Absorption And Distribution Of Inorganic Elements

The study used cherry tomato ’Xiangxiang No.3’ and Daguotao ’Jingfan 302’ as test materials.The effects of different nutrient solution concentrations on the growth and development,fruit quality,yield and absorption and distribution of inorganic elements in NFT culture were studied.In order to provide theoretical and practical basis for the production of high-sugar cherry tomatoes and large-fruit tomatoes in NFT culture in the future.The results showed that:1、ltime added calcium chloride Japanese garden(T3)is conducive to growth and developm ent.1.5 time adjusted potassium to nitrogen ratio Japanese garden(T4)has a greater impact on the dry weight accumulation of cherry tomatoes.In the three growth stages,six mineral elements in the tomato plants were higher in nitrogen,potassium and sodium than phosphorus,calcium and magnesium.From the accumulation of various parts of the plant,T3 and T4 treatments are more conducive to the absorption of mineral elements in various parts of the plant,and the dis tribution characteristics are better treated with T3 and T4.The content of each element in cherr y tomato fruit is potassium>nitrogen>calcium>phosphorus>magnesium.There are large differences in mineral elements between different ears in each treatment.2、Each treatment had no significant effect on the quality index of cherry tomatoes.In the yield of cherry tomatoes,treatment with T1 was higher than other treatments.The growth of tomato and the accumulation and distribution of mineral elements under T4 treatment were better,but there was no significant effect on quality and yield The yield of 1.5 time Japanese garden(T1)and ltime added calcium chloride Japanese garden(T3)is higher than other treatments.According to the comprehensive indicators and fertilizer input,T3 treatment is an ideal nutrient solution concentration for cherry tomatoes.3、1.5 time adjusted potassium to nitrogen ratio Japanese garden(TD)to promote tomato plant height growth,enhance the photosynthetic day effect of the leaves.The addition of calcium chloride(TC)to the nutrient solution can significantly increase the dry matter quality of the plant.The cumulative amount of nitrogen,potassium and calcium in all parts of the whole growth period was higher than that of phosphorus,magnesium and sodium.、1 time Japanese garden(TA)had the greatest influence on the accumulation of mineral elements in various parts of tomato plants,followed by TC.The content of mineral elements in the fruit of big fruit tomato tomato was potassium>nitrogen>calcium>phosphorus>magnesium,which was higher in TC and TD than in other treatments.4、Each treatment had no significant effect on the quality index of the large fruit tomato.When the concentration of nutrient solution increases,the yield decreases,and the incidence of umbilical rot also rises.The TC treatment yield reached 5601kg/667m2,and its umbilical rot rate was also low.In summary,TC treatment is an ideal nutrient solution concentration for NFT.