The Effects Of Long Term Combined Application Phosphate Fertilizer And Potassium Fertilizer On Tomato Yield,Absorption And Distribution Of Fe,Mn,Cu And Zn

The aim of this study was to study the effects of trace elements on the yield of tomato and the contents of trace elements Fe,Mn,Cu and Zn in tomato fruit were analyzed.In the 28 year long term fertilization experiment on the basis of test materials in tomato ’Jin guan No.8’,by studying the influence of phosphate and potash fertilizers on the contents of trace elements in soil and tomato,plants,fruit clear absorption and distribution of Fe,Mn,Cu,Zn,in determining the different fertilization modes.The changes of the contents of trace elements.At the same time,through the research on the application of different fertilizers,the effects of phosphorus and potassium fertilizer on the yield and quality of tomato were studied.The conclusion is that:.1.Phosphorus and potassium fertilizer on the iron content in the soil is not significant;organic fertilizer or fertilizer can increase the content of Mn in soil,organic fertilizer and nitrogen fertilizer on the contrary;organic fertilizer and nitrogen fertilizer can increase the copper content;organic fertilizer can increase the content of zinc in soil.2.The effect of Fertilization on the content of trace elements in tomato plants was great.The content of Fe,Mn and Cu in roots could be increased by the application of phosphorus and potassium fertilizer,but the content of Zn in roots was decreased.Organic fertilizer with N and P fertilizers to increase iron content of stems;organic fertilizer and potassium fertilizer nitrogen or nitrogen phosphorus fertilizer can increase the content of leaf iron;organic fertilizer can reduce the content of manganese in leaves;nitrogen fertilizer can increase the copper content in the leaves,and the organic fertilizer and nitrogen fertilizer decreased the copper content in the leaves.The application of organic fertilizer and nitrogen and potassium fertilizer reduced the content of zinc in leaves.3.The effects of Fertilization on the contents of Fe,Mn,Cu and Zn in fruits were greatly affected.The application of organic fertilizer can reduce the content of tomato fruit of iron and manganese,phosphorus potassium fertilizer can improve the content of manganese and copper in fruit,organic fertilizer and nitrogen fertilizer content of manganese and copper in the fruit decreased;fertilizer application could increase the single zinc content in fruit,phosphorus and potassium have the opposite effects.4.The trace elements of iron,manganese,copper and zinc for the distribution ratio of tomato plants in various parts in all treatments in tomato iron distribution shows shoots were lower than the underground,manganese opposite;organic fertilizer and phosphorus potassium fertilizer processing tomato copper distribution shows shoot below the ground,the other treatment with underground balance in the basic state;organic fertilizer processing tomato zinc distribution shows shoot higher than the underground part,only Zn distribution in tomato showed aboveground nitrogen below the underground.5.Fertilization has effects on tomato fruit weight and total yield,a reasonable distribution between organic and inorganic fertilizer can significantly increase the tomato yield and fruit weight;phosphorus potassium fertilizer nas certain effects on tomato yield,but had no signiticant ettect on tomato fruit weight.Organic and inorganic fertilizers on tomato fruit sugar content,acid content influence performance after fertilization can significantly enhance the content of soluble sugar in fruits,while reducing the content of organic acid,thereby improving the sugar acid ratio,improve tomato flavor,improve the quality and nutritional characters of tomato.