Development And Application Of Special Water Soluble Fertilizer For Leaf Surface Of Pear Tree

Based on the analysis of the soil of the pear garden in Tangzhai town of Dangshan County,this paper finds out the abundance and deficiency of various nutrient elements,studies the water salt system diagram with potassium element as the main element,gets the water soluble fertilizer prescription area of the special leaf surface of pear tree,prepares water soluble fertilizer for special leaf surface of pear tree and applies it to Tangzhai town garden in Dangshan County,and obtains its application effect.Based on isothermic equilibrium method,researched the phase equilibrium of K2O-Ca-H2O?K2O-Mg-H2O?K2O-Cu-H2O?K2O-Fe-H2O?K2O-Mn-H2O?K2O-Zn-H2O?K2O-H3BO3-H2O dual systeam and K2O-Ca-Mg-H2O?K2O-Mn-Zn-H2O triple system under 0??10??25??pH=4,5-5,drawn phase diagrams of dual system by Origin software,and drawn phase diagrams of triple system by Matlab software.According to the phase diagrams of K2O-Ca-H2O?K2O-Mg-H20?K2O-Cu-H2O?K2O-Fe-H2O?K2O-Mn-H2O?K2O-Zn-H2O?K2O-H3BO3-H2O?K2O-Ca-Mg-H2O?K2O-Mn-Zn-H2O under different temperatures,we can obtained the water soluble fertilizer formula areas in different systems.Based on the phase diagram of the water salt system and the results of the pear tree soil survey,macro-element,mid-elements and trace-element water soluble fertilizer was prepared,which was used in the town of pear garden,Tangzhai County,Dangshan county.The results showed that,on the basis of fruit farmers habit of fertilization,macro-element,mid-elements and trace-element water soluble fertilizer could significantly decrease the content of titrable acid and increase the content of soluble sugar and vitamin C.The water soluble fertilizer can increase the content of soluble solid obviously.Compared with traditional fertilization of fruit farmers,the water soluble fertilizer can improve the fruit quality of Dangshan pear.