Abstract:

Abstract:Using the method of leaf and soil nutrient analysis to define and adjust fruit trees fertilizer amount,ten apricot varieties leaf nutrient contents and soil nutrient of different experimental sites were tested.The results showed that,compared with other fruit trees,apricot require more fertilizer in deciduous fruit tree,and N P K ratio is 1:0.07:0.44. Different varieties exhibits some differences,besidesK Na Mn Fe have significant difference in individual variety,other element content difference in different varieties is small.Leaf available N is 3.49%,P is 0.26% ,K is 1.54%, Ca is 1.41%,Mg is 0.36%, Cl is 0.36% ,Fe is 93ug/g, Zn is 17.86 ug/g ,Cu is 10.43 ug/g, Mn is 71.10 ug/g, Na is 263.07 ug/g.Yubadan and kate like K very much, Kate and chuanjiaogunzi contain the highest Fe in leaf , Optimization 1 requires much more Na,Na contant of Star apricot is 1.63 of mean.Different sites should fertilizer differently.