Different Fertilizer Treatment On The Korla Fragrant Pear Tree Body Nutrition Accumulation And Hardiness Influence

The Korla fragrant pear originated in the Korla region of Xinjiang in China is idiomatical industry of local economic. Korla fragrant pears caused serious damage, for the improper management and production by frozen injury many times in recent years. Research found that the Korla fragrant pear happen different degrees of cold and tree body nutrition. We discover the relationship between fragrant pear tree body nutrition and hardiness. Therefore, we study the relationship, can provide a reference for cold resistance of fragrant pear.For study the influence of above relationship, this experiment with10years and20years of fragrant pear tree as test materials, using the method of different amount of basal; and spraying different N, P, K, B proportion of foliar fertilization. Determination of different processing of leaves mineral nutrition composition; Do cryogenic stress test with different treatment of dormant branches, determine the cold resistance index. Discuss the relationship between nutrition change and the fight cold ability. The results were as follows:1. The year cycle each of mineral nutrition elements in the leaves:N, P, K content overall as negatively correlated with the increase of the lower by foliar age going, N content in July appear peak; Ca content nutritional growth in the early rapid accumulation, later period maintain stable status; Mg content in the lowest June appear, and later accumulation gently; Zn, Fe content in the whole growth period change volatile.2. The study found that deal with railway N2, B2fertilizer effect, overall is better. Railway processing P and K, Ca, Mg element content were higher; N2processing N, Ca, Zn, Fe element content were higher; B2of Ca, Mg processing, Zn, Fe element content were higher.3.The nutrition elements accumulated content is higher than in change by foliar fertilization processing, but foliar fertilization in the early growth each fruit processing content of nutrient elements a basal deal with high and change significantly.4. In the leaf blade in different content of nutrient elements to be no obvious difference between whole; High levels of foliar fertilization the treatment effect is better than the whole low concentration leaves fertilizer processing.5. According to the correlation analysis shows that in the leaves of different mineral nutrition elements of the absorption and between accumulation obvious influence each other relations, significant correlations antagonist relationship between N, P, K and Fe, N and P, Mg; collaborative relationship between Ca, Mg, Zn, Fe.6. Cold hardiness research shows that N2, PK2, processing, the tree body cold effect is good.7. Different basal processing in the branches of the cryogenic stress cold order:Jc> Jb> Ja.