Preliminary Study On The Relationship Between Nutrition Of Tree Body And Bearing Ratio Of Almond Trees

This paper study mainly on the relationship between nutrition of tree body and bearing ratio of'yingzui'almond (Prunus communis Fritsch. cv. yingzui), in order to dtudy and analyze the content of mineral element in 3 kind of different trees body type almond, the relations of 12 characters with bearing ratio were analyzed, through investigation the effect of spraying nutrient elements and growth regulators during the full blooming period. The main results as follows:1. The investigation obtains the order of 3 kind of different tree body type fruit-falling rate is the mean tree, weak force tree, strong force tree, also the difference of the mean tree and strong force tree is remarkable. The order of the growth of spring shoot is: mean tree > weak force tree > strong force tree, and the difference between mean tree and strong force tree is extremely remarkable, but the difference of the growth of autumn shoot is not remarkable.2. 3 kind of different trees body type almond, the order of the content of N, K and Mg element is: strong force tree > mean tree > weak force tree. The tendency of the content change of Mn and Fe element is: weak force tree > mean tree > strong force tree, but the Zn element content change tendency is just right opposite.3. Through the statistics and analysis, Fe, Mn element and the tree body type assumes extremely remarkably negative correlation, but assumes extremely remarkably with width; The tree body type, N and Zn element assume extremely remarkably, but assumes extremely remarkably with width negative correlation. Meanwhile, Zn and width, Fe and N element assumes the extremely remarkable negative correlation.4. GA3 sprayed at 40 mg·L-1 and 2,4-D sprayed at 20mg/L both had the best purpose, and the bearing ratio were increased by 7.67% and 8.33% respectively compared with the control. In different thickness disposals,NAA sprayed at 30mg/L and B9 sprayed at 100 mg·L-1 were both remarkably improved the fruit setting , and the bearing ratio were increased by 11.00% and 6.67% respectively compared with the control. K2PO4 sprayed at 0.4% had the best purpose, and the bearing ratio was increased by 20.33% compared with the control.