Effects Of Canopy Micro-Climate, Yield And Quality Of Different Shapes On Apple In Weibei

This Trial is 13-14 year-old apple trees of with freedom spindle shape, small and sparse canopy shape and open stem and middle center shape in in the main producing areas of Luochuan County of Weibei in Shaanxi Province,not only determination of the different tree canopy of light, temperature, humidity, wind speed and other micro-climate factor ,but also determination of the different tree of branches, leaf area index, the quality of leaves and photosynthesis, and other physiological indicators and the cultivation of different tree fruit production and related quality indicators, compared to these three kinds of micro-climate tree canopy and fruit yield and quality differences, for the selection and production of fine quality apple tree and provide a theoretical basis and reference. The results are as follows:1.The characteristics of the canopy micro-climate of the different shapesThe canopy of the light From inside to outside and within from down to up gradually increased in the different shapes.The open stem and middle center shape relative intensity of less than 30 percent of the minimum percentage of invalid light district, 24.38 percent, and 30 percent to 80 percent effective-the highest proportion of the district, for 55.03 percent, more than 80 percent of the glare area ratio of 20.59 %, and freedom spindle shape and small and sparse canopy shape of the differences significantly.From May to October temperature curve for the single peak of the different shapes, the highest temperature in August. Relative humidity at first increase after the lower trend, the lowest in August, the highest in October. The crown temperature of the open stem and middle center shap higher than freedom spindle shape and small and sparse canopy shape,and changes in the relative humidity of days lower than freedom spindle shape and small and sparse canopy shape. The hightest wind speed in the three-dimensional space and carbon dioxide concentration more than freedom spindle shape and small and sparse canopy shape.2.The branches and leaves of different shapesFreedom spindle shape ,small and sparse canopy shape and the open stem and middle center shape's Sticks of per Strain for for 1558, 1332, 1465, the open stem and middle center shape's Sticks is middle, the long branches,middle branch and spur was 1:2:7 in the open stem and middle center shape, more Freedom spindle shape and small and sparse canopy shape canopy in the distribution and reasonable. 3.The yield and qualityof the different shapesFreedom spindle shape ,small and sparse canopy shape and the open stem and middle center shape's yield are 46.2 kg, 38.3 kg and 35.4 kg per strain, the open stem and middle center shape have high yields, in the crown on the distribution of reasonable quality fruit, mainly in the 2-3 m canopy, fruit quality, color index, anthocyanin content, hardness and soluble solids content with the canopy tends to increase the rise, fruit quality is better than freedom spindle shape ,small and sparse canopy shape, it is worth that the open stem and middle center shape's promotion in the apple orchard of the Weibei4.Apple quality factor in the best relative values of lightWith the method of the multivariate statistical analysis, using SPSS software establishment of apple quality and a polynomial to be relatively light and the regression equation and the canopy within the relatively light intensity, temperature, humidity and fruit quality of the relevant factors and the regression equation, apple has come to light quality factor in the best relative value, for the apple pruning mentioned a theoretical basis.