Determination of crown space in hedgerow orchard in different directions of sunny hill slope

摘要

In certain latitude areas, fruit growth is determined by the slope between 5° and 20°. According to the designed sunny slope direction and the parallel lines to the slope direction, we take two adjacent rows of the hedge to meet certain condition of the sun light, and draft the chart of shadow top contour based on the solar azimuth angle A and the coefficient of shadow length yto get crown space of the rectangular cross section in different ground of slopes. Then, the crown section lateral is changed to get mathematical models which determine the crown space of different cross sections in hedgerow orchard.