树木树冠阴影面积与种植间距的编程计算分析研究

Programming calculation on the crown shade’s area and planting spacing

主要是利用计算机编程软件Microsoft Visual C++6.0和现有的天文学公式以及对公式的分析计算处理,对决定树木所投射阴影大小起决定性因素的太阳方位角和太阳高度角进行编程化求解。然后根据所得出的实时数据和树木树冠模型化分析,最终计算得出不同的经纬度在某一时刻树木的投影面积,为果树等的合理种植间距分析提供依据。

This paper mainly described the programming solution of solar azimuth and solar altitude, the decisive factors of the tree crown area of shadow, by Visual C＋ ＋ software. Some astronomy formulas were used for the process of programming calculation and the calculation analysis. Based on the data obtained, the area of tree shadow in different latitude and longitude at a certain instant were analyzed. The result could be used as a reasonable planting spacing for fruit trees in the model.