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作者把果树叶幕看成一个需光系统,根据太阳照射几何原理和视运动规律、坡度α、坡向β对果树叶幕遮光的影响和果树合理密植的原则,推导得出栽培果园中果树叶幕对株间和行间遮光系数的计算公式,依次为: G_x, α β=sin(A-β)(sinα十cosα.tgh), C_y,α,β=cos(A-β)/(sinα+cosα.tgh)。上式中, A=arcsin(cosδ.sinω/cos h). h=arcsin(sinφ.sinδcosφ.cosδ.cosω)
The author considers the foliage of fruit trees as a light-demanding system. According to the geometric principles of the sun and the laws of visual movement, the effects of the slope α and the slope β on the shading of the fruit leaves, and the principle of close planting of the fruit trees, The formulas for calculating the inter-plant and intercalary shading coefficients are as follows: G_x, α β = sin (A-β) (sinα + cos α.tgh), C_y, α, β = cos A - β / + cos α.tgh). In the above formula, A = arcsin (cosδ.sinω / cos h). H = arcsin (sinφ.sinδcosφ.cosδ.cosω)