D.S.多德和D.C.弗里1978年对以Mg为砧木的成年元帅红色芽变(无名)品种,用反光器、树上照明和遮阴材料改变有效光照。树下反光器在花期增强树冠内部光照20％,生长中期增强10—30％,成熟期增强35％。树冠遮阴,开花时树冠内部光照减弱20％,其它生长期减弱10—20％。遮阴后座果率下降62％,反光器则无影响。遮阴减少红色果的色泽,反光器处理增进了果实色泽,特别是树冠下半部更是如比。遮阴减少了总产量和可溶性固形 D.S. Dodd and D.C. Free In 1978, the adult marshalled red bud mutant (anonymous) cultivar with Mg as rootstock was used to alter the available light with reflectors, tree lighting and shading materials. Under the tree light reflectors to enhance the internal crown of flowering 20% ​​light, 10-30% increase in the mid-growth stage, 35% increase in maturity. Canopy shade, flowering when the crown of the light weakened 20%, other growth weakened 10-20%. Shade fruit rate decreased by 62%, the reflector has no effect. Shade to reduce the color of the red fruit, light reflectors to enhance the color of the fruit, especially the lower half of the crown is even more than. Shading reduces total yield and soluble solids