篱架葡萄园光能截获量研究

试验测定了篱架葡萄园在生长期截获光能的情况。结果表明,有89 5%的冬芽和绝大多数叶片分布在高0 5~2 0 m的架面上,在开花后(5月23日),绿色面积可占到架面的71 02%,行距3 m、株距1 m、架高2 m、南北行向的篱架架面在生长季节1 d中截获太阳直射光照时间为7 7 h,0 5~2 0 m的架面上1 d中截获太阳直射光照时间为9 3 h。果园行间投射率为56 5%,架面对光能的截获率为43 5%,架面的透射率接近10%,果园总透射率为64 6%,对光能的总截获率为35 4%。如果将行距缩小为2 5 m,对光的截获率可提高9%以上。

Study on light energy capture in grapery with espalier form

Light energy capture in grapery with espalier form in growing season was determined. The result indicated that there are about 89.5% of the winter buds and most of the leaves distributed in 0.5～2.0 m in the espalier. Green area occupied 71.02% of the espalier after flowering (May 24th). In south-north row cultivation mode, when row distance was 3 m, plant spacing was 1 m and the espalier height was 2 m, in the growing season, light capture time of espalier was 7.7 h per day, and it was 9.3 h per day on 0.5～2.0 m of the espalier. Rate of light transmission in rows was 56.5%, Rate of light capture by the espalier was 43.5%. Rate of light transmission by the espalier was nearly 10%. total rate of light transmission was 64.6% in grapery, and total rate of light capture was 35.4%. Rate of light capture will increase by 9% if the row distance was reduced to (2.5 m.)