温室栽培的黄瓜在生长后期,瓜条经常弯曲不直,影响了商品外观价值及产量。瓜条弯曲发生的原因主要有机械原因和生理原因两种。机械原因是由于果实生长发育时受到地面、支架、茎叶等障碍,影响了正常的下垂生长,造成弯曲;生理原因由瓜条内细胞纵向分裂或膨大不均匀造成,细胞分裂膨大较快的一侧,伸长较快,另一侧较慢,因此弯曲。导致瓜条内细胞膨大和分裂不正常的原因如下:一是授粉不良,授粉不均匀。授粉较充分的一侧细胞分裂多而快,另 Greenhouse cucumber cultivation in the late growth, the melon often not curved, affecting the appearance of the product value and output. Melon bending occurs mainly due to mechanical reasons and physiological causes of two. The mechanical reason is that due to obstacles such as the ground, the support, stems and leaves, the growth of the fruit is affected by the normal drooping growth and causing bending; the physiological reason is caused by the longitudinal division or uneven enlargement of cells in the gingival strips, Side, faster elongation, the other side of the slow, so curved. Lead to melon pieces of cell expansion and division are not normal for the following reasons: First, poor pollination, pollination uneven. The more fully pollination cell division more quickly, and the other