苗期机械拂擦处理对蔬菜植株生长和发育的影响

The Effect of Mechanical Brushing during Seedling Stage on the Growth and Development of Vegetable Plants

探明育苗期应用机械拂擦处理代替植物生长延缓剂矮化植株、控制幼苗徒长的可能性。机械拂擦处理强度通过接受处理时间迟早及塑料刷片密度高低来调节。结果表明机械拂擦处理显著延缓植株生长 ,缩短植株节间长度 ,提高茎粗和株高比。甜椒、番茄、黄瓜对机械拂擦处理的敏感性不一 ,生长延缓程度随着处理强度的增加而增加。机械拂擦处理对始花期有一定的影响 。

The aim of the present research was to determine the possibility of the application of Mechanical Brushing (MB) during the nursery to prevent excessive growth instead of plant growth retardants. The intensity of MB was regulated by the time when the seedlings were subjected to MB and the density of the plastic slices. The results showed that MB significantly retarded plant elongation,reduced the intertruss length and increased the ratio of stem diameter to plant length. The sensitivities of sweet pepper,tomato and cucumber to MB are different. There was an increase in inhibition of elongation with an increase of MB intensity. The anthesis was a little affected by MB,but not the yield.