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黄瓜喜温不耐寒,在严冬至早春季节,常因严寒、寒流等受寒害或冻害,给黄瓜栽培带来巨大损失。一、症状1、冻害。短时间的0℃以下低温,使黄瓜植株受冻,叶片受到轻微冻害时,子叶期表现为叶缘失绿,有镶白边的现象,温度恢复后,不会影响以后真叶的生长;定植后受到冻害时,植株部分叶片的叶缘呈暗绿色,逐渐干枯,这种情况易在冬季或早春温室棚膜上的破洞未能及时修补,冷风
The temperature of the cucumber is not hardy, and in the harsh winter to the early spring, it often causes great losses to the cucumber cultivation due to cold or frost damage due to cold and cold current. First, the symptoms 1, frost damage. Short time below 0 ℃ low temperature, so that the cucumber plants were frozen, the leaves were slightly frostbite, the cotyledons showed leaf edge green, with white edge of the phenomenon, after the temperature recovery, does not affect the growth of true leaves after planting; planting After being frostbite, the leaves of plant leaves edge dark green, gradually dry, this situation is easy in winter or early spring greenhouse film holes in the patch failed to repair, cold wind