1.高温障碍白天气温超过35℃,甚至达到40℃,持续时间4小时以上,夜间气温在20℃以上,同时伴有空气干燥和土壤缺水,就会造成叶片表皮组织细胞被灼伤,致使茎叶干缩。此时叶片通常出现黄色至浅黄褐色不规则形病斑,叶缘出现漂白色,后变为黄色。轻者叶缘受到伤害,重者危及半个甚至整个叶片,形成永久性萎蔫或干枯。果实受害出现日烧果。露地栽培条件下,栽植密度小,植 1. High temperature disorders During the day the temperature exceeds 35 ℃, even up to 40 ℃, duration of more than 4 hours, night temperatures above 20 ℃, accompanied by air-drying and soil water shortage, it will cause the leaves epidermal cells were burned, resulting stem Leaves shrink. At this time the leaves usually appear yellow to light brown irregular spots, leaf edge bleaching, yellow later. Light leaf edge damage, severe endanger half or even the entire leaves, the formation of permanent wilting or dry. Fruit damage occurs on the burning fruit. Open field cultivation conditions, planting density, planting