柑桔的日灼病又名日烧病,多发生在近成熟的果实上。是夏秋伏旱高温季节强光直射烧伤果皮引起的生理性病害。急性日灼病在雨天易感染炭疽病菌,引起腐烂落果。不脱落的果实,由于果皮伤坏死,病部生长停滞,果皮变厚变粗糙,并部分木栓化,或龟裂,果形不正,果实内部发育不良, Sunburn citrus, also known as the Japanese burn disease, occurred in nearly mature fruit. It is a physiological disease caused by direct sunlight and direct skin burns in summer and autumn during the drought and drought season. Acute sunburn is susceptible to anthrax bacteria on rainy days, causing decay and decay. Not falling off the fruit, due to skin injury necrosis, stagnation growth of the disease, peel thicker and rougher, and some corked, or cracked, fruit shape is not good, poor fruit internal development,