葡萄采收前常发生裂果现象,尤其以果实成熟后期多雨时更为严重裂果不仅影响果实的外观,而且会导致外源微生物的侵染,发生腐烂,严重降低了果实的商品价值,是生产中不可忽视的生理病害 一、裂果的种类与表现 品种不同,裂果发生的部位及类型也不一样。一般分为密粒型(“玫瑰露”)及稀粒型(“巨峰”)二种裂果。 密粒型裂果是因早期果粒密接,生成木栓龟裂,随着果实发育,由果皮和根部大量吸水产生粒内膨压,而在果粒接触的龟裂部分裂果。稀粒型裂果是在果皮强度较弱的果顶或果蒂附近,大量吸水促其裂果有时坐果多,裂果也多稀粒型裂果有三种情况:一是果顶部裂开,发生在柱头痕迹部位,果汁很少外溢,基本不传染好果,危害较小,但发生较为 Grape harvest often occur before the cracking phenomenon, especially in the latter part of the fruit ripening more severe rain not only affects the appearance of fruit, but also lead to the invasion of foreign microorganisms, decay, seriously reducing the value of the fruit commodity is the production Physiological diseases that can not be ignored First, the type and performance of split fruit is different, the location and type of split fruit is not the same. Generally divided into dense grain type (“rose dew”) and thin type (“Jufeng”) two kinds of split fruit. Particle-type cracking fruit is due to close early fruit, the formation of cork crack, with the fruit development, from the peel and the roots of a large amount of water absorption produce intragranular turgor, and in the fruit in contact with the cracking part of the fruit. Scattered thin fruit peel in the pericarp is weak in the vicinity of the fruit or the fruit pedicle, a large number of water absorption to promote the fruit and sometimes fruit-bearing, fruit cracking and more spider-shaped fruit there are three cases: First, the top of the fruit cracking, occurred in the stigma of the site , Juices rarely spill, the basic non-contagious good, less harmful, but more