柑桔果实在贮藏运输中腐烂损失常达10％左右,严重者达30％以上。无产阶级文化大革命以来,我们实行“三结合”,进一步开展了柑桔防腐处理的试验。结果证明,2,4-D可以防止贮藏中果蒂干枯,控制甜橙蒂腐和桔类黑腐;多菌灵和托布津是防治绿、青霉菌的有效杀菌剂。1973年,此项处理技术已在主要柑枯产销地区推广应用。一、2,4-D处理控制蒂腐、黑腐蒂腐和黑腐病菌主要经过干枯果蒂侵入果实腐烂为害。用适当浓度2,4-D处理果蒂,可以抑制离层形成,在贮藏期中保持果蒂新鲜,防止病菌侵入。 (一)处理时期和浓度分采前和采后两次处理。采前1个月左右用50-100ppm(如用机动喷雾器,因喷药量大,宜采用50ppm)处理,采后3天内用100-250ppm处理的,效果最好。 (二)处理方法关键在于使药液接触果蒂。采后用喷、洗、沽、刷都可,但注意不要浸泡时间过长,洗果时宜浸湿后即取出。采前处理着重喷洒果实,特 Citrus fruits in the storage and transportation of decay loss often up to 10%, in severe cases up to 30%. Since the Great Proletarian Cultural Revolution, we have implemented the “Three Combinations” to further carry out experiments on preservative treatment of citrus. The results show that 2,4-D can prevent the fruit dry during storage, control the rotten orange leaves and orange black rot; carbendazim and Topaz are effective fungicides against green, Penicillium. In 1973, this treatment technology has been promoted and applied in major citrus producing and selling areas. First, the 2,4-D treatment control decay, black decay rot and black rot bacteria mainly through fruit stem rot dry fruit rot damage. With the appropriate concentration of 2,4-D treatment of fruit pedicle, can inhibit the formation of separation in the storage period to keep fruit fresh, prevent bacteria intrusion. (A) processing time and concentration points before and after the mining two processing. A month before mining with 50-100ppm (such as the use of motorized sprayer, due to the large amount of spraying, should be used 50ppm) processing, mining within 3 days with 100-250ppm, the best. (B) The key is to make the liquid contact with the fruit pedicle. After harvesting with spray, wash, sell, brush can, but be careful not to soak too long, should be removed when washing fruit should be soaked. Pre-harvest treatment focused spray fruit, especially