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1995年我们在乳山市夏初镇河南村进行葡萄套袋试验。纸袋采用台湾佳果牌葡萄专用袋,数量3万个。套袋时间7月10～15日,品种以巨峰为主。 操作方法:套袋前先行疏花疏果,将密挤的、小粒的葡萄疏除,然后喷一遍甲基托布津或多菌灵。在叶果上无露水时套袋。套袋选择强壮枝上的果穗。套袋葡萄与大田葡萄一样管理。不套袋葡萄9月20日开始采收,套袋葡萄10月7日开始采收,采收前不需除袋。据观察测定,不套袋葡萄烂果率10％左右,着色率40％左右;套袋葡萄烂果率1％左右,着色率80％以上;葡萄紫色光洁鲜艳,不套袋葡萄药剂斑斑,不洁不鲜灰蓬蓬的。套袋葡萄甜度高,不酸、不涩且有浓厚的芳香气味;不套袋葡萄甜度差、酸味重且带涩味。经测定,套袋葡萄含糖量比不套袋葡萄高2.3度。不套袋葡萄收购价每kg1.3元,市场价格每kg2.2～2.8元;套袋葡萄收购价每kg2.4元。市场价格5～6元。自然贮存比较,套袋葡萄不除袋贮存30天,果穗完整不掉粒,果梗发绿,大果序失水但不枯,而不套袋葡萄贮存10天,果粒散落80％以上,大果序、小果梗枯萎变黑。套袋葡萄较不套袋葡萄晚成熟10～15天,不仅避开葡萄销售高峰,而且延长
In 1995, we carried out grape bagging test in Henan Village, Xia Chu Town, Rushan City. Paper bag Taiwan fruit card grape dedicated bags, the number of 30,000. Bagging time July 10 to 15, the main varieties to Kyoho. Method of operation: Sachet thinning before the bagging, the dense squeeze, small grapes sparse, and then spray over thiophanate or carbendazim. Bagging without dew on leafy fruit. Bag selection of strong branches of the ear. Bagged grapes and vines managed the same. Not bagging grapes began harvesting on September 20, bagging grapes began harvesting on October 7, without removing the bag before harvesting. According to the observation and determination, the rate of rotting fruit is 10% or so, the coloring rate is about 40%; bagging fruit rot rate is about 1% and the coloring rate is over 80%; grape purple is bright and clean, Neat and tidy. Bagged grape sweetness, not acid, not astringent and has a strong aromatic odor; bagging grapes poor sweetness, heavy sour and with astringency. It was determined that the bagged grape sugar content of 2.3 degrees higher than the non-bagged grapes. Not bagging grapes purchase price per kg1.3 yuan, the market price of 2.2-2.8 yuan per kg; bagged grape purchase price of kg2.4 yuan per kg. The market price of 5 to 6 yuan. Natural storage comparison, bagging grapes without bag storage for 30 days, the whole ear can not fall out of grain, fruit stem green, large fruit dehydration but not dry, without bagging grapes stored for 10 days, fruit scattered more than 80% Large fruit, small fruit stem wilting black. Bagging grapes late bagging less mature bagging 10 to 15 days, not only to avoid the peak sales of grapes, but also to extend