The apple covers paper bag short branch to reach a red Fuji enough 100 days, long branch red variety can be retreated 90 days quite green, can take off bag. Think commonly growth of red Fuji gains period 180 days or so, carrying city fruit area will be October commonly the last ten-day of a month is collected close. Because on any account of altitude of countrywide each district is different, microclimate environment is different, red, piece red different, take off speed of the chromatically after bag different also. Take off bag time time different also. For example: Altitude the fruit area of 1000 meters of above, take off bag hind piece the fruit of large Chinese hawthorn, want difference in temperature only humidity is big, big, general 5 days of fructification can achieve 3 ～ completely red, the fruit of large Chinese hawthorn arrives 10 days half moon completely can red. But in altitude 600 meters of the following fruit areas, piece the fruit of large Chinese hawthorn takes off bag hind 10 days to arrive half moon ability is completely red, the fruit of large Chinese hawthorn needs 25 days to arrive 30 days ability is completely red. Because area of fruit of low height above sea level takes off bag hind, time of slow, chromatically grows chromatically, short without time of chromatically of high height above sea level, face is nice, have brightness.
Each district takes off bag of time
In area of carry city fruit, because major orchard height above sea level is low, take off time of the chromatically after bag to grow, if the last ten-day of a month will be collected in October if really, should the last ten-day of a month was taken off in September bag. Area of fruit of high height above sea level, because difference in temperature of day and night is more than low height above sea level, chromatically is fast, can defer appropriately bag, and because Gao Hai unplugs fruit area sprouts than low height above sea level, blossom late, stop long early, annual light adds up to time weak point, if really comparative low height above sea level is small, defer appropriately bag is picked, still be helpful for fruit is grown.
Take off difference in temperature and humidity should notice when bag
① takes off the difference in temperature after bag under 5 degrees, not chromatically, still fade; Temperature under 10 degrees scarcely chromatically; Difference in temperature is jumped over more than 10 degrees much, chromatically is faster. Area of carry city fruit, because height above sea level is low, the last ten-day of a month took off bag hind in September, calendar year comes difference in temperature is 11 ～ 13 degrees, sometimes 14 degrees have 1 ～ 2 days only, retreat again return 13 degrees. But altitude exceeds 1000 meters fruit area, in September the last ten-day of a month or the first ten days of a month will take off bag hind in October, difference in temperature is 14 ～ 17 degrees, big chromatically of difference in temperature is so fast.
② humidity also can affect chromatically speed. Carry out a proof: Air humidity big, chromatically is fast, no matter altitude on any account is same. Area of fruit of island of emperor of the Qin Dynasty of Yantai, Heibei, elevation has a few meters to arrive more than 100 meters high only, still chromatically is fast. Because they are maritime climate,this is, air humidity is big, chromatically is so fast. No matter altitude discretion, air is dry, chromatically is slow. Humidity does not have difference in temperature or difference in temperature is small, chromatically is unhappy also, difference in temperature is big but do not have humidity chromatically slow also. So difference in temperature go up substantially humidity is big also, chromatically just is met fast.
Take off the size of inside 5 days difference in temperature after bag, decide chromatically speed
Take off weather forecast listens before bag: The difference in temperature inside 5 days is more than 10 degrees of above, ability is taken off bag. Practice proved to take off the 5 inside the day difference in temperature after bag to be less than 10 degrees not chromatically. Although 5 day hind have difference in temperature, chromatically is bad also, the likelihood is peel old, the reason is unspecified.
Temperature also is not taken off too high bag
Carry out a proof: By day 30 degrees, 35 degrees, in the evening 10 degrees, 15 degrees, difference in temperature 20 degrees, chromatically is unhappy also. By day 15 degrees, in the evening 2 degrees, 3 degrees scarcely chromatically. 25 degrees are controlled by day, 10 degrees are controlled in the evening, chromatically is the fastest. Because suit Xie Gongneng's temperature,this is it is 18 degrees go to 30 degrees, the strongest foliaceous function temperature is 25 degrees are controlled. Synthesize the reason with carbohydrate much material, chromatically is so fast.
Take off bag of commodity 2 times rate is high
Carry out a proof: Take off paper bag first outer, the bag inside is taken off again after 3 days, fructification has to get used to a process. Unapt in the environment in darkness, expose suddenly point-blank below sunshine, especially fruit of pure paper bag, take off bag comparing 2 times bag is good.
Take off lower level bag first, superstratum bag is taken off after
Take off lower level bag first, superstratum bag is taken off after, can prevent premature drop is touched when bag, take off the bag austral the tree in the morning, take off the bag that cultivate north afternoon, had better pick a cloudy day or cloudy take off bag. Stop when temperature is too high midday bag.
Subterranean humidity also decides chromatically speed
Proper and arid benefit at chromatically, moisture affects chromatically too much, too arid chromatically is bad also. When blowing fresh gale, do not take off bag, the chromatically of fast, influence with old peel.
Take off bag hind filling calcium to make drug
Take off bag hind to hit medicine to add calcium immediately, protect bacteria of fruit prevention and cure to invade namely catch, take a tonic to build up health. Still can prevent the happening of crackle of prevent floods by water control, raise commodity rate.
Think those who say is finally: Take off bag not too early, cannot too late, arrived September 10 20 chromatically are the fastest, everybody must remember You!
