The cultivation of greenhouses has been promoted in recent years. The cultivation of plums in greenhouses has been continuously promoted. However, the yield and quality of plum trees in some solar greenhouses have declined. This is mainly due to the influence of climate control in greenhouse cultivation. Therefore, its cultivation techniques and measures should be further studied to ensure the production and quality of plum trees. Temperature and humidity monitor in the solar greenhouse temperature and humidity control and monitoring is very effective.
After analyzing the relevant parameters in the solar greenhouse through the temperature and humidity monitor, it was found that the regulation of the temperature, humidity, and phosgene conditions in the greenhouse is generally 700 to 1000 hours for the early maturing plum varieties, and the end of November to December for the plum trees in the Hexi area of ​​Gansu Province. The natural dormancy can be completed in the early days, and the shed is the most suitable. After the shed is gradually heated up, in the first week, 1â„3 of the straw curtain is pulled up, and 2 are pulled one by one. The temperature inside the greenhouse is 18~20e during the day and 5~8e during the night. In the 2nd week, 2/3 straws are pulled. Each room is pulled one at a time. The temperature in the greenhouse is 20}22e during the day and 8}10e during the night. The grass is pulled up from the third week until flowering. The temperature in the greenhouse is 20}22e during the day, and the temperature in the greenhouse is 10-12e. The flowering period is 20 during the day. }25e, 10-12e at night, young fruit during the daytime 20}28e, nighttime at 12}15e, fruit enlargement during the daytime at 25}28e, nighttime at 15}18EO relative humidity in the greenhouse, after the shed, 60% to 70% before flowering, 50% -60% flowering time, after flowering to 70% of fruit harvesting, indoor light sources are used to supplement light, greenhouse back wall is covered with reflective film, and ground covers are used to adjust indoor light to increase C fertilizer, in order to ensure the photosynthesis of Li Shu. The need for the application of fertilization basal fertilizer was applied in the first sentence of June, along the tree line to dig deep 40 to 50cm fertilization ditch, the plant applied fully decomposed sheep manure 30kg. Phosphate fertilizer 1kg top dressing according to the needs of plum growth, 7 days before flowering nitrogen application Phosphorus compound fertilizer 013kg, NPK compound fertilizer 015kg in hard-nucleation stage, NPK compound fertilizer 015kg after fruit-picking, spraying potassium dihydrogen phosphate or urea every 15 to 20 days in the whole growing season. ~3 times.
Flower and fruit management flowering period uses the method of releasing wall bees, artificial spotting and other methods to assist in pollination, to increase the fruit setting rate before flowering, 3 to 5 days and flowering period, spraying 013% urea, 1013% borax, 2~3 times every 5~7 days; Fruit spraying 013% potassium dihydrogen phosphate 2}3 flower buds to eliminate small flower buds, fruit thinning after physiological fruit drop, sparse and fruit, malformed fruit, small fruit, generally long fruiting branches to retain 6} 8 fruit, middle fruit branch Leave 3}5 fruits and short fruit sticks leave 1~2 fruits.
After analyzing the relevant parameters in the solar greenhouse through the temperature and humidity monitor, it was found that the regulation of the temperature, humidity, and phosgene conditions in the greenhouse is generally 700 to 1000 hours for the early maturing plum varieties, and the end of November to December for the plum trees in the Hexi area of ​​Gansu Province. The natural dormancy can be completed in the early days, and the shed is the most suitable. After the shed is gradually heated up, in the first week, 1â„3 of the straw curtain is pulled up, and 2 are pulled one by one. The temperature inside the greenhouse is 18~20e during the day and 5~8e during the night. In the 2nd week, 2/3 straws are pulled. Each room is pulled one at a time. The temperature in the greenhouse is 20}22e during the day and 8}10e during the night. The grass is pulled up from the third week until flowering. The temperature in the greenhouse is 20}22e during the day, and the temperature in the greenhouse is 10-12e. The flowering period is 20 during the day. }25e, 10-12e at night, young fruit during the daytime 20}28e, nighttime at 12}15e, fruit enlargement during the daytime at 25}28e, nighttime at 15}18EO relative humidity in the greenhouse, after the shed, 60% to 70% before flowering, 50% -60% flowering time, after flowering to 70% of fruit harvesting, indoor light sources are used to supplement light, greenhouse back wall is covered with reflective film, and ground covers are used to adjust indoor light to increase C fertilizer, in order to ensure the photosynthesis of Li Shu. The need for the application of fertilization basal fertilizer was applied in the first sentence of June, along the tree line to dig deep 40 to 50cm fertilization ditch, the plant applied fully decomposed sheep manure 30kg. Phosphate fertilizer 1kg top dressing according to the needs of plum growth, 7 days before flowering nitrogen application Phosphorus compound fertilizer 013kg, NPK compound fertilizer 015kg in hard-nucleation stage, NPK compound fertilizer 015kg after fruit-picking, spraying potassium dihydrogen phosphate or urea every 15 to 20 days in the whole growing season. ~3 times.
Flower and fruit management flowering period uses the method of releasing wall bees, artificial spotting and other methods to assist in pollination, to increase the fruit setting rate before flowering, 3 to 5 days and flowering period, spraying 013% urea, 1013% borax, 2~3 times every 5~7 days; Fruit spraying 013% potassium dihydrogen phosphate 2}3 flower buds to eliminate small flower buds, fruit thinning after physiological fruit drop, sparse and fruit, malformed fruit, small fruit, generally long fruiting branches to retain 6} 8 fruit, middle fruit branch Leave 3}5 fruits and short fruit sticks leave 1~2 fruits.