Greenhouse nectar after shed management

1. Temperature and humidity control.

The temperature in the booth can be controlled by opening the tuyere and retracting the straw curtain. The temperature in the greenhouse is maintained at 5°C-15°C during the daytime, and not less than 2°C during the night: the daytime temperature is controlled at 18°C-22°C during the flowering period and 5°C-8°C at night; the daytime temperature is controlled at 20°C during the fruit expansion period. 25 °C, night temperature 8 °C ~ l0 °C; coloring period during the day temperature control at 20 °C ~ 27 °C, night temperature l0 °C ~ 15 °C; when the outside world when the night temperature is stable at 8 °C ~ 10 °C can stop the curtain or put half The curtain can be removed when the outside temperature is stable at 10°C~12°C.

The relative humidity during the dormancy period to flowering is controlled at 70% to 80%; the relative humidity at the flowering stage is maintained at about 50%; the relative humidity of the fruits during the growth period until the coloring period is controlled at 60% or less; when the humidity in the greenhouse is too high, the humidity can be adjusted by releasing air. Too low to spray, spray water or water.

2. Winter cut and control.

One branch culture. On one branch, one leaf bud was left for preparation, and one branch left the flower bud for the current year. In the coming winter, the branches left last year were left as a result, and the fruiting branches left a short preparation of leaf buds, which allowed them to be fixed and updated alternately at a certain position. 2 leave fruit properly. Generally, the short fruit branch leaves 1 flower bud short cut, the middle fruit stick leaves 2 to 3 short cuts, and the long fruit stick leaves 4 to 5 short cuts. 3 Total branch volume control. The number of branches and branches increased from row to row from south to north. The group of branches was cultivated according to the combination method of large, medium and small, and the branches with long branches and closed branches were removed. The angle does not open attention to use the back branch for extension head or pull branches and other methods to adjust. When the new shoot grows to 20 to 40 cm, it repeatedly picks up the heart, and at the same time eliminates the upright branches and the dense branches, and eases the formation of flower buds by taking branches and opening angles to ease the tree vigor. After harvesting the nectarine fruit in the greenhouse, the resulting shoots were timely retracted, which stimulated new branches and cultured into new fruiting branches.

3. Fertilizer management.

During the young fruit period, 0.3% urea solution was sprayed once. In addition to 0.3% urea solution, 0.3% potassium dihydrogen phosphate solution was sprayed during the hard core period. From the shed to the falling flowers should not be watered, the humidity within the shed should be below 60%, the hard core period and the fruit expansion phase each poured 1 times water, but the water should be suitable, should not be too large, so as not to prolong the new shoot, causing physiological fruit drop .

4. Flower and fruit management.

During the flowering period, artificial pollination should be carried out. During the flower bud stage, dense flower buds should be eliminated, and double flowering should be used to eliminate malformed flowers, late flowering flowers, and pest flowers. After 20 days from flowering, fruit thinning began and the fruits were evenly distributed. The short branch leaves a single fruit, the middle fruit branch leaves double fruit, and the long fruit branch leaves 3 to 4 fruit. During the fruit coloring period, suspending or supporting the drooping branches, the humidity in the shelter must be strictly controlled to prevent fruit drop and cracking caused by excessive humidity.

5. Pest control.

Immediately remove litter and weeds after winter cutting. Before warming up to germination, greenhouse disinfection using a higher concentration of insecticidal and sterilizing aerosols or spraying of 5 Baumeli limestone sulphur is required. After spraying, imidacloprid was used to control aphids after and after flowering. When the size of the fruit bean is reached, 50% carbendazim or 600 times liquid 80% of the students are sprayed again to control brown spot and anthrax. During the fruit development period, imidacloprid was used to control aphids, and avermectin series drugs were used to control leafhoppers. After removing the membranes, spraying avermectins to control leaf blast, spraying agricultural streptomycin or zinc sulfate lime liquid to prevent bacterial perforation, anthrax, and cure peaches. With carbendazim, 80% of students control fungal perforation.

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