Management before dormancy of planting Peach trees in greenhouse

The forced dormancy of peach trees in greenhouse is usually carried out from mid-October to mid-November. The management of 10 days before forced dormancy in buckle shed is very important, and the management is poor, which directly affects the improvement of fruit setting rate, yield and quality. The key management measures for this period are as follows:

10 days before foliar fertilizer spraying forced dormancy, 3% to 5% high concentration of urea was sprayed on the leaf, and adhesives and osmosis agents, such as synergistic generals and special effects kings, were added to let the trees absorb certain nutrients quickly and lay a good foundation for future sprouting and expansion and peach blossoms. Spraying time should be carried out at 4: 00 p. M., pay attention to uniform and thoughtful spraying.

The growth period of peach trees in greenhouse was longer than that in open field, and the amount and times of fertilizer application should be increased and increased. The application rate of organic fertilizer per mu was 4000 kg, and the application rate of chemical fertilizer was half of that of the whole year, 0.2kg per plant, and the ratio of nitrogen, phosphorus and potassium was 10, 3, 4, 13, 16. Can first sprinkle chemical fertilizer and then apply crude fertilizer, turn 10 cm to 15 cm deep. It can also be ditched in the middle of two rows of peach trees (half of the rows are 1 to 1.2 meters apart), 10 to 15 centimeters deep and 20 centimeters wide.

On the third day after watering and fertilizing, water thoroughly, but not too much. Then cover the plastic film, and then only need to irrigate once in the young fruit stage, hard core stage and mature stage to meet the water needs of peach trees.

On the third day after watering, that is, the third day before the peach tree dormancy, cover the black plastic film with the same width as the row spacing of the peach tree, press the connection between the film and the film with soil, or use twigs at the edge of the film to prevent the wind from blowing off the film.

Two days before dormancy, the leaves should be stroked upward from the base of each branch. For the leaves that are difficult to control or tender in summer, they should be pinched off gently so that none of them are left. After stroking, clean the leaves out of the shed and bury them deeply.

Spray spray after stroking the leaves. The main diseases of peach trees are perforation, scab, gum disease, etc., which can be sprayed with 65% Dysen zinc or 50% forme arsine or 9281. The main insect pests are leaf mites, aphids, leaf miner moths, etc., which can be sprayed with 800 to 1000 times liquid to control agricultural pests. Fungicides and pesticides should be evenly sprayed on the trunk and branches of peach trees to reduce the source of infection of diseases and insect pests.