Develop strong autumn shoots. Autumn shoots are the main branches of the longan in the coming year, and they are also one of the main shoots of the longan overwintering. Whether the autumn shoots are robust affects their ability to withstand cold in winter. Therefore, the last autumn shoots of longan are generally controlled to be released in mid-to-late October. It is advisable to thinly apply 1 nitrogen fertilizer and pour water before putting on the shoots, and put them together in a uniform manner to fight for all the autumn shoots in mid-December. Robust autumn shoots increase nutrient accumulation in the tree, effectively resisting cold currents.
Do a good job in winter gardens and white trunks. (1) Clear dead leaves: After the old shoots are ripe, spray them with a flow rate of 0.9-1.2 Baume to prevent overwintering. (2) Trunk whitening: Lime 10 kg, sulfur powder 1 kg, add water 30-40 kg, stir evenly, transfer into a paste, paint the trunk and the first and second branches, can effectively reduce the freezing injury.
Tree trays. Combined with the deep-turning of the clear garden in winter, the 100-meter-diameter inner-tree paving pond mud, turf, etc. of the tree tray is used for the Peony, and the height is 10 cm above the trunk grafting interface, which can effectively protect the grafting interface.
Straw bales tied. (1) In the winter of 120 cm in the diameter around the tree tray, cover with straw, straw, rape stalks and other 10-15 cm thick, or covered with plastic film, can increase the temperature of the soil. (2) The binding of the trunk and the first and second branches with rice straw can play a role in tree conservation.
Orchard irrigation. Before cooling, divert water into the orchard to carry out the irrigation of the whole garden. After irrigation, the water will be drained and the trees will be sprayed with 100 to 120 kg of water per tree. This will increase the water content of the trees and increase the water content of the trees. Air humidity, increase the temperature, and reduce frost damage.
The orchard smokes smoke. Before the onset of the cold current, the orchards prepared flammable smoke, such as chaff, sawdust, and turf, and put one pile every 10 meters, mixed with a small amount of waste diesel, to increase the smoke heat, and ignite after 22:00 on the night of the cold weather. Smoke, warming with smoke, insulation and frost protection.
Water spray antifreeze. In the event of wet freezing, humans should be quickly organized, shake off ice from the trees and spray frozen water.
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