Scientific winter irrigation can increase the soil water content of fruit trees, and use the latent heat released by the trees and the condensation heat of soil water, which can not only improve the cold resistance of fruit trees, ensure the safe wintering of fruit trees, but also accelerate the decomposition of soil organic fertilizer and improve soil fertility. But the blind winter tube will also play the opposite role, so be sure to master the following winter tube points.
1. Winter irrigation is carried out after fruit harvesting until the soil is frozen, but the average temperature is 5 °C in 5 cm soil layer and the temperature is 3 °C.
2. The amount of irrigation should be such that the water can penetrate into the ground on the day after irrigation. The water seeps into the root distribution layer, that is, the young tree infiltrates to 20 cm to 60 cm, the adult tree infiltrates to 70 cm to 100 cm, and the soil moisture maintains 60% to 80% of the large water holding capacity in the field.
3. In the orchard with sufficient water source and sufficient water irrigation, the irrigation method with simmering or circular ditch can be adopted; in the orchard with insufficient water source and poor condition, the disc-shaped soil can be re-irrigated around the canopy; the orchard with drip irrigation and sprinkler irrigation conditions, The effect of drip irrigation and sprinkler irrigation is good.
4. Irrigation with the use of roots and tree guards together, can produce powerful immunohistochemical antibodies, can promote the infinite development of plant roots, can promote the matching of plant nutrient elements to facilitate the delivery. It can induce virus agglomeration, provide targeted disinfection for the general tree, inhibit the virus-transformed infection of the roots of the fruit trees, and control the health of the plant transport system.
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