Fruit tree safe wintering management technology

1 , timely pouring frozen water

Before the soil is frozen, the fruit trees are poured with frozen water in a timely manner, poured into the ground to make the bottom sputum, fully satisfying the water demand of the tree. This watering is very important. After the tree body fully absorbs and stores a large amount of water, it can effectively slow down the transpiration of water in the winter tree, keep the tree body with enough water, and at the same time, improve the orchard microclimate due to the increase of soil moisture. It can also reduce or avoid sapling, pumping or death. For mature trees, pouring frozen water on the feet will benefit the germination, leaf and flower bud differentiation, flowering and fruiting in the coming year.

2 , buried in the cold or root neck soil

General to fruit trees buried cold in north China or crown of earth time in late November (snow festival).

1. buried cold method: (1) poor resistance to cold saplings newly planted soil before freezing, can be directly pinned gently, buried with fine soil, mulch thickness of the branches 15 to 20 cm. Note that when the soil is buried, the surface of the soil should be smooth and tight, and the wind will not leak. (2) The vines should be trimmed, dropped, dug, and buried before winter. The depth, width and length of the ditch are determined by the size of the tree. Generally, the depth and width are 30 to 50 cm, and the thickness of the surface layer is 15 to 20 cm.

2. Root neck culture method: newly planted young trees such as seedlings are large, the branches are hard and can not be pressed down, and the root neck soil can be cultivated. Chao is surrounded with fine soil and root dry base culture mound, mound 30 to 40 cm above the ground can also be cultured in root dry north 50 to 60 cm high crescent soil ridge, to change the microclimate around the root thereof Conditions to increase soil temperature and reduce frost damage.

3 , the trunk is painted white

In winter, due to sudden changes in temperature and temperature, the sunny side of the trunk or branch of the fruit tree is exposed to the sun during the day, the local temperature rises, the bark cells are active, and the nighttime temperature drops sharply. The bark tissue cells are too late to adapt, causing tissue to be frozen and necrotic. Become a "day burn". After the trunk is painted white, the white reflected light can be used to refract the heat back to a part. The temperature of the tree does not rise quickly and remains stable, and there will be no freezing and freezing, which can reduce or avoid the occurrence of daily burning.

The whitening time is twice as good as the first time after the fruit trees are deciduous until the soil is frozen, and the second time is in the early spring. The white-coated part is mainly trunk, and the sunny side of the diseased tree and trunk branches should be painted. Do not apply on the shoots or new branches to avoid burning the buds.

White-formulations and methods of use: 10 parts of lime, lime sulfur 2 parts, 1 part of salt, 2 parts of clay, 36 to 40 parts of water. First, hydrate the lime, filter the slag, pour the salt into the salt, and mix it with the stone sulphur mixture and clay. The salt mainly acts as a deliquescence, which can prevent the cracking and peeling after the coating, the clay plays an adhesive role, and the stone sulfur mixture can kill the wintering eggs and prevent pests and diseases. The preparation of the coating liquid should be dry and moderate, so it is better to not lose when painting. When applying, it should be meticulous and thoughtful, so that the whitening agent can penetrate into the skin seam, especially the diseased branches, bark seams and branches should be painted.

4 , grass handle, wrapped in newspapers or wrapped in plastic, etc.

Tree species and varieties that are poorly cold-resistant in the front and back of the house and in the courtyard, such as pomegranate trees and vines, should not be buried. This method can be used to prevent cold. Time is generally carried out in late November (snow festival).

method:

  (1) Pomegranate tree: It can be bundled with grass or wrapped in chicken skin bags. The big tree is wrapped around the main trunk, the main branch, and the young trees are all wrapped up.

  (2) vines: can be wrapped around newspapers or wrapped in chicken skin bags, large trees, small trees, trunks, main branches, side branches, etc. as much as possible.

5 , timely removal of snow in the rhizome

Some tree species and varieties have poor cold resistance. Once the roots and necks are covered with snow for a long time in winter and spring, they melt during the day, freeze at night, and freeze and freeze. Over time, the epidermis of the root and neck will be frozen and cracked. Eventually it turned black and even the whole plant died. In this case, the snow in the roots and necks of the trunk can be removed in time.

 

 

 

 

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