Formula for whitening fruit trees in spring

Formula of whitening agent for fruit trees in spring: 5 kg lime and 0.5 kg lime-sulfur mixed slag are added with 25 kg water and 0. 1 kg salt, and fully stirred evenly.

Whitening agent function:

1, control pests and diseases, delay tree germination and avoid sunburn.

2. In the continental climate region where sunshine and temperature change dramatically, painting white can weaken the absorption of solar radiation heat by the aboveground parts of trees, thus delaying the germination period of buds.

3. Whitening will reflect sunlight and avoid the increase of local humidity of branches, thus effectively preventing sunburn. Painting willow trees white immediately after planting can also prevent and control stem borers and skin canker.

Extended data:

Fruit trees enhance cold resistance;

1, topdressing outside the root:

After harvest, topdressing can be done outside the roots in time by spraying a mixture of 0.2-0.3% potassium dihydrogen phosphate and 0. 1% natural brassin.

2. Coverage:

Covering the orchard with wheat straw, rice straw and corn straw in time after winter can not only prevent the cold wind from attacking the roots, reduce the freezing damage, but also reduce the evaporation of soil moisture, and play a role in preserving moisture and increasing temperature. After the plastic film decays, it can also become an organic fertilizer for the growth of trees.

3, ridging:

The roots and necks of fruit trees are easily frozen. Cultivating 10 ~ 20cm fruit trees and peeling them after spring can effectively resist the invasion of cold, especially young trees, and avoid freezing injury.

4. Parcel luggage:

Wrap the trunk and branches with straw rope, or wrap the trunk with straw

5, pumping antifreeze:

It is used at night when the weather drops sharply, using chaff, broken straw and so on. Light it around midnight 12, pay attention to fire control, and it is appropriate to use dark fire and smoke. Generally, 3 ~ 4 fire spots can be lit per mu of orchard, so that the smoke can completely cover the orchard, so as to slow down the heat dissipation on the ground and increase the heat in the air.

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People's Network-Main technical measures for fruit trees to prevent cold in winter