First, increase the organic fertilizer, and timely supplement the nutrients needed by the tree. Before the big cold, dig a ditch or a radial groove at the crown of each tree, with a ditch depth of 60cm. Each plant applies 10 kg of organic fertilizer, 1.5 kg of potassium sulfate, 1.5 kg of calcium, magnesium and phosphorus. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Shanghai J.Shine Co.,Ltd , https://www.jshinechem.com
Second, the tree pocket soil, soil height to exceed the grafting interface and 35cm above the ground is appropriate, the second year after the spring frost break.
Third, the tree canopy cover, with the membrane or weeds to cover the tree plate, conditional can crown coverage. It can effectively improve the cold resistance of the tree. In case of snow and ice, it is necessary to shake off the snow on the canopy. The citrus saplings should be covered with straw or other weeds. Generally, they are made of triangles with bamboo sticks or sticks, and straws or miscellaneous materials are used on three sides. Surrounded by grass, it forms a triangular shed that opens to the south or southwest. The whole citrus tree is wrapped in the shed. The citrus nursery should be covered with plastic or straw before heavy snowfall.
Fourth, the trunk is coated with white, with salt 0.2kg, lime 1.5kg, sulfur powder 0.3kg, add water 5kg, transferred to a paste, brush the white trunk, brush white height to the first main branch below.
Five smoke and cold, before cooling, in the park piled branches, weeds and chaff, etc., with the earth pressure into smoked stack, leaving ignition and smoke exit, before freezing the critical temperature ignition smoke, smoke, can prevent Frost.
In case of six rain and snow conditions, the snow and ice on the trees should be promptly removed to minimize the direct contact time between ice and snow on the leaves and trunks of citrus, and reduce cold and freezing damage.
Immediately after the freezing, the frozen shoots were trimmed and the potassium dihydrogen phosphate foliar fertilizer was sprayed after recovery.
Eight weeding and clear gardens. Orchard weeds and land are habitats for many wintering pests. Clearing weeds in orchards in time will greatly reduce the risk of plant diseases and insect pests in the coming year. Healthy trees will enhance cold resistance. After the fruit is picked, timely weeding and clearing the garden.
After the spring of the second year of the year, select the sunny day to restore the trees in time, and open the “skylight†to the shade trees. Allow some sunlight to directly pass through the ground, then cut off the late autumn shoots, frostbite shoots, fruit residue, disease and insect branches, cross branches, thin and weak branches, overlapped branches and pasted branches that have not turned green, and harvest the unharvested fruits as soon as possible. , And cut off the remaining fruit left in the tree.
Tenthly, the pruned branches and branches of pests and insects are concentrated and destroyed. In areas where gum disease, foot rot, and other tree trunks are harmed, the eggs and lesions of the tree trunk are first scraped off with a knife, then the disinfectant is sprayed, and sulphur is used. Agents such as insulation and antifreeze.