First, the orchard cleanup First, the leaves that remain on the tree, stumps and stale fruits, broken branches and branches damaged by pests and diseases are cleaned up, and then the debris on the ground is completely removed, so as to leave as few leaves and one branch as possible. It was transported out of the orchard and buried or burned. Because the residual leaves still consume nutrients from the tree itself, contused or twisted shoots will cause unnecessary nutrient loss when the tree grows and develops next year. The eggs and bacteria that survive in large quantities in rotten or diseased branches will become infected early in the year. origin of.
Second, the fertilization in autumn and winter is applied with strip groove, ring groove and radial groove. The ditch is 60-70 cm deep and 30-40 cm wide. The length depends on the age of the tree or the type of fertilization. After the ditching, the entire plant or comminuted corn stalks are thoroughly mixed with manure, chicken manure, and phosphate fertilizer in the ditch. General requirements for each plant with straw 30-50 kg, 50-60 kg of organic fertilizer, phosphate fertilizer 3-5 kg, 2 kg of ammonium bicarbonate or the amount of biological bacteria fertilizer. Pay attention to minimize damage to fruit roots.
Third, pouring frozen water can be a one-time flood irrigation, can also be single plant watering. But it must be poured at one time. This can promote the decomposition of soil nutrients, and can eliminate pests, laying a good foundation for the growth of fruit trees the following year.
Fourth, tree protection measures 1. Branch painted white water 10 kg, calcium carbonate 4-5 kg, sodium chloride 0.5-0.8 kg, clay 0.1-0.2 kg, 0.5 kg of trichlorfon powder fully mixed, made of coated The white agent is evenly applied to the stem and the main branch with a brush. 2. After spraying the protective agent, the fruit trees are defoliated, and 200 times of polysulfide solution is used to add 1500 times 1605 fluid. The whole park sprays the tree body to eliminate overwintering apple rot, pear brown spot, ring vein disease, and red spider, pear. Star caterpillar and so on. 3. Wax wounds are formulated with 800 grams of rosin, 300 grams of alcohol, 100 grams of oil, and 50 grams of turpentine. The mixture is evenly mixed and smeared with a brush to provide better protection. 4. When the orchard insulates and winds cool, wind barriers are set up in the north and northwest of the orchard. Corn stalks or sorghum stalks can also be used to wrap each fruit tree; in cold weather, weeds can be moistened in the downwinds to make it abundant. When smoke is released, the smoke is generally diffused in the orchard, and the temperature can be increased by 3°C-4°C to avoid freezing damage to the trees. 5. Spray antifreeze From the end of January, 200 times the carboxymethylcellulose solution is sprayed on the fruit trees every half month.