1. Before and after harvesting fruits, use a quick-effect fertilizer to water the roots, and apply 0.2%--0.3% potassium dihydrogen phosphate plus 0.5% urea mixed solution or chitin compound fertilizer to supplement the nourishment, to promote rapid restoration of tree vigor and increase. Accumulation of accommodating, the tree grows robustly, strengthens the cold resistance, applies the organic fertilizer to keep warm after picking fruit. Second, earthworms: After picking the fruit combined with pruning clean garden, digging soil fertilization, selection pond mud, river mud, field soil, etc., for rhizome tree disk soil, 20-30 centimeters thick, mulch root temperature antifreeze. Third, irrigation Po insulation. Drought-causing orchards, 10-20 days prior to low-temperature freezing, where conditions permit, ditching and filling the water, the crown can be sprayed during the defrost period, and the water insulation can be used to reduce the freezing damage. Fourth, chemical antifreeze. Before the advent of low temperature, the tree crowns were sprayed with paclobutrazol to evaporate water from the leaves and reduce the heat loss of the trees and reduce the degree of frost damage. Fifth, soil coverage. Before the advent of cold weather, the land was covered with mulching through cultivation, and soil cooling was reduced to protect the root system from freezing damage. Sixth, protect the tree. 1. Covering the crown: The whole plant is wrapped in the grass to prevent direct frost damage. 2. The trunk is painted white: 5 kg of lime + 10 kg of water + 0.5 salt + 0.1 kg of sulfur + bactericide is used to prepare the whitening agent, and the trunk is painted white in December, and the dry 60 cm is applied. The exposed branches and wounds are also required. Paint white and protect the main stem. Seventh, the smoke increases the temperature. Looking at the weather forecast, using fireweed, husks, sawdust, dried oranges, etc., set 4-6 smoked stacks per acre to ignite and burn fumes before the onset of cold spells or defrosts to form a smokescreen over the orange orchard. The system produces radiation and defrosting, at the same time, it can directly increase the temperature of the orchard to reduce the freezing injury. Auto Hematology Analyzer,Clinical Hematology Analyzer,Blood Analyzer Hematology,Hematology Analyzer Guangdong Widinlsa International Co.Ltd , https://www.widinlsa.com