45results about How to "No frostbite" patented technology

The invention provides a refrigerator and a control method thereof. The refrigerator comprises a refrigeration chamber, a refrigeration system, an air channel, a fan, an air door and a controller, wherein the refrigeration system provides cold energy for the refrigeration chamber, the air channel and the fan conveys the cold energy generated by the refrigeration system into the refrigeration chamber, and the air door is arranged at the part, close to the refrigeration chamber, of the air channel. The refrigeration system comprises a compressor, a condenser, a throttling device and an evaporator, wherein the compressor, the condenser, the throttling device and the evaporator are sequentially connected. The refrigeration chamber has a cold storage mode and a freezing mode. The refrigerator further comprises a regenerator, a first temperature sensor and a second temperature sensor, wherein the regenerator is arranged close to the evaporator or located in the air channel, the first temperature sensor is used for sensing the temperature of the regenerator and the second temperature sensor is arranged in the refrigeration chamber and used for sensing the temperature of the refrigeration chamber. When the refrigeration chamber is in the cold storage mode, the process that the compressor is started to provide the cold energy for the regenerator and the process that the regenerator provides the cold energy for the refrigeration chamber are carried out alternately, and therefore the beneficial effect of preserving freshness and protecting food against frost damage can be realized.

The invention relates to a method for grafting mulberries in cold regions. The main problem influencing mulberry farming and silkworm rearing in northern areas is the mulberry breeding in winter. At present, grandifoliate mulberries which can survive below the temperature of 20 DEG are not available so silkworm breeding industries in the northern areas have larger restrictions, and tussahs are bred in only a few areas. The process of the invention comprises the following steps of: (1) breeding wild mulberry seeds in northeast cold regions, selecting and using well-developed seeding roots having no freezing injury and cold injury as cold resistance root stocks, and adopting mulberry shoots subjected to three times of winter training as scion to graft; (2) putting the grafted mulberry seeding into the environment with the temperature of 22-25 DEG temperature and the humidity of 75% to carry out seeding germination; (3) moving seeding stocks successfully germinated into fertilized nursery bases to plant, wherein three million seeding stocks are planted in the nursery base per mu by keeping the line spacing of 25 cm and the row spacing of 3-5 cm, and covering the seeding stocks by plastic films for 20-30 days; (4) and performing nursery base weeding and field management for about one year. The method can be used for breeding the mulberries with strong cold resistance.

A desert control method solves the problem that the desert continues to expand, engulfs the land and harms the environment. The desert control method is characterized by putting sand into a common plastic bag until the half bag of sand, then sealing the bag mouth, and distributing each bag on the surface of the desert; planting trees or scattering grass seeds in the gap between the plastic bags so as to ensure enough supply of water for the trees, ensure that the root of the trees cannot be burned and frostbitten, ensure the survival rate of the trees, enable the ground not to continue to be in desertification and the trees to form a green barrier, and stop the ground from being damaged by the wind. The desert control method has the advantages of guaranteeing enough supply of water for the trees, ensuring the survival rate of the trees, and stopping the sand drain of the ground, and particularly is suitable for sand control application.

The invention discloses a temperate zone rose flower cutting flower branch logistics cold chain transport box, and relates to the technical field of logistics cold chains. The temperate zone rose flower cutting flower branch logistics cold chain transport box includes a box body, the top of the box body is covered with a box cover, the inner bottom of the box body is fixedly provided with a plurality of water storage mechanisms in an equidistant array manner, the top of the left wall of the interior of the box body is fixedly connected with a water guide plate, the front and back ends of the water guide plate are fixedly connected to the front and back sides of the inner wall of the box body, the bottom of the water guide plate is fixedly connected with a plurality of water guide pipes atequal intervals, and the top ends of the water guide pipes penetrate through the top of the water guide plate. According to the temperate zone rose flower cutting flower branch logistics cold chain transport box, after flower branches are inserted into the water storage mechanisms, the cutting surfaces of the bottom ends of the flower branches are soaked into water, the water effectively preventslong-time direct contact between the cutting surfaces of the flower branches and cold air, the condition that the interiors of the flower branches are damaged by frosting of the cutting surfaces of the flower branches is avoided, and meanwhile holding bags shrink due to cold to hold the bottom ends of the flower branches.