"Cooling the cold" refers to the cold spell that occurred in March-April. Flowering apricots, plums, cherries, and other fruit trees are vulnerable to the "cold spring." Farmers can take the following measures to avoid in production: Spraying lime water: Spraying 1% of lime water 25-30 days before flowering can delay flowering for 3-5 days. However, the end of 1-2 days due to cold current can avoid cold current hazards. Irrigation to reduce the temperature: Before and after flowering, the fruit trees should pay attention to the weather forecast, water the plants before the cold, reduce the temperature of the soil, slow the growth of the fruit trees, and delay flowering for 2-3 days. Smoke and cold protection: At 2-3 o'clock on the night of the onset of the cold, firewood was lit around the orchard. Rare fires and smoke were common. A layer of smoke formed on the top of the orchard was kept until the sun came out to avoid the danger of cold currents. For fruit trees that have suffered freezing injury, the following measures can be taken to minimize losses: Artificially assisted pollination: Artificially assisted pollination should be carried out promptly for flowers that are not frozen and are still open. This is the first time to collect pollen in the refrigerator. Strengthen the management of fertilizers and waters: especially for those plots with severe frost damage at low-lying areas, we must pay close attention to the quick-acting nitrogen fertilizers, timely watering, promote the growth of fruit trees, and preserve the unfrozen flowers and fruits. Spray foliar fertilizer: After the occurrence of frost damage, the leaves will not be frozen normally, and the foliar fertilizer should be sprayed in time to enhance the photosynthesis of the leaves and leaves, and to produce more nutrients for the growth of fruit trees. A Bomb Calorimeter is a type of constant-volume calorimeter used in measuring the heat of combustion of a particular reaction. Bomb calorimeters have to withstand the large pressure within the calorimeter as the reaction is being measured. Electrical energy is used to ignite the fuel; as the fuel is burning, it will heat up the surrounding air, which expands and escapes through a tube that leads the air out of the calorimeter. When the air is escaping through the copper tube it will also heat up the water outside the tube. The change in temperature of the water allows for calculating calorie content of the fuel. Bomb Calorimeter Automatic Bomb Calorimeter,Bomb Calorimeter,Oxygen Bomb Calorimeter,Automatic Oxygen Bomb Calorimeter Unimedsume Trading Co., Ltd , https://www.ums-labmed.com