Early frost damage (cold spring) is a common disaster in the early spring in our province. The most effective measure to prevent cold damage in early spring is to pay close attention to weather changes and water before cooling. Since the heat capacity of water is greater than the heat capacity of air and soil, watering in the air near the ground can increase the water vapor before the cold flow in early spring. When condensation occurs, latent heat is released to reduce the temperature fluctuation of the ground. Therefore, in areas with watering conditions, watering before the cold wave can regulate the microclimate near the ground, which has a very good effect on preventing early spring freezing injury.
Wheat is a crop with tillering characteristics. Wheat fields that suffer from frost damage in early spring will not freeze all of them. In addition, wheat axillary buds can grow into long-term components. As long as the management is strengthened, a good harvest can still be obtained. Therefore, if cold damage occurs in the early spring, it must be promptly remedied. The main remedial measures: First, seize the time, chase fertilizer materials. For wheat fields that suffer from frost damage, according to the degree of damage, seize the time, apply fertilizer quickly, promote early-onset seedling growth, and increase the percentage of panicles of high-level tillers of 2 to 4 levels. Generally, about 10 kilograms of urea is applied to each acre. The second is to protect farmland and raise the temperature. Time cultivating, water storage and temperature increase can effectively increase the number of tillers and make up for loss of main stem. The third is the spraying of plant growth regulators. After wheat is frozen, timely spraying of plant cell membrane stabilizers and plant growth regulators such as sodium nitroprusside can promote the rapid growth of medium and small tillers and the rapid growth of latent shoots, and significantly increase the number of spikes and 1000-grain weight of wheat. , Significantly increase wheat yield.
Breathing System
For the treatment of diseases of the respiratory system:
Diseases and conditions of the respiratory system fall into two categories: Viruses such as influenza, bacterial pneumonia and the new enterovirus respiratory virus that has been diagnosed in children; and chronic diseases, such as asthma and chronic obstructive pulmonary disease (COPD). According to Dr. Neal Chaisson, who practices pulmonary medicine at the Cleveland Clinic, there is not much that can be done for viral infections but to let them run their course. "Antibiotics are not effective in treating viruses and the best thing to do is just rest," he said.
COPD is the intersection of three related conditions - chronic bronchitis, chronic asthma and emphysema, Chaisson told Live Science. It is a progressive disease that makes it increasingly difficult for sufferers to breath.
Asthma is a chronic inflammation of the lung airways that causes coughing, wheezing, chest tightness or shortness of breath, according to Tonya Winders, president of the Allergy & Asthma Network. These signs and symptoms may be worse when a person is exposed to their triggers, which can include air pollution, tobacco smoke, factory fumes, cleaning solvents, infections, pollens, foods, cold air, exercise, chemicals and medications.
Lung cancer is often associated with smoking, but the disease can affect non-smokers as well. Every year, about 16,000 to 24,000 Americans die of lung cancer, even though they have never smoked, according to the American Cancer Society. Like all cancers, lung cancer is caused by the uncontrolled growth of abnormal cells.
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