The urea ammonium nitrate solution is prepared from urea, ammonium nitrate and water. It combines three kinds of nitrogen sources and can exert various nitrogen source advantages. Production practice also proves that the effect of applying urea ammonium nitrate solution on planting potatoes is significantly better than that of single application of urea.
To replace urea with urea ammonium nitrate solution, the fertilization structure should be adjusted first, and the base fertilizer should be applied as deep as possible to maintain the fertilizer effect for a long time. Generally, potato cultivation requires about 20 kg of urea, and the cost is about 30 yuan. After years of experiments and demonstrations, if the application of urea ammonium nitrate solution only needs about 5 kg, it can meet the growth demand of potatoes, and the cost is about 25 yuan, so the planting cost is increased. In the application of liquid fertilizer, we must pay attention to a small number of times. In the early stage of potato growth, we should increase the nitrogen fertilizer. After the bud, we should reduce the amount of nitrogen fertilizer, increase the supply of potassium fertilizer, boron fertilizer and zinc fertilizer, and achieve nutrient balance to avoid the spur of the upper part of the flower. The lower part of the "sweet potato".
Pepper management needs attention in July
Appropriate topdressing: In early July, it was the time of pepper coloring. Just after the rain was completed within 10 days, foliar spray fertilizer could be applied. When spraying, a new high-fat film was added to effectively improve the efficiency of fertilizer efficiency. Stop the application of nitrogen fertilizer to prevent the latter season from growing. At the same time, the base fertilizer should be applied as early as September-October, which is conducive to improving the nutrient level of the tree.
Field management: timely cultivating and weeding to promote the strong growth of the tree, pay attention to timely discharge of stagnant water after the rain, and guard against root rot.
Plastic pruning: summer pruning is generally carried out 2 to 3 times a year, mainly removing dense branches, overlapping branches, pests and branches, etc., in order to improve the ventilation and light transmission conditions of the pepper tree, improve photosynthesis, make nutrients easy to accumulate, and promote the formation of the next year. More knots of pepper. The pruning mouth should be applied in time to apply the anti-corrosion film to protect the wound from healing and isolate the pathogen.
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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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