Rainwater contains more oxygen and nitrogen compounds. Rainwater and snowflakes are formed by condensation of very small water vapor when it is cold. They float around in the air. Because of their loose structure and large area, they can absorb more oxygen and nitrides in the air.
Lightning during a thunderstorm, with a strong current and a high temperature of several thousand degrees, will ionize the inactive nitrogen molecules in the atmosphere, turning them into ions, and combine with oxidation to become nitrogen dioxide, which is then dissolved by rain to form dilute hydrochloric acid , As the rain falls, it combines with other substances in the soil to form nitrogen fertilizer that helps the growth of flowers. Rainwater contains less heavy water. Heavy water is a kind of radioactive substance that inhibits the life activities of animals and plants. The boiling point of heavy water is 101.42°C, and the boiling point of ordinary water is 100°C. Therefore, ordinary water evaporates quickly.
According to the determination of relevant departments, the content of heavy water in rainwater is only a quarter of that in well water. Rainwater contains less saline and alkali. Saline alkali cannot evaporate with water, and the content of saline alkali in rainwater is very small. Saline-alkali is the enemy of flowers. In parts of the north, the salt-alkali content in soil and well water is relatively high, and some are no longer suitable for watering flowers. Therefore, rainwater or melted snow water that is basically free of salt and alkali is more precious to flowers.
Leave a Reply