Molybdenum plant nutrition and lack of the main symptoms of molybdenum
Legumes body molybdenum concentrate in the rhizobia , followed by the seeds. Soybean plant , its leaves above the stems and petioles of Kekai molybdenum bar , molybdenum is higher than the reproductive organs of vegetative organs , the highest seed molybdenum content . Molybdenum has a good effect on the process of nitrogen fixation and legume crop growth and development , molybdenum can promote the strength of photosynthesis, promote the role of nitrate
Molybdenum carbide has a high melting point and hardness, good thermal stability and mechanical stability, and excellent corrosion resistance and other characteristics. Molybdenum is a silvery white refractory metal, a melting point of 2615 ℃, density of 10.2 g / cm 3, the expansion coefficient is small, a special tube is almost the same coefficient of expansion of the glass. Molybdenum stable at room temperature is higher than 600 ℃, rapidly oxidized.
没有评论:
发表评论