Under natural condition, after having the flood or the rainstorm, certain low-lying soil and bog region of imperfectly drained or high subsoil water level, because of the excessive water contents are often leading to harm to the plant, and affecting the normal growth of plants, and becoming the restrictive factor. So it is very significant to enhance plant's patience and the resistance under flooding stress to the agricultural production. As a major element necessary for plant growth and a second mes...