Studies On Bio-ecology Of Landscape Cover Green Plant Orychophragmus Violaceus

Orychophragmus violaceus is also known as Zhuge vegetables, rapeseed flowers, which is belongs to the cruciferous plants, for one year or biennial herb. The article mainly carried on the biology research of landscape cover green plant Orychophragmus violaceus. This paper has arrived at the biological characteristics by through studying on bio-temperature, morphology observation and biomass determined, and summed up the ecological features by means of Orychophragmus violaceu' population dynamics, summarized the ecology benefits getting through oxygen demand exhausting and carbon dioxide absorbing with methods of experimental study. Observations by the positioning of one year, using laboratory analysis of their biological characteristics, ecological features and ecological benefits were investigated, the results show that:1. The Orychophragmus violence's sprout in the middle of Aug., the upper parts wither away in November and return green in March of the next year. The flower period is from the end of April to the middle of June and wither away period is from the end of June to the end of July. But not all plant can return green.2. The number of population is less 48% than last year. Mainly as the vegetative growth is short in the last year, the storage nutrition of root was not assure the plant live through the winter safely lead the plant is not return green in the ensuing year.3. The biomass of leaf is the most, the caulis is the second, the flower is the third and the root is minimal. The biomass specific weight of leaf is very high in the divide type, it can attain 63.66%, but the biomass specific weight of apparatus is higher in the straighten type.4. The number of Orychophragmus violence's oxygen released and carbon dioxide absorbed is higher than those of other herbaceous plants, the largest carbon dioxide absorbed reached to 21.859g·m-2, the highest oxygen released up to 15.898g·m-2, as result it has have purification capacity on the surrounding environment.5. the number of Orychophragmus violence's rising released water caloric receptivity was much higher compared with common cover plant in the other schools, the maximum transpiration reached to 151.452mol·m-2s-1, the number of its'daily water released arrived to 2726.136g-m'2, the number of its' daily caloric receptivity attained to 6650.323kj·m-2 This showed that Orychophragmus violaceus is the good green plant by reason of comparing to plant in term of the number of assimilation, carbon dioxide sequestration and oxygen release, transpiration of water and heat absorption are higher.