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During the experiment, two different varieties of big-leafed water spinach and small-leaved water spinach were selected for the experiment. 250 large and small lobular spinach seeds with the same size and full size were selected and placed in an artificial climate incubator for germination. The length of the shoots was about 3 cm. Transfer to Hogard's nutrient solution and continue to culture in an artificial climate incubator. The method of operation is as follows: Spikes are used to implant buds on perforated extruded plates and placed in transfer containers containing Hoggan's nutrient solution every 3 days. Change the culture solution once. The parameters of the artificial climate incubator are: temperature 28°C, relative humidity 70%, light condition L:D=12h:12h, light intensity 10000lx. When the water spinach grows to 8~11cm, choose good growth, strain Highly similar seedlings were placed in a solution containing 0.02 mmol/L calcium sulfate solution as the supporting electrolyte and starved for 24 h for nutrient adsorption kinetics experiments.
Through the cultivation of artificial climate incubators, it has been found that root-assisted segregants play an important role in plant absorption of mineral nutrients. Therefore, plant roots play an important role in the absorption of pollutants, and the size of roots and the rate of absorption of nutrients by plants Affinity has a direct impact. In this study, there was no significant difference in biomass and root mass of the two species of water spinach, but the root mass ratio of the leaf spinach was significantly greater than that of the big leaf spinach, suggesting that the leaf spinach may have a greater relative The more developed root system, this is one of the important reasons for the maximum absorption rate and affinity of ammonium nitrogen and nitrate nitrogen in the leaves of the water spinach.
With the continuous development of the aquaculture industry, people enjoy more and more abundant livestock and poultry products, but many aquaculture production processes will bring a lot of pollution to the surrounding water bodies, resulting in eutrophication of water bodies. In recent years, aquatic plants have been used as studies. The main body, through its absorption of pollutants during the growth process to reduce or remove the water body nutrients research. Water hyacinth, water peanuts, duckweed and other plants have a certain degree of removal of harmful substances such as nutrients or heavy metals in the water body However, water hyacinth and other aquatic plants lack the value of subsequent development and utilization. If they cannot be removed in time after use, their residual water in the water may cause secondary pollution. Therefore, in the process of handling the eutrophication wastewater of aquaculture, select Plants that can both remove water pollution and directly generate economic value have become a problem that needs to be solved in this field. The spinach is a fast growing and easy to cultivate and manage, and it can be harvested many times during its growth period, creating a certain amount of Economic value, so the use of water spinach to deal with water pollution will reduce the risk of secondary pollution, which makes the water spinach is widely used in recent years Used for the removal of water eutrophication. Artificial climate incubators for the study of the absorption of nitrogen by water spinach are very scientific.