Application of eutrophic water to resistance regulation of lawn plants

Abstract

The invention discloses an application of eutrophic water to resistance regulation of lawn plants, wherein the eutrophic water is the eutrophic water with 25 percent-75 percent of the original concentration; the eutrophic water has TN of 9.7mg / L-13.1mg / L, TP of 0.6mg / L-0.9mg / L and pH value of 8.12-8.99; and the evaluation indicator of the resistance refers to the change in contents of proline, soluble sugar and malonaldehyde. Results show that the diluted eutrophic water is applied to irrigation to improve the resistance of the lawn plants to adverse growing environment and achieve the purpose of resource conservation and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a method for rationally using urban eutrophic water bodies. More specifically, it is the application of eutrophic water bodies in regulating the stress resistance of turf plants. Background technique [0002] Eutrophication refers to a pollution phenomenon that is harmful due to the increase of nutrients in eutrophic water due to human activities, which causes excessive growth of plants and changes in the ecological balance of the entire eutrophic water. With the continuous development of cities and industries, as well as the extensive use of agricultural chemical fertilizers and phosphorus-containing detergents, a large amount of untreated urban domestic sewage and industrial and agricultural sewage flow into lakes and rivers, making the nitrogen, phosphorus and other nutrients in lakes and rivers Continuous accumulation increases the productivity of eutrophic wat...

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Problems solved by technology

It is worth noting that although the concentration of heavy metals in the sewage treated by the treatment plant is controlled below the safe range, long-term irrigation will cause the accumulation of heavy metals in the soil (Adhikar et al., 2004), or the lack of trace elements in plants (Mujeriego et al., 1996) Therefore, it is necessary to do regular monitoring when using this method

[0004] Since most of the water sources for sewage irrigation need to be re-treated by sewage treatment plants, considering the factors in the treatment process, the cost of irrigating lawns with reclaimed water is still high, and it will also cause some disadvantages to the environment and the plants themselves. Although this method greatly alleviates the need for fresh water However, it is not difficult to find out by consulting the literature that the sewage irrigation technology in my country is more applied to garden irrigation and less to green land irrigation (Wang Changjun et al., 2005).

In particular, the direct use of eutrophication water as the water source for irrigating lawn plants, the exploration of the optimal eutrophication water and the optimum concentration as the water source for lawn green space irrigation, and the use of eutrophication water to regulate the soluble sugar, proline, The research on the application of malondialdehyde content has not yet been reported in relevant documents

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