Method for regulating drought resistance of festuca arundinacea by sludge/rare-earth mixed seed soaking solution

Abstract

The invention discloses a method for regulating the maximum proline content by a sludge / rare-earth mixed seed soaking solution under the seed soaking concentration of a 300 cerium+sludge leaching solution. The sludge / rare-earth mixed seed soaking solution is composed of a sludge leaching solution and a rare-earth solution in a weight ratio of 1:1, wherein the sludge leaching solution is prepared by mixing sludge and distilled water in a weight ratio of 1:2, standing for 24 hours and filtering; and the rare-earth solution is a water solution containing 200-400 mg.L<-1> Ce(NO3)3.6H2O or La(NO3)3.6H2O. The experimental result indicates that as the drought stress intensity increases, the proline content in both the control plant and the treated plant respectively increases, and the proline content reaches the maximum value under the seed soaking concentration of the 300 cerium+sludge leaching solution. The invention provides a certain technical support for drought-resistant growth and maintenance management of lawn plants in arid areas.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to urban afforestation, in particular to a method for controlling the drought resistance of tall fescue by adopting sludge rare earth mixed seed soaking liquid. Background technique [0002] Rare earths are known as "nutrients" and "growth regulators", which can promote plant growth and development, increase crop yields, increase the activities of crop amylase, protease, lipase, peroxidase, nitrate reductase and esterase, and soil enzymes. activity and promote metabolism, indicating that rare earth is a new type of plant growth regulator. Studies have shown that an appropriate amount of rare earth elements can promote plant growth, improve seed vigor, and promote seed germination. Appropriate concentration of rare earth elements (La, Ce, Nd, Sm, etc.) and their complexes (Ln-Gly, Ln-Gly-VB6) can enhance the stress resistance of plants and reduce the damage of advers...

AI Technical Summary

Problems solved by technology

[0007] At present, there are many problems in the production of turf plants in my country, which cannot meet the needs of urban turf planting, and the germination rate of turf plants and survival under adverse conditions are important limiting factors

Adding sludge extract and rare earth elements to soak seeds in the process of lawn production is mainly to use sludge extract and rare earth elements to enhance plant seed vitality, promote plant growth, and enhance plant stress resistance. Extraction and rare earth elements are applied to turf plants to improve the vigor of turf plant seeds, accelerate the growth of turf plants, and improve the stress resistance of turf plants; and there is no literature report on the technical application of this aspect

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