Warm season type water-saving agent for drought resistance of lawn grasses and preparation method thereof

Abstract

The invention relates to a water-saving agent for drought resistance of plants, particularly relates to a warm season type water-saving agent for drought resistance of lawn grasses and a preparation method thereof. The warm season type water-saving agent can increase biomass, enhance drought resistant and plant disease-preventing capacity, and effectively prolong the drought resistance time. The warm season type water-saving agent comprises the following raw materials in percentage by weight: 0.02-0.05 of chitosan, 0.004-0.01 of salicylic acid, 0.00067-0.004 of forchlorfenuron, less than 0.03of phosphoric acid, less than 0.002 of cosolvent, and less than 0.05 of organic solvent and water in balance. The preparation method comprises the following steps: adding chitosan into phosphoric acid, homogeneously mixing, adding ethanol, dissolving under stirring, adding salicylic acid and forchlorfenuron, stirring, adding cosolvent and water, dissolving under stirring, and adding water to obtain colorless transparent mixed solution, i.e. warm season type water-saving agent for drought resistance of lawn grasses.

Description

technical field [0001] The invention relates to a plant drought-resistant water-saving agent, in particular to a warm-season lawn grass drought-resistant water-saving agent and a preparation method thereof. Background technique [0002] In recent years, the area of ​​lawns in various regions of my country has expanded rapidly. Taking Beijing as an example, the area of ​​lawns has exceeded 5×10 7 m 2 , and it is still increasing ([1] Wang Zaisheng, Huang Ding, Yan Xuebing, etc. A preliminary study on water-saving technology for modern urban lawns [J]. Grassland and Lawn, 2005 (6): 8-12.). Urban turf has made great contributions to the development of urban environment, but there are many problems in the use and management of turf. [0003] Compared with other types of vegetation, turfgrass has poor drought resistance and high water consumption. According to reports, the lawn water consumption can reach 3 ~ 8mm d -1 , some even up to 12mm·d -1 ([2] Beard J B. Turfgrass wat...

AI Technical Summary

Problems solved by technology

But there are also deficiencies: First, most of them have a single function, which only inhibits transpiration from the metabolism to achieve the purpose of drought resistance, ignoring the nutritional balance

Secondly, the dwarfing agents used, such as paclobutrazol and diclobutrazol, remain in the soil for a long time and have a long half-life (0.5 to 1 year). Excessive application will inhibit crops; finally, the used chelating agents such as EDTA, etc. , extremely poor biodegradability after chelated metals, not recommended