2results about How to "Improve flocculation ability" patented technology

This invention provides the application of polyferric sulfate in improving plant salt stress resistance and / or improving saline-alkali land, belonging to the field of agricultural technology. The polyferric sulfate application provided by this invention can effectively improve the germination ability of plant seeds under salt stress, effectively enhance the activity of plant antioxidant systems and photosynthetic efficiency, thereby effectively improving the survival rate and growth performance of plants under salt stress. Simultaneously, polyferric sulfate can effectively reduce the EC value of saline-alkali soil, thereby effectively improving the germination rate of plant seeds in saline-alkali land and effectively improving saline-alkali land. This invention is simple to operate, low in cost, and environmentally friendly, suitable for enhancing the salt and alkali tolerance of plants, and has broad application prospects.

The invention discloses an ecological flocculant based on cassava starch as well as a preparation method and application thereof, and belongs to the technical field of dredged soil treatment. The preparation method comprises the following steps: dispersing cassava starch in water, stirring until the cassava starch is completely dissolved, adding a sodium hydroxide solution under the conditions of water bath heating and stirring, and carrying out alkalization reaction to obtain a first mixed solution; dropwise adding a 3-chloro-2-hydroxypropyl trimethyl ammonium chloride solution into the first mixed solution, and continuously performing an etherification reaction under the conditions of water bath heating and stirring to obtain a second mixed solution; after the reaction is finished, standing and cooling the second mixed solution to room temperature, and adjusting the pH to be neutral to obtain a flocculant mother solution; precipitating the flocculant mother liquor, washing, filtering, drying to constant weight, and grinding into powder to obtain the cassava starch-based ecological flocculant. The cassava starch-based ecological flocculant used in the invention is rich in cationic groups, has good solubility, is easy to fully disperse in dredged soil slurry, and has excellent dredged soil flocculation capability.