75results about How to "Strong chelation" patented technology

The invention relates to a special strawberry composite biological fertilizer as well as a preparation method and application thereof. The special strawberry composite biological fertilizer comprisesthe following components: EDTA-Ca (Ethylene Diamine Tetraacetic Acid), magnesium sulfate heptahydrate, EDTA-Mg, heptahydrate, EDTA-Zn, manganese sulfate monohydrate, EDTA-Mn, boric acid, EDTA-Fe, EDTA-Cu, soybean molasses, polyglutamic acid fermentation broth, chitosan oligosaccharide, algin, compound amino acid, humic acid, bacillus thuringiensis fermentation broth, bacillus megatherium fermentation broth, bacillus mucilaginosus fermentation broth and streptomyces jingyangensis fermentation broth. Through bacterium activation, seed liquid preparation, fermentation culture and compounding, thecomposite biological fertilizer is prepared, the composite biological fertilizer is applied to strawberry planting, and a diluted composite biological fertilizer liquid is sprayed at different growthstages of strawberry respectively. Due to synergetic effects of substances such as inorganic salts, organic matters and microorganisms, long lasting nutrient substances are provided to strawberry crops, absorption of nutrients in soil by plants is promoted, the fertilizer amount is reduced, and the chemical fertilizer cost is reduced.

The invention relates to a fertilizer synergistic agent. The fertilizer synergistic agent consists of a calcium silicon fertilizer, mixed raw ore powder and an activating agent. When in use, the fertilizer synergistic agent is mixed with a nitrogen, phosphorus and potassium composite fertilizer to form a base fertilizer or an additional fertilizer so as to comprehensively provide needed nutrients for the growth and development of crops. The fertilizer synergistic agent can improve the functions of physiological activity, nutrition and metabolism of plants, promote the formation of growth hormone and adjust the activity of enzyme. The product has strong capability of adsorption, chelation and ion exchange, can enrich nutritive elements of soil and the fertilizer and is slowly released according to the requirement of the needed fertilizer of the crop, thereby improving utilization rate and effective utilization period of the fertilizer, improving bioavailability of the fertilizer, reducing use amount of the fertilizer and the times of fertilization, promoting development and activity of a root system, strengthening photosynthetic capacity and immunity of the plant, improving the capability of adverse resistance, improving comprehensive quality of the product, increasing yield, purifying soil environment and improving ecological condition.

The invention discloses a preparation method of an amino acid water-soluble fertilizer containing polyaspartic acid. The method solves the problem of poor prevention and treatment effect of current foliar fertilizer. The method comprises the following steps: 1) collecting and storing the nim leaves, adding a decomposition agent for fully fermenting and treating; 2) adding water in fermented nim leaves, stirring for 1-2 hours and leaching and then centrifuging, collecting a filtrate; 3) adding strong acid in the filtrate and hydrolyzing for 15-22 hours under the temperature of 40-80 DEG C to obtain an amino acid mother liquor; 4) adding trace elements and a conditioning agent in the amino acid mother liquor in a reaction vessel for fully chelating; and 5) detecting and packing to obtain the product. The amino acid water-soluble fertilizer containing polyaspartic acid has a plurality of biological activities such as insecticide and sterilization; has no harm to higher animal, is safe to natural enemy of insects, and has the advantage of no residues on plant.

The invention provides an agricultural and forest water retaining agent with efficient water retention performance and a preparation method. The water retaining agent is prepared from components in percentage by weight as follows: 15%-35% of modified starch, 30%-50% of acrylic acid, 5%-17% of polyvinyl acetate, 15%-40% of sodium hydroxide, 3%-9% of a sodium lauryl sulfate solution, 0.1%-0.35% of ammonium persulfate, 0.1%-0.8% of sodium thiosulfate and 0.2%-0.65% of ethylene glycol. The prepared water retaining agent has good salt tolerance and pressure resistance, the use period is three years or longer, furthermore, the water retaining agent contains multiple elements such as C, O, H, N, K and the like which are quite beneficial to plant growth and soil and water conservation as well as chemical bonds and groups consisting of the elements, has good mixing performance with farmyard manure, chemical fertilizer, soil, fine sand and the like and has good water absorption performance, water retention performance and water releasing performance, a product is non-toxic and harmless to humans, animals and plants, and a special function group in a network molecule structure of the product has strong complexing and chelating effects on toxic metal ions such as pb, cd, hg and the like, so that a water source of a soil environment is purified.

The invention belongs to the technical field of biology, and discloses a method for enhancing extraction of heavy metal in a farmland by sugarcane through root system secretion. The method includes the following steps of firstly, planting a proper species of sugarcane in the farmland with the heavy metal (cadmium) exceeding the standard; secondly, dissolving oxyl hydroximic acid in water to form asolution with the concentration of 0.01-0.1 mM, and applying the solution in the elongation period of the sugarcane according to the spraying amount of 10-15 t / mu; thirdly, conducting spraying for 7-15 days, measuring soil, and complementarily spraying a sodium oxyl hydroximic acid salt water solution 1-2 times if the activity of cadmium in the soil is low; fourthly, harvesting the sugarcane andremoving the sugarcane plant out of the farmland. By adding the oxyl hydroximic acid, the oxyl hydroximic acid has a quite high chelating effect on the heavy metal under the alkaline environment, andthe migration of the heavy metal in the soil and a plant body is promoted; the oxyl hydroximic acid is the secretion generated by microorganisms, and ferrite with the quite high complexing capacity onthe heavy metal causes no toxic harm to the environment, is quite easy to degrade and has quite high practicability in farmland environment, agricultural production and the like.