204results about How to "Improve nitrogen fixation" patented technology

Methods and systems are provided for generating and utilizing a bacterial composition that comprises at least one genetically engineered bacterial strain that fixes atmospheric nitrogen in an agricultural system that has been fertilized with more than 20 lbs of Nitrogen per acre.

The invention discloses a tealeaf residue containing peanut fertilizer additive capable of improving a soil environment. The peanut fertilizer additive is prepared from the following raw materials in parts by weight: 20-25 parts of dead leaves, 5-8 parts of diatomite, 1-2 parts of dicyandiamide, 1-4 parts of soluble chitosan, 5-7 parts of oligosaccharide, 1-2 parts of dried yeast, 2-3 parts of a tealeaf residue, 1-3 parts of polypropylene glycol, 3-5 parts of chlormequat chloride, 1-1.5 parts of kongpo monkshood root, 2-4 parts of paulownia leaves, 1-2 parts of wormwood, 0.4-0.5 part of fatty acid, 2-3 parts of mannitol and 2-5 parts of ammonium molybdate. The tealeaf residue contains theophylline having a soil destruction function, but after the tealeaf residue is compounded with dried yeast and traditional Chinese medicine residues for fermentation, an outstanding soil improvement effect is achieved; when the peanut fertilizer additive provided by the invention, namely a plant fertilizer additive, is cooperatively used with a fertilizer, the nutrition is comprehensive, the absorption effect is good, the efficiency is high, and the fertilizer can be slowly released, so that the fertilizer effect period is long, and the plant growth is vigorous; diatomite can be used for solving the problem of high soil hardening possibility, preventing nutrient loss and achieving a good water retention effect.

The invention relates to a Weibei dryland apple-sainfoin three-dimensional allocation standardized production technology. The Weibei dryland apple-sainfoin three-dimensional allocation standardized production technology includes the following steps: (1) determining the sowing time and the sowing amount, wherein sowing is carried out after early spring after apple trees sprout, or sowing is carried out after the rainy season in summer or autumn, and 3.0-4.0kg of seeds are sowed per mu; (2) determining the sowing mode, wherein an inter-line sainfoin planting mode is adopted for an apple grove with the planting density (the row spacing*the line spacing) of 2m*4m; (3) determining the clipping time, wherein clipping is not carried out in the first year after sowing, clipping is started to be carried out from the second year, the first-time clipping is preferably carried out before an early flowering season, clipping is carried out every 40-50 days afterwards, clipping is carried out three times in a whole year, the third year, the fifth year and the sixth year are the same as the second year in clipping time number, and clipping is carried out one time in the fourth year; (4) conducting field management. According to the Weibei dryland apple-sainfoin three-dimensional allocation standardized production technology, the grove soil nutrient is improved, the pest and disease damage is reduced, the yield and the quality of fruits are improved, the ecological environment is further adjusted, the carbon sequestration and oxygen production ecological value is increased, and the win-win effect on economic benefits and ecological benefits is achieved.

The invention provides a bipolar membrane with a copper-metal organic framework material as an intermediate interface layer and a preparation method of the bipolar membrane. The bipolar membrane is composed of a cation exchange membrane layer, an anion exchange membrane layer and the intermediate interface layer. According to the preparation method, layer-by-layer tape casting is adopted; a cationexchange membrane solution is prepared on a clean glass plate in a tape casting manner, and a cation exchange membrane is obtained after air-drying at room temperature; then, an intermediate interface layer membrane solution is prepared on the surface of the cation exchange membrane in a tape casting manner by adopting a chemical crosslinking or physical absorption method, and the intermediate interface layer is obtained after drying treatment; and finally, an anion exchange membrane solution is prepared on the surface of the intermediate interface layer in a tape casting manner, an anion exchange membrane is formed, and the bipolar membrane is obtained after drying. The prepared bipolar membrane has dual excellent electrocatalytic and photocatalytic properties; the hydrolytic dissociation voltage is low; the working current density is high; the performance is stable; the service life is long; continuous H<+> supplied from hydrolytic dissociation on the intermediate interface layer ofthe bipolar membrane is provided for the reduction from nitrogen gas to ammonia as a raw material; and then the sustainable operation of the reduction from nitrogen gas to ammonia is facilitated.

The invention provides a biological bacterial fertilizer special for peanut planting and a preparation method of the biological bacterial fertilizer. The biological bacterial fertilizer is characterized by comprising, by weight, 20-30 parts of biological carbon, 70-80 parts of cake fertilizer, 5-10 parts of humic acid, 8-15 parts of perlite, 40-50 parts of dry cow dung, 3-5 parts of shell powder,10-15 parts of purslane, 15-25 parts of whole alfalfa plants, 20-30 parts of urea, 15-25 parts of calcium superphosphate and 4-8 parts of biological agent. An organic fertilizer serves as the main fertilizer, and a small quantity of chemical fertilizer and biological fungicide are added, so that damage of the chemical fertilizer to soil is reduced. The biological fungicide is used for killing bacteria in the soil, and the activity of beneficial bacteria is improved, so that the purposes of preventing and treating diseases of peanuts are achieved, and the planting yield of the peanuts is improved.