36results about How to "Increase the amount of substitution" patented technology

The invention discloses a biochemical fertilizer for organic crops and a production method thereof. The biochemical fertilizer for organic crops comprises the following components in parts by weight: 20-45 parts of carbon phosphorus potassium, 10-25 parts of organic fertilizer ferment, 25-35 parts of humic acid, 20-30 parts of polyaspartic amino acid, 15-25 parts of calcium magnesia phosphate fertilizer, 25-45 parts of dicyandiamide, 10-45 parts of ammonium molybdate heptahydrate, 10-35 parts of plant additive, 20-45 parts of soil conditioner, 10-15 parts of peptone, 20-35 parts of granular urea and 5-10 parts of rare earth additive. The biochemical fertilizer for organic crops solves problems of fertilizer selection, fertilizer matching, fertilizer application area, plant fertilizer application amount recalculation, control on fertilizer application amount and the like which are met by people, has the characteristics of simple technique, favorable use effect and the like, and is especially suitable for fertilizer application for organic crops. The biochemical fertilizer for organic crops is beneficial to upgrading soil organic matters, activating the original humus, enhancing the replacement amount of soil cations, enhancing the soil activity and improving the soil absorbability, and has obvious effect on shock-absorbing capacity.

The invention belongs to the field of a fertilizer, in particular to a potassium humate compound fertilizer and a preparation method thereof. The potassium humate compound fertilizer is prepared by mixing urea, potassium humate, monoammonium phosphate, ammonium chloride, calcium powder and bentonite with magnesium sulfate, zinc sulfate and medium / trace elements. The potassium humate compound fertilizer granulated by using a steam drum physical agglomeration method and the preparation method of the compound fertilizer have the advantages that the prepared potassium humate compound fertilizer has large particle size and high strength and does not agglomerate; the capabilities of water and fertility retention, heat preservation and ventilation of the soil are enhanced; the soil structure is improved; the soil fertility is increased; the problems of reduced soil fertility, environmental pollution, soil hardening, nutrition unbalance and stress resistance of crops are solved; the utilization rate of the fertilizer is improved; the defects of low fertilizer efficiency, insufficient nutrition utilization, overproof pesticide residue, severe nitrate accumulation and heavy metal pollution are overcome; the sustained-release effect against pesticide is realized; the agroecological environment is protected; and the efficiency, yield and crop quality are improved.

The invention discloses a YCe co-doped nanocrystalline rare earth permanent magnet and a preparation method thereof, which can simultaneously obtain high magnetic performance and high temperature stability under high YCe substitution amount. The main powder strips and the auxiliary powder strips of the magnet are prepared by quick quenching, the main powder and the auxiliary powder are prepared by crushing, the main powder and the auxiliary powder are mixed uniformly in a certain mass ratio, and the nanocrystalline rare earth permanent magnet is prepared by hot pressing and thermal deformation. The nano-sized grains in the present invention effectively solve the problem of abnormal grain growth in Ce-rich sintered magnets, YCe co-doping can improve the magnetic properties and temperature stability of Ce-rich magnets, and the auxiliary powder can optimize the microstructure of the magnets. The invention greatly reduces the cost of rare earth raw materials while improving the magnetic performance, and balances the utilization of rare earth resources.

The invention discloses a negative temperature and radiation-proof boron-containing barium-rich sulfoaluminate cement clinker. The cement clinker is composed of the following minerals in weight percentage: barium calcium sulfoaluminate 48-62%, dicalcium ferrite 5-12%, dicalcium silicate 20-26%, barium aluminate 8-15% and boric acid Calcium 3-8%. The cement clinker of the present invention has high strength, good durability, high compactness, low dry shrinkage rate, good radiation protection performance and excellent frost resistance performance, and is suitable for use in high and cold regions such as the two poles of the world and northern China, and in nuclear power projects. Freezing and thawing may damage the construction of structures, such as containment, shielded powerhouses, auxiliary powerhouses, etc.