35results about How to "Guaranteed retention rate" patented technology

The invention discloses a compound bacterial agent and its preparation method and application, belongs to the technical field of animal husbandry, relates to silage, and solves the problems of serious dry matter loss and low fermentation quality in corn cob silage. A composite microbial agent, which is composed of Lactobacillus rhamnosus and Pediococcus ethanol-resistant at a volume ratio of 1:1-1.5, Lactobacillus rhamnosus ZXY7, preservation number: CGMCC NO.11849, preservation date: 2015 On December 9, Pediococcus ethanolidurans NO.1, preservation number: CGMCC NO.11850, preservation date: December 9, 2015. The invention can significantly reduce the production of alcohols or volatile substances, has a high dry matter preservation rate, and can be widely used in other silages with high sugar content.

The invention provides a preparation method of a gradient cross-linked zwitterion-modified multilayer composite nanofiltration membrane. The preparation method includes obtaining a hydrolyzed polyacrylonitrile ultrafiltration membrane with a polyacrylonitrile ultrafiltration membrane, and placing the ultrafiltration membrane in an ultrafiltration cup. The membrane is soaked with a mixed solution of glutaraldehyde and sodium lauryl sulfate, and an amphoteric polyethyleneimine solution in turn, and then the membrane is stirred and coated with the prepared tannic acid solution, and then the membrane is compressed by pressure filtration to obtain a gradient Cross-linked zwitterion-modified multilayer composite nanofiltration membranes. The present invention also provides the application of using the obtained composite nanofiltration membrane as a salt and dye separation membrane. The preparation method of the invention is simple and convenient, the membrane surface has a hydrophilic, loose and cross-linked separation layer, and the prepared membrane material is used for the separation of salt and dye, and has better water flux, dye retention rate and salt transmittance.

The invention provides a device and a method for controlling follicle development of equine animals and preventing and treating reproductive tract inflammation. The device is composed of a nylon bracket and a slow-release device. The slow-release device is fixedly installed on the nylon bracket. The nylon bracket includes: a connecting part and two long arms, and the two long arms are connected to the connecting part respectively, and the two long arms are connected to the connecting part respectively. A certain angle is formed between two long arms, and the long arm is composed of a cylinder and a top sphere, the top of the cylinder is provided with a top sphere, and the bottom of the cylinder is connected with the connecting part, and the slow release device includes two circles Each cylinder is provided with a number of small holes and disc structures arranged in an orderly manner. The small holes are set between the two disc structures. The top of the cylinder is a hollow round cap. The cylinder is covered with a long On the arm, the hollow round cap matches the top sphere, so that the cylinder is fixed on the long arm, and the disc structure is perpendicular to the extension direction of the long arm.

The invention discloses a method for culturing large eucalyptus seedlings. The method comprises the following technical steps: 1. selection of seedling field; 2. preparation of a plug seedling bed; 3. preparation and sterilization of matrix soil; 4. selection and treatment of ear rods and tissue culture seedlings; 5. cutting and plug transplantation of the tissue culture seedlings, wherein, the cutting seedlings are vertically inserted in the midpoint of holes at depth of 1.5-2cm; and the tissue culture seedlings are directly transplanted to the prepared plug seedling bed; 6. water and fertilizer management; 7. transplantation in vessels: the seedlings are cultured in the plugs for about 50-70 days, and terminal buds are newly extracted to 2-3cm; when the root systems of most of nursery stocks are lumped, the seedlings in the plugs are transplanted to a black polyethylene plastic nursery cup with 8*8 (cm) for culturing the large seedlings; and 8. culture of the large seedlings: the transplanted young seedlings are placed in a shading arched cover for culture, and a shading net is gradually opened for hardening the seedlings at the later period; water and fertilizer management is strengthened; and then the seedlings are removed out of a seedling nursery and planted in a mountain for afforestation in the case of seedling height up to 35-50cm and ground stems up to more than 0.25cm, fertilization is stopped 10 days before afforestation, and the nursery stocks are applied with transferring fertilizer by 0.3% of complex fertilizer once 1-2 days before outplanting.

The invention relates to an ecological repairing method of sandy coast coastal protection forest, in particular to a repairing method of ecotome sandy coast coastal protection forest afforestation. Specially, embankment afforestation is carried out by clay loam near the costal road of a protection forest ecotome sandy coast or sand tidal flat facing the sea so as to improve the physical and chemical properties of sandy soil, inhibit salt, retain water, preserve fertilizer and perform the action of protection. The invention uses a clay loam embankment method to raise jejune, fertilize-leaking and water-leaking sandy soil on the sandy coast line as well as sandy coast at two wings of ocean roads into embankment-type forest land; the clay loam physical property and moisture content conditionof an embankment wood pad layer can satisfy the fertility requirements of water, fertilizer, gas and heat for plant growth; and compared with other soil textures, the forest land has higher field water-holding capacity as well as moisture and fertilizer retention capability, and effectively holds the physiological activity of various organic matters and active enzymes in soil so as to ensure qualified afforestation survival rate and conservation rate.