6results about How to "Good prevention and control effect" patented technology

The invention provides a method for preventing and controlling nitrogen and phosphorus loss of sandy and dry cultivated land based on EICP root reinforcement and relates to the field of soil ecological protection and agricultural pollution prevention and control. According to the method, a three-dimensional prevention and control system is formed from the two dimensions of surface layer film covering protection and deep root system soil fixation through the synergistic effect of EICP film covering and local plant root system three-dimensional reinforcement, wind erosion and water erosion are effectively resisted, the soil nitrogen and phosphorus loss rate of the large-gradient sandy and dry cultivated land is remarkably reduced, and meanwhile the soil desertification process is slowed down; the EICP film covering layer has good water permeability and moisture retention, nitrogen and phosphorus loss can be prevented, rainfall infiltration and soil moisture conservation can be guaranteed, and the germination rate and the growth speed of crops are increased; according to the method, local crop root system reinforcement is selected, the original planting structure is not disturbed, the economic benefit of cultivated land yield per mu is guaranteed, a harmless means of combining microorganisms, geotechnical engineering and agricultural planting is adopted, external pollution sources are not introduced, original basic characteristics of soil are not damaged, and the requirement for ecological protection of the Yellow River basin is met.

The invention provides a rice planthopper prevention and control method based on nitrogen fertilizer application, and belongs to the technical field of agricultural planting. According to the method, nitrogenous fertilizer application and rice planthopper prevention and control are combined, and the synergistic interaction of high rice yield and pest control is achieved. The method specifically comprises the four key steps of base fertilizer application, tillering stage regulation and control, accurate nitrogen supply in the heading stage and fertilizer supplementation in the filling stage, nitrogen, phosphorus and potassium fertilizers are reasonably distributed in all the steps, a plant source repellent is compositely added when the heading fertilizer is applied, and meanwhile scientific water management and leaf surface spraying technologies are matched. Through staged precise regulation and control of the nitrogen fertilizer and multi-technology cooperation, the rice planthopper prevention and control effect can be larger than or equal to 70%, the chemical pesticide application amount is reduced by 40% or above, and the method is suitable for various rice planting modes and has remarkable economic benefits and ecological benefits.

The invention discloses a bacillus PY4 strain capable of efficiently antagonizing various phytopathogens and application of the bacillus PY4 strain, and belongs to the technical field of biological prevention and control of plant diseases. The strain has stable morphological characteristics, and is identified according to a 16S rRNA (ribosomal Ribonucleic Acid) sequence, and the strain is a Paenibacillus bacterium. An in-vitro confrontation test proves that the PY4 can effectively inhibit pathogenic fungi such as sclerotinia sclerotiorum, fusarium graminearum, pseudocauda sp, alternaria alternata and sclerotium rolfsii. Field application results show that the PY4 has a good prevention and treatment effect on sclerotinia rot of colza. The invention further provides a biocontrol agent based on the strain and an application method of the biocontrol agent. The biocontrol agent can be used for green prevention and control of soil-borne and leaf-borne fungal diseases of crops.

The application discloses application of a secondary metabolite of Penicillium roqueforti PR1 and an effective component thereof in prevention and treatment of plant bacterial diseases, and belongs to the technical field of bactericides. The secondary metabolite of Penicillium roqueforti PR1 (Z44-K1) prepared by the application and ethyl-alpha-D-glucoside (Z44-K11) and ethyl-beta-D-glucopyranoside (Z44-K12) contained in the secondary metabolite have good prevention and control effects on rice bacterial leaf blight bacteria. The indoor prevention effect of Z44-K1 reaches 44.29% at a concentration of 50 ng / mL; the indoor prevention effect of Z44-K11 on rice bacterial leaf blight reaches 60.87% at 50 ng / mL; and the indoor prevention effect of Z44-K12 reaches 59.88% at 10 ng / mL. As plant immune inducers, the secondary metabolite and the effective component thereof are extremely low in dosage, safe, green and efficient, and provide a new idea for prevention and treatment of plant bacterial diseases.

The present application relates to a kind of organic acid powder compositions for improving pig house environment.It is formed by the uniform mixing of the following weight ratio of raw materials: carrier particles 70~80 parts, organic acid powder 8~15 parts, spore beneficial bacteria combination powder 3~7 parts.The present application has very good effect of reducing humidity in pig house, and also has good microbial inhibition isolation and prevention and control effect;Using the product and method of the present application for pig house environment improvement, humidity control effect and microbial prevention and control effect can be obtained.

The lens for inhibiting axial elongation based on 3D disordered microstructure partition regulation point diffusion belongs to the technical field of eye optics and myopia prevention and control, and comprises a lens base and a disordered dynamic microstructure layer arranged on the lens base; the inner surface of the lens base is processed with a point diffusion function, the disordered dynamic microstructure layer comprises a plurality of microstructure units arranged in a non-periodic manner in space, and the microstructure units modulate and scatter incident light to regulate the point diffusion function of the imaging of the inner surface of the lens; the optical properties of the microstructure units can dynamically change in response to external stimulation, so that the form of the point diffusion function of the inner surface of the lens dynamically adjusts to provide a dynamic stimulation signal for inhibiting axial elongation to the retina. By introducing the disordered dynamic microstructure, the point spread function (PSF) of the incident light is intelligently regulated, a dynamic, non-periodic and optimized light signal distribution is formed at the periphery of the retina, and the axial elongation is more effectively inhibited.