40results about How to "Prevent blight" patented technology

The invention provides a fresh-keeping method capable of prolonging storage time of piliferous Chinese yams. The fresh-keeping method comprises the following steps of S10, selecting a storehouse; S11, disinfecting the selected storehouse; S12, selecting Chinese yams; S13, treating the selected Chinese yams; S14, soaking the treated Chinese yams; S15, performing airing treatment; S16, performing fresh-keeping treatment; S17, performing airing treatment; and S18, performing storage treatment. According to the fresh-keeping method capable of prolonging the storage time of the piliferous Chinese yams, provided by the invention, a fresh-keeping agent special for the piliferous Chinese yams used in the fresh-keeping method disclosed by the invention is high in safety properties and harmless to human bodies; and besides, the fresh-keeping method using the fresh-keeping agent is simple, the fresh-keeping effects are good, and the fresh-keeping time of the piliferous Chinese yams within the storage time can be well prolonged.

The invention provides a method for producing grain-oriented silicon steel with single cold rolling, comprising: 1) smelting, refining and continuous casting to obtain a casting blank; 2) hot rolling; 3) normalization, i.e. normalizing annealing and cooling; 4) cold-rolling, i.e. single cold rolling at a cold rolling reduction rate of 75-92%; 5) decarburizing annealing at 780-880° C. for 80-350 s in a protective atmosphere having a due point of 40-80° C., wherein the total oxygen [O] in the surface of the decarburized sheet: 171 / t≦[O]≦313 / t (t represents the actual thickness of the steel sheet in mm), the amount of absorbed nitrogen: 2-10 ppm; 6) high temperature annealing, wherein the dew point of the protective atmosphere: 0-50° C., the temperature holding time at the first stage: 6-30 h, the amount of absorbed nitrogen during high-temperature annealing: 10-40 ppm; 7) hot-leveling annealing. The invention may control the primary recrystallization microstructure of steel sheet effectively by controlling the normalization process of hot rolled sheet to form sufficient favorable (Al, Si)N inclusions from nitrogen absorbed by slab during decarburizing annealing and low-temperature holding of high-temperature annealing, facilitating the generation of stable, perfect secondary recrystallization microstructure of the final products. In addition, the invention avoids the impact of nitridation using ammonia on the underlying layer in prior art, and thus the formation of a good glass film underlying layer is favored.

The invention relates to a fertilizer for rice dry seedling and a preparation method thereof. The preparation method comprises the following steps: mixing ammonium sulfate, ferrous sulfate, phosphogypsum, potassium chloride and monoammonium phosphate, blending uniformly, pulverizing to obtain materials with a granularity less than 1 mm; granulating the materials with vapor in a drum granulator toachieve the granulation rate up to 70 to 90%; oven-drying the granulated materials into a drier with the furnace temperature of 500 to 550 DEG C, the head kiln temperature of 500 to 550 DEG C and thetail kiln temperature of 80 to 90 DEG C; cooling the dried materials in a cooler to reduce the temperature of the materials below 50 DEG C; sieving the cooled materials in a drum grading sieve to obtain materials with the granularity of 1 to 4.75 mm; and packaging in bags. The fertilizer contains nitrogen, phosphorus, potassium and trace elements, not only can prevent the occurrence of diseases such as large-area yellowing and death of seedlings, yellow mosaic, sheath blight and bakanae but also can promote the growth of the rice root system, improve the utilization rate of the fertilizer andensure the yield and the income increase of high-quality rice. The preparation method has the advantages of simple process, convenient operation, reduced cost, labor saving and remarkable effect.