6 results about "Calcium nitrate" patented technology

The invention discloses a romaine lettuce soilless culture nutrient liquid. The romaine lettuce soilless culture nutrient liquid consists of the following components in parts by mass: 250-350 parts of rice washing water, 2-5 parts of urea, 1-5 parts of calcium nitrate, 1-5 parts of potassium nitrate, 1-3 parts of monopotassium phosphate, 1-6 parts of potassium sulfate, 0.5-2 parts of magnesium sulfate, 0.1-0.5 part of chelated iron, 0.2-2 parts of borax, 1-5 parts of sodium molybdate, 2-8 parts of elecampane, 1-5 parts of poria cocos and 1-3 parts of alum. The rice washing water used by the romaine lettuce soilless culture nutrient liquid is rich in nitrogen, phosphor, potassium and various trace elements needed for the growth of romaine lettuce; the elecampane and the poria cocos can be added to promote the romaine lettuce to evenly and comprehensively absorb trace elements, and to promote the growth and the root system development of the romaine lettuce, so that the plant resistance is strengthened, the occurrence of physiological diseases is prevented; the nutrition of the romaine lettuce soilless culture nutrient liquid well exceeds nutrients which can be provided by the soil, and thus, the romaine lettuce soilless culture nutrient liquid is relatively beneficial to the growth of the romaine lettuce; and the grown romaine lettuce is completely filled, crisp and tasty in fruit, bright-colored in lettuce leaf and good in quality.

The invention discloses a garden seedling soilless planting culture fluid and its preparation method. The garden seedling soilless planting culture fluid is prepared from, by weight, 25-35 parts of methane fluid, 20-25 parts of plant straw, 11-18 parts of expanded perlite, 6-11 parts of ethylene diamine tetraacetic acid, 10-15 parts of earthworm soil, 8-15 parts of sodium silicate, 11-22 parts of rotted fig, 6-12 parts of liquorice, 8-11 parts of beta-cyclodextrin, 1-3 parts of mulberry juice, 3-5 parts of calcium nitrate, and 4-9 parts of rare earth element. The garden seedling soilless planting culture fluid is prepared by applying methane fluid, plant straw, expanded perlite, earthworm soil, and ethylene diamine tetraacetic acid as main raw materials, and adding composite vitamin, plant hormones and acidity regulator; the garden seedling soilless planting culture fluid is reasonable in formula and simple in preparation technique; the garden seedling soilless planting culture fluid is scientific in formula, safe and free from pollution; besides, the garden seedling soilless planting culture fluid has the advantages of providing various nutrition elements for flower growth, effectively solving the common nutrition loss during the growth process of distilled water hydroponics flower, and improving the quality of the distilled water hydroponics flower.

The invention discloses a method for preparing a halogen-free low-temperature fire-retardant fiber, and relates to a method for preparing a self-assembled low-temperature fire-retardant fiber at a room temperature. The invention aims at solving the technical problem that the fire-retardant temperature of the current fire retardant is relatively high. The method comprises the following steps: 1, dissolving titanyl sulfate into water containing sulfuric acid; 2, respectively collocating a copper sulfate solution and a calcium nitrate solution; 3, adding the copper sulfate solution into a titanyl sulfate mixed solution for uniformly stirring, and then adding the calcium nitrate solution for uniformly stirring; 4, standing; 5, filtering; 6, washing; 7 drying. The decomposition temperature of the sulfur-free halogen-free fire-retardant fiber is near 150 DEG C, and the enthalpy value is high. When the sulfur-free halogen-free fire-retardant fiber is used on cotton fabrics, the limiting oxygen index is increased by 30 percent, and the amount of release of smoke is reduced by more than 40 percent. The method belongs to the filed of preparation of fire-retardant fibers.

The invention belongs to the technical field of hydroponic planting, and particularly relates to a hydroponic planting nutrient solution suitable for a balcony and a preparation method and an application of the hydroponic planting nutrient solution. The hydroponic planting nutrient solution comprises a solution A and a solution B, wherein the solution A comprises calcium nitrate tetrahydrate, potassium nitrate, EDTA, EDDHA and water; and the solution B comprises potassium nitrate, magnesium nitrate, potassium sulfate, potassium dihydrogen phosphate, ammonium dihydrogen phosphate, manganese sulfate tetrahydrate, zinc sulfate heptahydrate, copper sulfate pentahydrate, boric acid, ammonium molybdate tetrahydrate and water. According to the nutrient solution, the pH value of the nutrient solution can be stabilized between 5.5 and 6.5 in the hydroponic planting process under the condition that the element content and the proportional relation in all the nutrient solutions are maintained, and the nutrient solution is suitable for growth and development of crops. According to the nutrient solution, the pH value does not need to be intervened through acid liquor and alkali liquor, the workload of planting personnel is relieved, and the problem that the acid liquor and the alkali liquor stored at home are not safe is solved.