Prepare a nutrient matrix. Before the cutting, the materials and substrates that are easy to breathe, nutrient-free, pathogen-free and pest-free should be selected as seedbeds, such as fine river sand, perlite, and burnt soil. The seedbed is moist without water.
Drug treatment. The use of 1 mg/kg of vitamin B in combination with a root-dissolving solution to soak the base of the cutting for 12 hours, followed by plant growth agent treatment had better rooting effect. With 0.1%-0.5% potassium permanganate and a new high-fat membrane treatment of some tree species also significantly promote the rooting effect.
Use high quality cuttings. Different varieties, cuttings rooting is difficult. Easy to root such as fir, willow, grapes, etc.; not easy to root a pear, magnolia, etc.; difficult to root the pine, walnut, lychee and so on. As the age and age of the same species and branches grow, rooting capacity will decline. Branches are abundant in autumn and winter, and the rooting power is stronger than in the spring after the dormancy period.
Control the microclimate. The microclimate mainly refers to the light, air, temperature, and humidity of the garden. The light is mainly dark, and oxygen should be appropriately increased to facilitate the life activities of the cuttings. The temperature should be 23-25°C, and the relative humidity should be 70%-80%.
Heating treatment. In general, the seedlings begin to germinate at an air temperature of 10 to 12°C, and the rooting temperature of 18 to 25°C is the most favorable. In early spring, cuttings often cause difficulty in rooting because of soil temperature. It is possible to artificially increase the temperature at the lower part of the cuttings, spray a new high-fat membrane, ventilate, and reduce the temperature at the upper end of the cuttings.
Rhodium powder Rh≥99.95% Properties: silver-white metal, extremely hard, wear-resistant, also has considerable ductility Application: It can be used as raw material for electrical instrumentation, chemical industry and manufacture of precision alloys. Rhodium powder is based on the widespread use of ruthenium in the industrial industry. Since rhodium is a rare metal required by the industry, the industry price is slightly higher than that of general non-ferrous metals. Rhodium, one of the rare elements, has various uses. Rhodium can be used to make hydrogenation catalysts, thermocouples, platinum-rhodium alloys, etc. It is also often plated on searchlights and reflectors, and is also used as a polishing agent for gemstones. and electrical contact parts.
precious metal
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