The requirements of soil and the formula for keeping the soil
The soil is inseparable from the soil for a lifetime. Breeding soil is a place where the earth elements live and reproduce, and it is also a safe haven to avoid disadvantageous factors. The quality of the feed soil and the composition of the material it contains are directly related to its ability to grow and develop smoothly.
The time taken for earth extraction is generally taken during the winter. At this time, there are few pathogenic microorganisms, pests, and eggs in the soil and it is easy to purify.
Take soil requirements to loose and breathable soil. The advantage of loose soil quality is that oxygen is sufficient, and the second is to facilitate drilling and drilling of earth elements, which is beneficial to their growth and development. The acidity and alkalinity of the soil is suitable for neutral or slightly alkaline, and the particle size is suitable, so as to facilitate screening of the egg sheath at the later stage of earth element growth.
Sterilization sterilization sterilization: first sterilized drugs dubbed a solution, and then mix in the feeding soil, piled up and stuffy for a certain period of time after use. Sterilization of feeder soil 0.1% to 0.2% of potassium permanganate solution can be mixed with soil, 0.1% solution of benzalkonium chloride and 0.1% to 0.2% of copper sulfate solution can achieve the desired results. Disinfestation: Use 100% of 80% dichlorvos EC per cubic meter of soil, dilute it 100 times, evenly spray it on the soil, and spray it to make it as evenly distributed as possible. Then covered with plastic film, four weeks pressure, to prevent air leakage, accumulation of a week or so open up the air 10 to 15 days before use. The higher the ambient temperature, the better the insecticidal effect. Pay attention to spraying the liquid to stand upstairs, downwind of the livestock must also rush to his place to prevent poisoning.
Adding filler can add lime powder to the soil. The first is to supplement the calcium consumed by the earth element during spawning and molting to promote rapid growth, and the second is to play the role of disinfection and sterilization.
The first formula for cultivating soil is 40% ash, and 60% pure soil (with low impurity content) is mixed thoroughly. The second is 90% of pure soil and 10% of ash. Pure soil can also be used directly. Both of the above formulas can prevent the growth of germs.
The small Traffic Light is a small traffic light suitable for children's teaching, playground and decoration. It adopts low voltage, green energy, economical and environmentally friendly, does not contain harmful substances, and does not emit pollutants. A safe and environmentally friendly traffic light.
Traffic signals can enable vehicles to run in an orderly manner, reduce traffic congestion, and reduce traffic accidents, so that all traffic participants can drive in an orderly manner, avoiding the time waste caused by traffic congestion and the loss of life and property caused by traffic accidents.
The composition of traffic lights: traffic lights are composed of red, green, and yellow lights.
Types of traffic lights: Traffic lights are divided into motor vehicle lights, non-motor vehicle lights, pedestrian crossing lights, lane lights, direction indicator lights, flashing warning lights, road and railway intersection lights.
Traffic accidents that do not follow the directions of traffic lights and run red lights are repeated. The root cause of these problems may be related to childhood education and traffic safety awareness. Because the road traffic signal signs in counties and towns have not been widely used, or because there are few road vehicles in towns, people running red lights and becoming a habit, then how to avoid these problems, we need to grasp the root of the problem. Improve people's awareness of traffic safety and strengthen the learning of traffic safety knowledge.
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