The experimental area has a vegetable area of ​​15hm2. In the center of the vegetable field and around the ground, 20 solar insecticidal lamps were installed through the underground cement blocks, arranged in a checkerboard pattern, and the distance between the lamp and the lamp was 150-200 m. 1 lamp control vegetable field area 1 to 1.33hm2. Solar insecticidal lamp larvae from the ground height 1.3 ~ 1.5m. Automatically lights up from 8:00 PM to 2:00 AM, and turns off automatically the rest of the time. Every 15 days, the carcasses were cleaned and water was added.
The main performance of the trapping of natural enemies is small: Solar insecticidal lamps are used to trap vegetable pests and have minimal damage to natural enemies. According to statistics, a total of 32 natural enemies such as ladybugs, ladybugs, and bees were captured, which accounted for 0.48% of the total insect traps. The ratio of hazards to harm was 1:207. This shows that solar-powered insecticidal lamps have minimal damage to natural enemies, and have a strong specificity for trapping and killing of insect pests, and are safe to use. They can effectively protect natural enemies and promote ecological balance in the field.
The use of solar insecticidal lamps can significantly reduce the number of pests per vegetable crop in the vegetable field, reduce the use of chemical pesticides, and reduce the use of chemical pesticides by 25% to 25%. Reducing the use of pesticides and reducing farmland environmental pollution and pesticide residues in vegetable samples have little effect on natural enemies. Save work, save time, reduce work load on labor, kill insects can improve the quality of product safety and quality of vegetables, solar insecticidal lamp can also improve the competitiveness and system of green food, maintain the sustainable development of the vegetable industry, economic efficiency, Social and ecological benefits are significant.
Calcium carbide is an inorganic substance, the chemical formula is CaC2, the main component of calcium carbide, white crystals, industrial products are gray-black lumps, and the cross section is purple or gray. It reacts violently when encountering water, generating acetylene and releasing heat. Calcium carbide is an important basic chemical raw material, mainly used to produce acetylene gas. Also used in organic synthesis, oxyacetylene welding, etc.
Acetylene produced by the reaction of calcium carbide with water can synthesize many organic compounds such as synthetic rubber, synthetic resin, acetone, ketene, carbon black, etc.; at the same time, acetylene-oxygen flame is widely used in metal welding and cutting.
Store in a cool, dry and well-ventilated warehouse. Keep away from fire and heat sources. The relative humidity is kept below 75%. The packaging must be sealed and protected from moisture. It should be stored separately from acids and alcohols, and avoid mixed storage. The storage area should be equipped with suitable materials to contain the leakage.
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