Close doors and windows to prevent thief wind invasion, the north window must be blocked, when the temperature is low, it is best to add a mezzanine under the roof, or 2 meters away from the ground bamboo racks, covered with straw or plastic sheeting, in order to facilitate insulation .
Late release early morning and late release of ducks, late morning early duck, reduce the number of ducks into the water, shorten the time to launch. When there is sufficient sunshine, the ducks can be allowed to spray water once every 10 minutes in the morning and afternoon.
The increase in feed temperature from cold to warm in spring and sunshine increases, and it is beneficial to ducks to produce eggs. It is necessary to create a stable and high-yield environment and meet the needs of ducks and ducks in terms of the quantity and quality of feed.
Ensure that the green feed supply can spread the green feed on the water during the day to allow the ducks to feed freely. At night, the ducks are fed into the basket and fed in the center of the house. The green and fine ingredients each account for 50%. In the absence of green material, the multi-dimensional egg can be added. instead.
At the end of spring, there was an increase in rainfall at the end of spring in the Yan River, and the humidity in the house was relatively large. Ducks were prone to egg loss and hair exchange. Therefore, it is necessary to provide more ventilation, diligently change the bedding, keep the house dry, prevent feed from becoming moldy, and regularly disinfect the duck house, feed trough, and drinking fountain. On sunny days, ducks are allowed to move outside their homes and touch the sun.
Insect pheromones are compounds used by insects to represent various information such as aggregation, foraging, mating, and alerting. They are the chemical molecular language of insect communication. At present, the basic control measures for pests in agricultural production mainly rely on chemical pesticides, but the long-term uncontrolled use of chemical pesticides has brought many side effects. The first is the emergence of pest resistance, which causes the use of drugs and drug concentrations to increase, the cost increases year by year, and the prevention and control of increasingly difficult; the second is to disrupt the ecological balance, while controlling a large number of natural enemies were killed, causing the pupae of secondary pests; Third, it pollutes the environment. A large amount of pesticides remain in crops, soils, rivers, lakes, and seas, and they are enriched in the human body through the form of food chain, causing another harm to humanity. Therefore, relevant research departments in many countries are currently working hard to explore and study new approaches and technologies for pest control. These studies include: the development of new, efficient, environmentally friendly, low-toxic, low-residue chemical pesticides; natural enemy insects and microorganisms The use of pesticides; insect sterilization technology and the application of insect hormones; among them, the research on the use of insect hormones, especially insect sex pheromones for pest control, is receiving increasing attention and attention.
Research on insect pheromone has been developing rapidly. Since the first insect pheromone Bombykol, has been isolated and identified, more than 2,000 insect pheromones and their analogs have been identified and synthesized worldwide, of which more than 100 insect pheromone To achieve commercial production, the production and research of Lepidoptera sex pheromones is the most extensive and comprehensive.
Pheromone
Insect communication, Including Sex pheromone, Collection pheromone,Alert pheromone, Tracking pheromone
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