Because the pupa is a temperature-changing animal, changes in outside air temperature rise and fall have a great influence on its growth. In order to shorten the aphid culture time and create better aquaculture benefits, warming and heat preservation measures are generally used to prolong the growth period of cockroaches and shorten or even eliminate hibernation time. Commonly used methods are constant temperature culture and plastic greenhouse cultivation. Constant temperature culture: Constant temperature culture, also known as no hibernation culture, uses artificial temperature control methods to break the habit of hibernation, making it in a good state of growth and development throughout the year. The most critical equipment for constant-temperature breeding is a greenhouse with a certain area that can be warmed, temperature-controlled, and well-insulated. These conservatories can be newly built, or they can be transformed with existing ordinary houses and plastic sheds. No matter which kind of greenhouses must meet the following four principles: First, economical and practical; Second, with heating and insulation conditions; Third, to maintain good ventilation; Fourth, the structure of scientific and rational, easy to manage. Plastic greenhouse cultivation: During the day, full use of the sun's radiation to increase the temperature inside the plastic greenhouse, in the evening, timely cover the plastic greenhouse with straw to make it insulate, minimize the temperature difference between day and night, shorten or even cancel the hibernation period, extend the growth time of cockroach, Improve the breeding efficiency. Because plastic greenhouses rely on the irradiation of the sun, they must pay attention to changes in the weather: in case of rain and snow, temporary warming measures should be taken to avoid hibernation. If you hibernate, you should not wake it up easily. If you repeatedly hibernate during a winter season, you will cause more casualties; when spring arrives, the temperature increases, attention to timely ventilation, a fresh air supplement, and the prevention of over-temperature in the shed; in the summer, the plastic sheeting must be uncovered and replaced. Shade cloth, or shading with grasshoppers.
Laser Tape Measure
2 in 1, as its name, it is one product with traditional tape measure and
digital laser distance measurer. Laser measure tape can measure 40m with laser
measurement and 5m of the measuring tape. Convenient, smart, accurate, laser
tape measure make every measurement simple in life!
Using a laser tape
measure, one can measure short distance with stiff tape measure, while just put
a single button to measure long distance up to 40m and the result will show on
a small LCD screen.
No need to climb
up and down, crawl on the floor, save your labor and time from now on! Laser
tape measure, a simple device to change your life!
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