The high temperature has an adverse effect on the growth of vegetables, which is the basic cause of the fall of vegetables. Except for a few heat-tolerant varieties, such as wax gourd, pumpkin, bitter gourd, cardamom and spinach, most vegetables are not resistant to high temperatures. In the summer season, not only cool and refreshing vegetables such as spinach, cabbage, radish, and Dutch beans can grow, but also hi-temperature vegetables such as tomatoes and peppers are not suitable for planting. In addition, high temperature, high rainfall and high temperature and drought will cause many kinds of diseases and insect pests, resulting in significant production cuts, or even lost, intensifying the fall season. First, the main hazards of high temperature on the growth and development of vegetables: First, sunny summer noon vegetable soil surface temperature up to 40-50 degrees Celsius, high temperature inhibit root and plant growth, and induce a variety of diseases and insect pests, resulting in low yield, poor quality; Second, summer sunny days At high noon, high temperature and strong light burned the plants, which led to wilting of leaves and reduced photosynthetic capacity. Third, after summer rain became clear and sun exposure, soil surface temperature rose sharply, and surface water vaporization heat burned the leaves, resulting in serious fruit and vegetable vegetables falling. Second, the high temperature heat damage defense measures. First, spring sowing of hi-temperature fruits and vegetables (such as tomatoes, peppers, etc.) to avoid sowing too late, and to strengthen early management to ensure that the foliage lush to reduce the sun. Cultivating strong seedlings can also improve resistance to high temperatures. Second, more heat-resistant vegetables such as wax gourd, gourd, bitter gourd, aquarium, eggplant, cardamom, water spinach, etc. are planted in spring and summer; the third is established in Xialiang mountainous area with higher altitude. Anti-season alpine vegetable base in summer; Fourth, interplanting high-crop crops to shade and cool, such as the interplanting of eggplant and pepper, corn and pepper intercropping; Fifth, appropriate watering or micro-irrigation, cooling and cooling through moisture evaporation. In the high temperature and dry period, the spray irrigation effect is best in the morning or evening. Try to avoid high-temperature watering before and after lunch; sixth is to use shade nets to cover cultivation to prevent the sun from directly burning vegetables. This generally can be reduced than the open-air cultivation temperature 3-5 degrees Celsius; seven is the application of growth regulators to control the flower drop.
4G Mini Camera Structural components
The main structures and components of the camera can be listed from the working principle of the camera:
1. LENS
Lens structure, consisting of several lenses, including plastic lens or glass lens
2. Image sensor
It can be divided into two categories:
CCD (charge couple device): charge coupled device
CMOS (complementary metal oxide semiconductor): complementary metal oxide semiconductor
3. Digital signal processing chip (DSP)
There are many DSP manufacturers, such as VIMICRO 301P/L, SONIX 102/120/128, ST (Logitech LOGITECH's DSP provider), SUNPLUS (SUN+focuses on the development of CIF and VGA for single chip, but the image quality is average), PIXART (original phase), PAC207, SQ930C, etc.
4. Power supply
Two working voltages are required inside the camera: 3.3V and 2.5V. The latest process chip can use 1.8V.
Some cameras also use video transmission lines for synchronous power supply without external power lines.
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