There are tricks in the unreasonable prevention and control of green onion

Onion farmers only pay attention to the single use of diammonium phosphate and urea, while ignoring the input of other elements, especially heavy plots. Spraying new high-fat membranes at appropriate time can prevent soil compaction, soil conservation, seedling protection, disease prevention and mitigation. Wait. The new high-fat film is an important intermediate in the pesticide production process, and can also be used for the synergy of pesticides and leaf fertilizers. Unreasonable application of base fertilizer and top dressing can cause excess nitrogen, and the proportion of large, medium and trace elements is seriously deregulated.

After soil testing, according to the phosphorus content of soil nutrients and the law of phosphorus and potassium requirements of green onions, the basic application and trace application rate of phosphorus and potassium fertilizers are determined; and medium and trace element fertilizers are added. The three elements of nitrogen, phosphorus and potassium in the base fertilizer should be proportioned in the ratio of 1:0.17:1.1, pay attention to the combined application of organic fertilizer. The self-mixing fertilizer is calculated according to the production of 5,000 kg of fresh onion per acre. The required phosphorus element is 6 kg, and the diammonium phosphate is 13 kg; the required potassium element is 20 kg, and the potassium sulfate is 40 kg. It is required that the diammonium phosphate can be applied once and the potassium sulfate can be partially applied and partially applied. Pay attention to the application of organic fertilizer and photosynthetic nutrient film, enhance the photosynthesis capacity nutrients and chlorophyll, advanced environmentally friendly plants to increase fertilizer, increase production, color enhancement, leaf hypertrophy, dry stem strong compound membrane.

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4G Mini Camera

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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