The main cause of strawberry malformation is poor pollination and fertilization, but the extent of its occurrence is related to factors such as variety, grade of flowers, insects visiting flowers, temperature and humidity, and spraying of flowers during flowering. Therefore, the following countermeasures should be taken into consideration in the prevention of strawberry malformation in production. Arrangement of suitable pollination varieties Due to the difference in sex between females and males, strawberries should be selected as pollination varieties and mixed with the main cultivars. Baochao Zaosheng and Chunxiang are rich in pollen. Yantai greenhouse strawberry, the main cultivar is Baozao Zaosheng, and pollination varieties are Chunxiang, Fengxiang, etc. Cases account for 5% to 10%, which can effectively reduce the malformation rate. In the shed, strawberries planted with beehives are cultivated in early flowering periods, and there are few natural flowering insects in the early stage. Therefore, it is better to place beehives in the protected areas. This method has been widely adopted in Japan and works well. The bees usually fly at a distance of 400 meters. The visiting time is from 8 to 9 am to 3 to 4 pm, with an active temperature range Generally at 15 ~ 30 °C. Other visiting flower insects should also be protected and utilized. Temperature and humidity control during the flowering period should strictly protect the temperature and humidity in the ground. The temperature should be controlled at 20 ~ 28 °C. It is necessary to release air in a timely manner to reduce the temperature and humidity. Using a drop-free film prevents the effect of water droplets. Drip irrigation can effectively reduce the air humidity in the protected area. As long as the surface does not dry during flowering, it generally does not require irrigation. Sparsely fruiting and fruiting sparse prone to the occurrence of high grade secondary flowers, which can significantly reduce the abnormal fruit rate of strawberry, and it is beneficial to concentrate nutrients and increase fruit weight and fruit quality. In order to reduce the number of pesticides used for the protection of pests and diseases in protected areas, integrated measures based on agricultural control should be adopted, and as little or no medication as possible should be used. If the pests and diseases are more serious, you should pay attention to medication before or after flowering. Artificial pollination was performed at 11 to 12 noon during the peak of anther cracking, and manual artificial breeze (using a fan, etc.) was used to artificially assist pollination, which also had good results.
4G Mini Camera Structural components
We are manufacturer of 4G Mini Camera in China, if you want to buy Shenzhen Mini Hidden Camera,1080P Wifi CCTV,Intelligent Dv please contact us.
Hidden 4G Mini Camera,Shenzhen Mini Hidden Camera,1080P Wifi CCTV camera,Intelligent Dv Camera Mini,Recorder Wireless Camera,Mini Spy Hidden Camera HD Shenzhen Fuvision Electronics Co., Ltd. , https://www.outdoorsolarcameras.com
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.