First, use 2,4-D pollination. There are usually three methods of use: (1) spray method. Put the liquid in a small watering can, use a watering can to align the inflorescences that have opened 3 to 4 flowers, and cover the branches and leaves of the tomato with one hand to prevent the liquid from spraying onto the leaves and causing phytotoxicity. (2) Smear method. In the morning 8 to 10 am, use the brush to smear the inflorescence. (3) Dip method. Put the inflorescence into the bowl containing the liquid medicine, remove it immediately after immersing the flower stalk, and scrape off the excess liquid left on the flower to prevent the occurrence of deformed fruit. Regardless of the method used, each flower can only be processed once, and if it is repeated, it will form a deformed fruit. Second, vibration pollination. In the greenhouse vegetable field, the oscillator is held, and the flowers that have been opened are vibrated in the sunny morning to promote the pollen escaping and fall on the stigma for pollination. Third, the bumblebee pollination. Bumblebees can also visit flowers on cloudy days and at low temperatures, and are particularly suitable for pollinating winter greenhouse vegetables. The tomato flowering period is long, and two boxes of bumblebees should be placed in the greenhouse tomato per acre. Before placing the bees, check whether the gauze at the vents in the shed is flat. Do not wrinkle at the interface to avoid the bumblebee from dying. In the early flowering stage of the tomato, the beehives were placed in the center of the shed in the evening, and the beehives were 20 to 40 cm above the ground. Be careful not to spray pesticides during bees. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone When installing security Outdoor Camera, you should first choose the monitoring host. Do you want to add a monitoring card to your computer, or do you want to use an embedded hard disk recorder as your monitoring host. The computer monitoring card is more suitable for places that are familiar with computer installation, have professional personnel on duty, and have more functional requirements. Its overall investment is relatively low. Since the monitoring card is installed in the computer, the computer needs to be started 24 hours a day; As for the latter, it does not require professional knowledge, nor does it need to be on duty, and it is relatively simple to operate. Outdoor Network Wireless Camera,Network Wifi Camera,4g Outdoor Solar Powered Camera,Solar 4g Cameras,Solar Powered Cctv Camera Shenzhen Fuvision Electronics Co., Ltd. , https://www.szsolarcamera.com
To install security monitoring equipment, it is necessary to determine how many cameras are installed, and the quality and monitoring range of the cameras are affected. It is preferred to determine how many cameras are used for monitoring, and then determine the camera lens monitoring range according to how many cameras are available. Therefore, the distance from the camera to the monitoring point and the monitoring area must be clear. The infrared supply network recommends using the camera of 480 TV line, because it is more in line with that definition.
When installing security monitoring equipment, the third consideration is whether the camera has night vision function. If the monitoring is installed in a dark place, it is necessary to consider using a camera with infrared night vision function.
The security monitoring equipment can be installed via wired or wireless transmission. Although the cost of wireless network is relatively high, it can save a lot of installation trouble and make the monitoring site more beautiful. However, the installation of wireless network monitoring equipment should take into account the environmental problems of security sites. Cement building materials will shorten the wireless transmission distance, and metal building materials may complete the shielding of wireless signals. The infrared transmitter and infrared receiver should be far away from other appliances to avoid interference. Because the price of wireless network is almost twice that of wired transmission monitoring equipment, I suggest using wired transmission installation.
On site monitoring and network monitoring When determining the installation of the monitoring system, you should consider whether you need network functions. That is, if you need to monitor and control the monitoring site on the Internet at any time, you need to select a monitoring host with network functions. Avoid no network transmission function after installation.
A complete security monitoring equipment should at least have three parts: surveillance camera, PTZ and decoder. The following are their installation methods: