For winter melon cultivation, under the premise of cold protection measures, early sowing is better than late sowing, and it can be sowed in early and mid-January. The technical points of winter melon planting mainly include the following aspects: The sowing period is from the small cold to the big cold period, and it shall not exceed Lichun at the latest. For site preparation, choose fields with convenient irrigation and drainage and fertile soil. After raking and leveling, ridges are formed every 1.9 meters. Apply enough base fertilizer to apply 1000 to 1500 kg of decomposed pig manure per mu, preferably in strips. The seeding adopts double-row sowing, requiring plant spacing of 85-90 cm, sowing about 900 litters per acre, and sowing 3 seeds per litter. Later, the melon seedlings will grow to the two-leaf stage with 2 seedlings per litter, and the five-leaf stage with 1 seedling per litter for planting. . After the film is covered for heat preservation and sowing, the film should be covered immediately, and the 1.85-meter-long bamboo cuttings are cut into an arc. After the film is covered, the two sides are pressed with soil. Cultivation, weeding, fertilization and soil cultivation. When the seedlings grow to the three-leaf stage, weeds should be weeded, but herbicides should not be used to prevent the melon seedlings from being killed by the medicine. After uncovering the film, apply 500-750 kg of decomposed pig manure, 25-35 kg of peanut bran, 25 kg of compound fertilizer, 10 kg of potassium chloride, and 50 kg of calcium-magnesium-phosphate fertilizer per mu, and cultivate the soil after fertilization. The black-skinned wax gourd grown off-season for pollination and protection melon is suitable for the 18th to 22nd nodes, that is, the third and fourth female flowers and the melons, the rest should be removed. When the melon begins to droop and bend its neck after pollination, remove the head and side buds of the melon seedling from the 15th leaf from the back of the melon (commonly known as topping). Disease prevention and control The main diseases to be controlled are wilt, blight, blight and downy mildew. The black-skinned wax gourd can be picked and marketed 30 to 35 days after pollination and the shape of the melon is about 90% large. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. 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: