Every spring, the “cold spring†has become a major “killer†for the production and income increase of fruit trees. What effective measures can be taken to minimize the losses caused by such natural disasters?
The “cold spring†has caused damage to all fruit trees, especially the damage to apricots, cherries, apples, pears, kiwifruit and other early flowering fruit trees. Conditional winter irrigation and spring irrigation are needed. Winter irrigation can maintain ground temperature and avoid frostbite of fruit trees. Spring irrigation can reduce ground temperature and delay budding and flowering of fruit trees.
Another method is to dry the skin and apply amino acids to the trunk to increase the nutrition of the tree and enhance the cold resistance of the tree. If the pesticide is added to the metal ginkgo diluted 4,000 times, the overwintering pest that lurks on the trunk can be put. Kill. Can also use lime, lime sulfur, salt, vegetable oil smear the trunk, the ratio is 5:1:0.5:0.5. The purpose of applying salt and vegetable oils is to prevent the trunk cracks from falling off, and Tu Tuo sulfur can both prevent freezing and prevent insects.
In addition, the traditional method of anti-frost frost is also very effective, the specific approach is that when the temperature dropped below zero degrees Celsius, the top of the orchard will be littered with firewood, requiring firewood can not be too dry, or smoke less effective. It is best to have all the orchards that can be joined together in a unified manner. This works best.
Crosswalk Led pedestrian Traffic Light
A set of Led pedestrian traffic light composed of a red pedestrian standing pattern and a green pedestrian walking pattern inside to guide pedestrians to pass.
When the green light is on, pedestrians are allowed to cross the crosswalk.
When the red light is on, pedestrians are prohibited from entering the crosswalk, but those who have already entered the crosswalk can continue to pass or stay at the center line of the road to wait.
The LED pedestrian crossing light is a new concept traffic signal light developed by our company using the most advanced LED light-emitting devices abroad. Its wick has good viewing angle, uniform brightness, chromatographic standard, low power consumption, long life, reduced degradation, high reliability and strong stability. , Good temperature resistance, wide voltage operation range. The lamp body is made of aluminum die-casting one-time die-casting, which is specially designed for LED lamps. The lamp cover is opened in V-shaped design, and it can be screwed by hand without any tools. Double sealing, ultra-thin design and light weight. It is a trendy product of today's traffic pedestrian lights, and all indicators meet or exceed the GB14887-2003 standard.
2. Appearance and structure
LED pedestrian crossing lights are composed of two parts, red people forbidden images and green people allowed to communicate. The shell adopts the lamp housing independently developed and produced by our company. The lamp housing has the following characteristics:
1. Using special pc shell, light weight, high strength, small deformation under high and low temperature conditions, and strong corrosion resistance.
2. The lamp housing is specially designed for pedestrian crossing lamps. It is small in size and beautiful in appearance. During the production process, it has undergone multiple processes such as die-casting, screening, trimming, shaping, and spraying. The surface of the finished product is smooth and clean, free of cracks, burrs, and silver wires. And other defects.
3. The color of the lamp shell is black, which is bright in color and will not fade after long-term use.
4. Appearance shape, using square shell, square shade lampshade, glass fiber reinforced plastic translucent color film with uniform brightness, wide vision and strong light transmission.
5. Airtightness. In order to maximize the dustproof and waterproof performance of the lamp housing, double sealing technology is adopted. First, a waterproof sealing ring is specially designed at the joint between the lamp cover and the lamp housing, and a special seal is used inside the signal lamp. The tray seals the LED luminous lamp sheet and the power supply with the transparent cover and the tray to maximize the sealing effect under various outdoor weather conditions. Through the above measures, the protection level of the signal lights produced by our company can reach the IP53 standard.
6. Installation, the signal lamp housing is designed with full consideration of various installation forms, and is equipped with a variety of mounting brackets, and a universal chainring is designed at both ends of the signal lamp to facilitate adjustment of the installation angle; the lamp cover adopts an open form, and Specially equipped with hand-tightening fixing screws, the lamp cover can be opened without any tools during installation and maintenance.
7. The signal lamp needs to be used outdoors for a long time. In addition to ensuring the durability of the main body of the lamp housing, our company uses stainless steel screws to fix each signal lamp assembly.
3. Lamp housing material
1. The signal lamp shell is made of aluminum die-casting, which is light in weight and good in strength. It is not easy to be deformed and aging when used outdoors for a long time.
2. The sunshade and decorative strip of the signal light are made of ultra-thin metal, which has high strength and good flexibility.
3. The color film adopts toughened glass, which has good light transmission, is not easy to get dust, and it is broken and harmless to people.
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Shenzhen Wide Way Optoelectronics Co., Ltd. , https://www.wdmtrafficlight.com