Rhein Lighting has provided a line of 2x4 flat Led Panel Light. The flat panel light has No LGP, back-lit design, and the lens is made of PMMA and will not yellowing over time, which is much more bright and more durable than edge-lit light panel. Take 2x2 led light drop ceiling for example, it can replace the equivalent of 420W fluorescent tubes, saving you up to 80% in energy consumption.
The led ceiling panel light provides long-life and uniform illumination, in addition to being equipped with a 0-10V dimmable driver. These led light panels are ETL, DLC, CE, ROHS approved, and it has a 5 years limited warranty.
Rhein Lighting is a specialized in the design and manufacture of led panel downlight, led slim down light, backlit led panel light, led rope light, Led Strip Light, led plant light and Led Grow Light etc.
2x4 Flat Led Panel LightEd 2X4 Panel,2X4 Led Panel Surface Mount,Cpx 2X4 4000Lm 40K M2,2X4 Drop Ceiling Led Light Fixtures Rhein Lighting Technology Co.,Ltd. , https://www.rheinlighting.com
In summer, high temperatures can significantly impact the normal growth and development of crops, leading to heat stress and damage. To mitigate these effects, several effective measures should be taken:
1. **Cooling through irrigation**: During hot periods, timely watering helps improve the microclimate in the field and lowers the temperature by about 1°C to 3°C. This reduces the direct harm caused by high temperatures to flowers and photosynthetic organs. Spraying cool water directly on crop stems and leaves using a sprinkler or sprayer also provides a cooling effect, typically lowering the temperature by around 1°C.
2. **Artificial pollination assistance**: In dry and high-temperature conditions, natural pollination for crops like corn and sorghum may become less effective. Artificial pollination can help reduce the negative impact of heat on the pollination and fertilization process, increasing the fruit-setting rate by 5% to 8% compared to natural pollination.
3. **Foliar application of nutrients**: During the hot season, continuous foliar spraying with solutions such as urea, human urine, pig or cow manure, potassium dihydrogen phosphate, superphosphate, or grass ash leachings can both cool and humidify the plants while supplying essential nutrients. However, it's important to adjust the concentration appropriately to avoid overloading the plants.
4. **Enhanced management practices**: Proper management of fertilizers and water during hot weather improves plant nutrition and enhances their ability to withstand high temperatures. For example, sweet peppers treated with a 30 ppm solution of p-chlorophenoxyacetic acid can reduce flower drop caused by heat. Tomatoes sprayed with 2000–3000 ppm B9 solution, 0.1% zinc sulfate, or copper sulfate solution can improve heat resistance, reduce fruit cracking, and prevent sunburn. Applying 2.4-D to flowers or smearing it on them can help prevent high-temperature-induced flower drop and promote ovary growth. In plastic greenhouses, covering with shade nets during summer can lower temperatures by 4°C to 6°C, protecting crops from rain, hail, and pests.