C. They didn't grow at all. D. They grew better than those under natural sunlight. 相关知识点: 试题来源: 解析 B。解析:文中提到“The plants under LED lights showed different growth patterns depending on the color of the LED.”,所以植物在 LED 灯下的生长取决于 LED 的颜色。反馈 收藏 ...
What’s important to keep in mind when choosing grow lights for house plants is that each kind of artificial light brings along a unique set of pros and cons. By knowing what the benefits and drawbacks are, you can choose a bulb that’s right for you and your plant. Here’s a look ...
You might be asking yourself, “Why do I need to factor lumens/PAR? Can’t I just use a certain number of watts per square foot in my grow room?” While you could just base the amount of necessary light for your plants on the size of your grow room or grow tent, doing so won’...
Yes. HPS lights can be used for the entire cannabis grow from seed to harvest, though many growers like to start with a Metal Halide bulb in the same fixture before the cannabis hits the flowering stage because the MH bulb encourages cannabis plants to stay shorter. HPS grow lights tend to...
However, if you choose to usegrow lightsindoors, you can adjust how intense the light is by changing the distance between the lights and your plants. You can also use higher-powered bulbs. That said, you do need to be careful about too much heat. The closer to the plants the bulbs are...
Each type of cannabis grow light (LEDs, HPS, LEC, etc) has a "sweet spot" of how far to keep from your plants. Learn the sweet spot for your grow light!
Plants have different watering needs, depending on the type. Too much water is just as damaging as not enough water. Unfortunately, there is no simple rule to determine how much water to use for your particular plant, but there are certain things that you can watch out for. If the leaves...
To measure the amount of the grow light inside the grow tent, use aPAR Meter. Measuring light is important to ensure the optimal PPFD values to make plants thrive and yield. Using a PAR meter shows how much energy the grow light gives off and what lands on the plant. The optimal range...
Many lupins are poisonous, so always wear gloves when handling plants or seeds. For instant impact, lupins can be bought ready to plant straight out into the soil. To plant straight out: Use the spade to a dig a hole in the border. ...
NARRATOR: Listen to part of a lecture in a botany class.FEMALE PROFESSOR: OK. Last time we talked about photosynthesis, the process by which plants use light to convert carbon dioxide and water into food.Today I want to talk about another way light affects plants.I am sure you all know ...