![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Plant growth regulators Plant growth regulators are pesticides that have stringent requirements in terms of use, such as the period of use, amount, and method of use. Must be used according to the instructions, otherwise it will have adverse consequences. The effects of plant growth regulators are generally obvious and stable, and are less affected by environmental conditions, so they are popularized and applied quickly and are easily accepted by users. It is a synthetic organic compound with plant natural hormone activity. According to its different regulation effects on crops, it can be divided into two categories: (1) growth-promoting, such as 920, 802, ethephon, etc.; (2) growth control, such as paclobutrazol, chlormequat, ketamine and the like.
Plant growth agents Plant growth agents are fertilizers, also known as plant nutrients, plant complex liquid fertilizers, and the like. It is a kind of nutrient which is made by combining a large amount of nitrogen, phosphorus, potassium, iron, zinc, manganese, boron, copper and other trace elements. Most of the crop roots absorb leaf water and make leaf surface fertilizer to supplement nutrients. Promote crop growth and development. Although plant growth agents have good effects on crops, they are highly selective in terms of environmental conditions, crop growth, and field management, and their effects are very unstable. Attention should be paid when using them.
SMD LED means surface mount Light Emitting Diode, SMD chip helps to improve production efficiency, as well as application in different facilities. It is a solid-state semiconductor device that can directly convert electricity into light. Its voltage is 1.9-3.2V, the red light and yellow light voltage are the lowest. The heart of the LED is a semiconductor chip. Encapsulated with epoxy resin. The semiconductor wafer is composed of two parts, one part is a P-type semiconductor, in which holes dominate, and the other end is an N-type semiconductor, which is mainly electrons. But when these two semiconductors are connected, a P-N junction is formed between them. When the current acts on the chip through the wire, the electrons will be pushed to the P area, where the electrons and holes recombine, and then emit energy in the form of photons. This is the principle of LED light emission. The wavelength of light is also the color of light, which is determined by the material forming the P-N junction.
Light Emitting Diode Smd,High-Power Light Emitting Diode,Smd Light With Led,Smd Led0805 Red Lights
Dongguan XINYUDA Technology Co., Ltd. , https://www.gdxige.com