The best time for apple tree to apply base fertilizer is to apply base fertilizer before germination in spring, and the fertilizer effect is slow. It has little effect on flowering fruit setting and new shoots in spring, but it will lead to excessive growth of tree body in the later stage. Flower bud differentiation and fruit development. It is recommended to apply less base fertilizer as much as possible, and apply more foliar fertilizer. At the same time, it can be combined with spring irrigation and topdressing fertilizer, with nitrogen and phosphorus fertilizer as the main, with appropriate amount of potassium fertilizer. In order to promote flowering and fruit setting, the tree should be applied with nitrogen fertilizer or foliar spray fertilizer from early March to early April. The flowering period can be sprayed with 2% ammonium sulfate, 0.3% potassium dihydrogen phosphate or 0.2% borax solution. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
What is Mini Camera
Micro mini camera is a product of modern high-tech, also known as micro monitor. It has the characteristics of small size, powerful function and good concealment.
Wireless camera
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Micro cameras are widely used in aviation, commerce, media, enterprises, institutions, families and other industries. The appearance of micro cameras has brought convenience to people's lives. At the same time, some phenomena related to corporate secrets and personal privacy have also emerged.
In 1991, the world's first camera (called CoffeeCam) first appeared in the Trojan room coffee pot at the University of Cambridge, UK.
The oldest camera, FogCam of San Francisco State University, has been used since 1994
In 1996, AXIS Communications published the first IP Camera using Internet architecture as the basis for signal transmission.
In 1999, AXIS Communications published IP Camera based on Linux system.
Wireless equipment is used stably in domestic wireless environment. The micro wireless surveillance camera has the characteristics of high stability, high speed, long distance and multi-point testing. It can play a huge role in the fields of environment, energy, construction, transportation, medical treatment, industrial machine condition monitoring, etc., especially when the cabling is complex, the cabling cost is high, the long-distance and large-scale transmission of data and the mobility demand is high.
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