What is the relationship between diminishing returns and fertilization?
The law of diminishing returns means that under the premise of relatively stable production conditions, with the increase of the amount of fertilizer, the yield of crops will also increase, but the amount of fertilizer per unit of fertilizer increases instead, so the amount of fertilization should be appropriate.
(1) Increased production of fertilizing materials x The unit price is greater than the amount of fertilizing materials x the unit price of fertilizers. At this time, adding chemical fertilizers is economically advantageous, that is, increasing production and increasing income.
(2) Increased production of fertilizing materials x The unit price is equal to the increased fertilizing amount x fertilizer unit price. At this time, the total yield of adding chemical fertilizers is the highest, which can be called the optimum fertilization amount.
(3) If the fertilization amount is increased after the optimum amount of fertilizer is applied, the unit price of the increased production x product is smaller than the unit price of the increased fertilizing material x fertilizer. At this time, increasing the fertilizing material will result in a slight increase in crop yield and even the highest yield. However, increasing fertilization material has become a loss-making business, resulting in a decrease in total revenue.
(4) After reaching the maximum yield, increasing fertilization will lead to a reduction in production.
According to the above law of decreasing fertilizer, we should pay attention to fertilization: fertilization should be appropriate, do not blindly pursue the highest yield, "How bold are people, how much production in the land" is against the objective law.
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.
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 camera
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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