Compounding (combined) fertilizers have a significant effect on the yield of fruit trees because of the various nutrients required for fruit trees. However, in the course of operation, the fruit trees are reduced due to improper selection or improper application. How to choose the right compound fertilizer, pay attention to the following points:
1. Pursue suitable compound fertilizer according to local soil characteristics. For farmers who are located in alkaline soils in the north, acid compound fertilizer should be purchased. On the contrary, farmers in southern acid soil should choose alkaline. Compound fertilizer; for soils with low organic matter content, it can generally be combined with the application of organic compound fertilizer or organic and inorganic compound fertilizer.
In addition, for the alkaline soil in the northwest, it is generally not suitable to select and apply the compound fertilizer produced by using 枸soluble phosphorus, potassium chloride and ammonium chloride as raw materials.
Second, according to the variety of crops to buy compound fertilizer for vegetables, fruit trees and other economic crops, especially root crops, because of the need for more potassium, should use the higher potassium-containing NPK compound fertilizer; for chlorine-free crops such as grapes, Potato, tobacco, sugar beet, etc. should not be applied with potassium chloride and ammonium chloride as raw materials to produce a compound fertilizer with high chloride ion content.
Third, according to the nature of fertilizers to buy compound fertilizer farmers friends should usually learn to understand and master a little about the common sense of fertilizer, easy to buy their own fertilizer. For example, GB15063-2001 national standard stipulates that the effective nutrient content of compound fertilizer (composite fertilizer) is divided into high, medium and low: high concentration of NPK ≥40%, medium concentration of NPK ≥30%, low concentration of nitrogen and phosphorus Potassium content ≥ 25%, excluding trace elements and medium elements; water-soluble phosphorus content ≥ 40%. The nutrient content is different, the quantity applied and the technical requirements are different, of course, the price is different.
Fourth, according to the fertilization method to purchase compound fertilizer to improve the fertilizer efficiency of compound fertilizer, different dosage forms of compound fertilizer should be used for different fertilization methods. For example, when making base fertilizer, it is necessary to purchase granular compound fertilizer, or to purchase compound fertilizer containing slow-release fertilizer, which has long fertilizer effect and is beneficial to increase the utilization rate of nitrogen. The effect of humic acid compound fertilizer is generally better than that of topdressing.
V. According to the principle of balanced fertilization, it is necessary to understand the characteristics of soil and the fertilizer requirement of crops. It is best to combine with soil testing and formula fertilization. According to the principle of balanced crop nutrition, according to the reasonable results of soil testing results, what is missing? What, to achieve a balanced supply of crop nutrients. Finally, it should be noted that the compound fertilizer is relatively fixed, must not be blindly selected and applied, nor can it be applied as a single fertilizer to avoid unnecessary loss and waste.
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What is Indoor PTZ Camera
PTZ: In the security monitoring application, it is the abbreviation of Pan/Tilt/Zoom, representing the pan tilt omnidirectional (up and down, left and right) movement, lens zoom and zoom control.
PTZ: In the security monitoring application, it is the abbreviation of Pan/Tilt/Zoom, representing the pan tilt omnidirectional (up and down, left and right) movement, lens zoom and zoom control.Automatic tracking is divided into three types: one is through embedded video encoder, also known as intelligent visual server; the other is PC software; the other is to directly write the tracking algorithm to DSP chip, and then design the DSP chip as a hardware circuit on the high-speed ball motherboard, and the high-speed ball is directly read. Among the three types, the third type is used most in the current market.
The intelligent vision PTZ automatic tracking and monitoring system consists of an intelligent vision server (responsible for intelligent analysis and command) and a high-speed spherical camera (responsible for tracking targets). The automatic PTZ intelligent tracking function enables the camera to automatically PTZ drive its own PTZ and zoom lens, and automatically control the PTZ camera to rotate the PTZ in all directions and zoom the lens, and perform visual oriented automatic tracking for the locked moving target, so as to ensure that the tracking target continues to appear in the center of the lens with a close-up image, so that the security personnel can see the information more clearly, It can also be used for obtaining evidence afterwards. The automatic PTZ tracking module makes up for the narrow field of vision of fixed camera monitoring, which is an essential function of a perfect security monitoring system.
The intelligent vision PTZ automatic tracking and monitoring system has the target analysis function, and is equipped with a high-resolution camera, a large magnification optical zoom lens and a high speed PTZ, which can automatically capture suspicious targets quickly and accurately. By setting the preset position intelligent vision PTZ automatic tracking monitoring system, the preset position scanning, automatic cruise and other functions can be realized, and many special requirements of intelligent monitoring can also be realized. In addition, the intelligent vision PTZ automatic tracking and monitoring system also has the advantages of beautiful appearance and strong concealment, so it is very suitable for public security intelligent monitoring applications in airports, squares, rail transit, villas, government administrative units, military regions, museums and other types of places.
The automatic PTZ tracking and monitoring system integrates optics, electronics, machinery, information processing and network, and is composed of camera, power transmission, motion control device, image analysis, recognition, compression and communication based on high-speed parallel processing. It has the functions of video camera, position control, orientation and lens preset, moving object detection, recognition and tracking, flame and smoke detection and alarm, etc. It can be widely used in buildings, banks, airports, stations, customs, transportation, power, factories and mining enterprises and other security monitoring occasions.
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