The utilization rate of a nutrient for a crop varies depending on the source of nutrients. The same nutrient from different sources, their respective utilization rate will increase with the improvement of environmental conditions. The nutrient supply of soil to crops is closely related to the dynamic changes of water, gas, and heat in the growing period and the growth and development of crops, and it is difficult to determine by simple tests. Changes in environmental conditions cause changes in crop yields. Establishing a model for the relationship between soil nutrient equivalence and crop yield on the basis of agricultural ecological zoning is more practical. With respect to nutrients, due to unequal fertilization, high-nitrogen-low phosphorus or low-nitrogen-high-phosphorus phenomena often occur, causing spot dispersion. Therefore, it is better to control one factor in nitrogen and phosphorus at a certain level, and then find the relationship between the non-fertilizer yield and the nutrient equivalent of another factor. »The different soil constraining factors will also cause dispersion of samples. In practical applications, Even if the correlation between nutrient equivalence and crop yield is very good, the above three factors must be considered to achieve the desired implementation effect.
The soil nutrient equivalent organically combines soil nutrients with fertilizer nutrients, making them both additive. Therefore, in a certain ecological area, soil nutrient supply equivalents can be estimated through a soil testing and fertilizer applicator, and fertilizer requirements under different nutrient conditions can be determined. After determining the maximum nutrient content using the total nutrient model, the average nutrient utilization rate can be calculated at the highest yield. The average nutrient utilization rate reflects the effect of specific ecological conditions on nutrient availability. Fertilizer utilization is affected by the availability of nutrients in the soil and is consistent with diminishing returns.
Through the analysis of soil testing and formula applicators, there is an equivalent relationship between soil nutrient supply and fertilizer nutrient content, and the soil nutrient equivalent can be determined by the regression relationship with crop yield. Soil nutrient equivalent, as an important indicator of soil nutrient supply capacity, can save a lot of test costs, and avoid the contradiction between the test results and the actual supply of soil nutrients.
2023 New Hot Sale Fiber Laser Cutting Machine A Series
The imported helical gear design of the reducer can withstand greater torque than the general straight tooth output.
High precision, small product volume, low noise, fully enclosed design, to ensure that the lubricating grease does not leak, and the transmission efficiency is as high as 95%.
The internal components are made of alloy steel, which can cope with various harsh environments.
Laser head structure
1.The Z axis refers to the direction in which the laser head moves up and down
2.Structural composition: 1. Servo motor; 2. Guide rail slider; 3. Mounting seat; 4. Laser head, etc.
3.Structure introduction: It can adapt to different specifications of pipes by adjusting the up and down movement of the laser head.
4.Structural advantages: the mechanism is simple, stable and easy to operate.
The Z-axis can be both follow-up and numerically controlled: in order to solve the problem that the laser focus fluctuates due to the uneven surface of the pipe, which affects the cutting quality, the cutting head (Z-axis) must follow to keep the focus constant. In addition to the follow-up function, the Z axis of the cutting machine also has the same display and control functions as the X and Y axis.
Graphic display: The machine has the functions of analog graphic display and dynamic graphic tracking display for the edited part program, which makes the processing more intuitive and easy to monitor and control.
Multiple alarm functions: The CNC system of the machine has the functions of self-checking, alarming and automatic protection, and also has alarm display and automatic protection for external conditions.
CNC control system: The system adopts an integrated structure, central control and display operation unit structure. The system is based on windows CNC system. The display operation unit provides a good man-machine interface and displays various operation information. The operation panel has function keys for machine tool operation.
Low-voltage electrical system: The low-voltage electrical system is located in the electric control cabinet, which is the interface part of the electrical control of the whole machine. The power supply, relays, circuit breakers, contactors, and servo drive systems required by the electrical control system are installed in the electric control cabinet.
Using high-quality stainless steel cold water circulating pump, large flow, high lift, low noise, long life; stainless steel water tank, pipeline, stainless steel valve will never worry about rust.
The control system adopts LCD full Chinese (or full English) computer controller, CPU automatic control, simple and intuitive operation. The control accuracy is as high as ±0.1℃; it has the function of automatic fault diagnosis, which directly displays the fault point on the screen, prompting the user to deal with it quickly. And the fault signal can be directly transmitted to the CNC numerical control system through the data line to avoid damage to components and equipment.
Provides multiple protection functions, passive alarm terminals, and remote control terminals, which are easy to realize centralized control and monitoring of CNC; among them, the "dual temperature type" precision water cooler provides stable and accurate water temperature control for the laser, and also provides a channel with The water temperature similar to the ambient temperature is used for lens cooling, which solves the problem of damage to the lens caused by condensation when cooled with low-temperature water, and is the best choice for cooling the entire laser equipment.
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GUANGDONG CHITTAK INTELLIGENT EQUIPMENT CO.,LTD , https://www.chittakcutting.com