Answer: The radish split is the result of the expansion of the lateral root of the radish. The main reasons are several: First, the soil. Planting radishes must choose deep and well-drained plots. If there are hard objects such as stones in the soil layer, it will hinder the growth of radish roots, which will cause the lateral roots of the radish to expand and bend, causing the radish to fork. The second is the cause of moisture. Radish needs sufficient water during the growth process, but it should not be too high. If the water is high for two days, it will cause poor soil aeration, inhibit the main root of the radish and form a lot of lateral roots, so the drainage work must be done well. The third is the reason for fertilization. Radish fertilization, especially farmyard manure, must be thoroughly decomposed, and unfertilized farmyard manure can cause radish root malformation. The fourth is the reason for the temperature. Radish must pay attention to the shed film before sowing, keep the temperature suitable, otherwise it will easily cause the radish fork. The fifth is the cause of pests. Underground pests will eat radish, inhibit the growth of the main roots, causing lateral root enlargement, bifurcation or deformity.
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Roundness Measuring Instruments
Roundness meter is a length measuring tool for measuring roundness using the rotary axis method. The roundness meter is a measuring tool for measuring the roundness error of the workpiece using the rotary axis method. Roundness tester is divided into two types: sensor rotary type and workbench rotary type. During measurement, the measured part is installed concentrically with the precision shaft system, and the precision shaft is attached with an inductive length sensor or a workbench for precise circular motion. It is composed of sensor, amplifier, filter and output device of the instrument. If the instrument is equipped with a computer, the computer is also included in the system.Roundness Tester
The principle of the roundness meter is the same as that of the coordinate measuring machine. In fact, its working principle is very simple. The coordinate measuring machine is a point acquisition tool. Its principle is to collect points first, and then form a line from points, and then form a three-dimensional model from lines. CMM is a kind of measuring equipment that has a guiding mechanism, a length measuring element, a digital display device in three mutually perpendicular directions, and a worktable that can place the workpiece (not necessarily large or huge). The measuring head can be moved to the measured point easily by manual or motorized means, and the coordinate value of the measured point is displayed by the reading device and the digital display device. Obviously, this is the simplest and most primitive measuring machine. With this measuring machine, the coordinate value of any point in the measured volume can be displayed through the reading device and digital display device.
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