Plants acquire nutrients and moisture through the exchange of matter between the roots and the soil. Therefore, the growth state of the root system has a great influence on the plants. Studying the root morphology is of great significance for agricultural development. However, the root system belongs to the “hidden half of the plant†and it is difficult to conduct research on it. With the development of science and technology, the root analyzer has been applied to the study of plant roots. The researchers use it to carry out the work. Root research has become easier and more efficient.
Traditional root research uses digging method, soil drilling method, soil column method, container method, section method, etc. These methods have a common feature, that is, destructive, large workload, such as excavation method, the method First of all, we need to excavate the root system by means of whole excavation and bi-directional slicing, and then conduct an overall or partial study on the cotton root system. The advantages are simple and easy to operate. The disadvantage is that the workload is large and the root system cannot be continuously observed. The earth-drilling method uses human or mechanical force to drive the root drill to remove the same volume of soil-containing soil column from the soil. Although sampling is rapid, it is suitable for large-scale test and has little effect on other plants in the treatment, but the disadvantage is that When the non-uniform distribution of the root system is studied, the error of the sampling point will bring a large error to the whole test result. These methods need to be manually measured during the subsequent root analysis, which is very inconvenient.
However, if a root analyzer is used, the process of sampling and washing roots is also required. However, in the process of root analysis, the drawbacks of manual measurement can be eliminated and manual errors can be avoided. In addition, image capture and analysis software can be used for processing. In a very short period of time, important information such as total root length, average root diameter, total root area, total root volume, root tip count, etc. is obtained, which saves a lot of time for the root analysis process and also reduces the workload for researchers. It is also easier and more efficient when conducting root research.
A Starter Solenoid (OR STARTER RELAY) IS THE PART OF AN AUTOMOBILE WHICH SWITCHES A LARGE ELECTRIC CURRENT TO THE Starter Motor, IN RESPONSE TO A SMALL CONTROL CURRENT, AND WHICH IN TURN SETS THE ENGINE IN MOTION. ITS FUNCTION IS THUS IDENTICAL TO THAT OF A TRANSISTOR, BUT USING AN ELECTROMAGNETIC SOLENOID RATHER THAN SEMICONDUCTOR TO PERFORM THE SWITCHING. IN MANY VEHICLES THE SOLENOID ALSO ENGAGES THE STARTER PINION WITH THE RING GEAR OF THE ENGINE.
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