How to prevent cucumber from appearing
Cucumber bent melon is also called malformed melon, which is a physiological disease. The reasons for causing cucumbers to bend melons are as follows:
First, excessive leaf picking is easy to cause cucumber bending; second, too many single plants in the early stage; third, small flowers in the ovary when flowering, long quality is not good, even if flowering, the nutrients obtained later are less, easy It causes the curved melon; the fourth is the normal long-fruited melon strip, which takes a certain time when the fruit is inflated. If the condition is slightly bad, it will form a curved melon. Therefore, it is very important to use fertilizer in the later stage. Fifth, the initial growth of the results is normal melon, if the nutrients can not be supplied in time, will soon form a curved melon; sixth is the long fruit cucumber formed, when encountered in the expansion of the leaves encountered obstacles, will also form curved melon; It is caused by potassium deficiency and boron deficiency caused by high temperature. Generally, the daytime temperature should not exceed 32 degrees, and the daytime should be controlled between 25-30 degrees. Eight is sometimes too much or a single use of nitrogen fertilizer or chicken manure, pig cow dung, potassium fertilizer, phosphate fertilizer is insufficient, and cucumber cucumber is also prone to occur. Or other malformations.
Prevention and treatment methods: First, do not prematurely remove too much of the bottom leaves. The yield of cucumber depends mainly on the photosynthesis of the leaves to increase the yield. As long as the bottom leaves do not yellow, generally do not remove them too early, unless the bottom leaves are functionally prematurely aging, they can be removed.
In order to prevent premature senescence of cucumber leaves, it is necessary to use NPK and microbial fertilizers as well as multi-element mineral fertilizers and organic fertilizers in fertilization. In the early stage, organic fertilizers and NPK fertilizers have been used in the base fertilizer, and now it can be used per mu. 20 kg of microbial agents and 20-30 kg of multi-element mineral fertilizer were applied to promote the growth of cucumber roots, supplement nutrients, and prevent cucumber roots and premature senescence of leaves.
The second is: watering should be diligent, but the amount of watering should be less. The interval between watering in the high temperature period should not be too long. Do not exceed 32 degrees during the day. Generally, the daytime control is between 25-30 degrees;
The third is: the yield per plant cannot be too high, and the excessive yield per plant will increase the burden on the plant. In the early stage, if the melon is too much or the melon is not picked up, the leaves will age quickly and the bent melon will be formed easily.
The fourth is: timely removal of the bent bones that have occurred, you can also use the small stones to climb the bottom to make it straight; the other leaves can spray 200 times liquid compound microbial fertilizer or Shuofeng 481, spray once every 7 days 2-3 times, it has good control effect on the prevention and treatment of curved melon, sharp melon and big belly melon.
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Roundness Measuring Instrument
A roundness meter is a measuring tool that uses the rotation axis method to measure the roundness error of a workpiece. The roundness tester is divided into two types: sensor rotary and workbench rotary. During measurement, the measured part is installed concentric with the precision shaft system, and the precision shaft is equipped with an inductive length sensor or workbench for precise circular motion. The roundness meter consists of an instrument's sensor, amplifier, filter, and output device. If the instrument is equipped with a computer, the computer is also included in this system.
A roundness meter is a precision instrument used to measure the out of roundness of a rotating surface (shaft, hole, or spherical surface) of a component. There are usually two types: small desktop, where the workpiece is mounted on a rotating workbench and the measuring head is mounted on a fixed column; Large floor mounted, with the workpiece installed on a fixed workbench and the measuring head installed on the rotating spindle. During measurement, the measuring head contacts the surface of the workpiece, and the rotating part of the instrument (workbench or spindle) rotates for one cycle. Due to the extremely high accuracy of the supporting bearings in the rotating part, the measuring head will generate a high-precision circular trajectory on the measured surface during rotation. The out of roundness of the measured surface causes the measuring head to shift and transform into an electrical (or pneumatic) signal. After amplification, it can be automatically recorded on a circular recording paper, and the out of roundness of each part can be directly read out for accuracy evaluation and process analysis. Widely used in precision bearings, machine tools, and instrument manufacturing industries.
The roundness meter adopts a radius measurement method and operates in a rotating manner. The rotation axis system of the roundness meter adopts a high-precision air floating spindle as the measurement reference; The electrical part of the roundness tester is composed of advanced computers, precision circular grating sensors, and precision inductance displacement sensors. The circular grating sensors and precision inductance displacement sensors measure angle and radial displacement, ensuring the accuracy of measuring the angular displacement and radial value of the workpiece; The roundness meter measurement software adopts a roundness measurement software based on the Chinese version of WinXP operating system platform, completing data collection, processing, and measurement data management.
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