The advantage of the plastic centrifuge tube is that it is transparent or translucent, its hardness is small, and the gradient can be taken out by the puncture method. The disadvantage is that it is easy to deform, has poor corrosion resistance to organic solvents, and has a short service life.
Plastic Centrifuge Tubes have caps, which are used to prevent sample leakage, especially when used for radioactive or highly corrosive samples. It is very important to prevent sample leakage; the tube cap also has a function to prevent sample volatilization. And support the centrifuge tube to prevent deformation of the centrifuge tube. When choosing this point, you should also pay attention to check whether the tube cover is tight, and whether it can be tightly covered during the test, so as to achieve the inversion without leakage;
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Root-feeding fertilizers are used to improve root activity. In the low-temperature season, alginic acid, chitin and humic acid fertilizers should be applied to promote the growth of capillary roots. To minimize the application of compound fertilizer, you can use a fully water-soluble fertilizer instead of compound fertilizer.
The amount of fertilizer used for control is based on the application of the base fertilizer. Generally, no fertilization is required before flowering and pod-forming. The first inflorescence is properly fertilized after sitting, and no longer apply a lot of fertilizer after entering the pod stage. Late fertilization should be carried out in small amounts, which is beneficial to root absorption.
Bean vegetable fertilizer management
When watering and watering properly, it should be poured with small water, and it should not be flooded with large water. The seedling period strictly controls the amount of watering, and after pouring the bottom water and the slow seedling water, there is no watering or less watering. At this time, the soil moisture content will affect the flowering and pod formation. After the first inflorescence, the watering amount is increased to promote the growth of the pod. After entering the pod period, reduce watering to prevent falling flowers.
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