Causes and Preventive measures of rigid Cucumber seedlings

When planting cucumbers, many farmers find that the seedlings are short, the leaves are small and thin, they turn yellow, and there are fewer roots after being pulled out. How is this all the same? In fact, this is the week's physiological disease of cucumber-stiff seedlings. So what is the cause of cucumber stiff seedlings? How to prevent it? Come and have a look with the editor.

First, the cause of stiff seedling

1. Soil drinking water

The soil is too wet and the permeability is poor, which will affect the respiration of the underground part of the seedling and the occurrence of new roots, resulting in the inhibition of seedling growth; in addition, if the soil is too dry and the combination of seedling and soil is not good after transplanting, new roots will not occur. When the root ground temperature is lower than 10 degrees, the new roots will underdevelop, and when the root temperature is lower than 13-14 degrees, the root hairs on the lateral roots can not develop, and the absorptive capacity is very low. In addition, when the pH value is lower than 4.5 or higher than 8, the root growth and development will also be hindered. In addition, soil salinization can also cause physiological obstacles of seedlings, which can inhibit the absorption of nutrients by roots and cause stiff seedlings.

2. Unreasonable fertilization

If the fertilization is too deep, the root system can not be absorbed in time, but the fertilization is too shallow and can not be fully mature, and it is very easy to cause root damage and form rigid seedlings. In the base fertilizer, without full ripening, organic fertilizer will release a lot of heat and harmful gases in the process of ripening, resulting in root damage. In the process of cultivation, a large number of chemical fertilizers and organic fertilizers were applied to sow seeds, resulting in the lack of soil nutrients and the formation of element-deficient rigid seedlings.

3. The seedling quality is poor.

The seedling age is too old or too small when transplanting, and the root injury in the transplanting process and other reasons may cause rigid seedlings. Excessive refining of seedlings before planting will lead to excessive aging of stems and leaves, and will form rigid seedlings without growing for a long time after planting together.

4. Improper transplanting time

The key to cultivating strong seedlings when transplanting at the right time, if the seedlings can not be transplanted in time, then the phenomenon of rigid seedlings will occur if the heat preservation and moisture preservation of seedlings and the initial protection of transplanting are not done properly. In the process of transplanting, cold injury or continuous high temperature will also affect the normal growth and development of seedlings, and rigid seedlings will also appear.

II. Preventive measures

The key to the cultivation of seedlings with developed roots is to cultivate strong seedlings and control rigid seedlings, which can be started with improving soil mitigation, strengthening nutrient and water management and temperature control, as well as moderate seedling refining and timely transplanting. Excellent prevention of cucumber seedlings.

The above is the introduction of the causes and preventive measures of cucumber seedlings. I hope I can help you. If you want to know more about it, please follow us.