What should I do if the sweet potato is planted without germination?

When cultivating sweet potatoes, sweet potatoes are generally stored directly until long vines germinate in spring, and then the vines are cut into sections and cut into soil to grow. The propagation is mainly in hotbeds or cold beds covered with plastic films.

Possible reasons for not sprouting or sprouting less: 1. Improper preservation. The traditional way of raising seedlings is to harvest in autumn and raise seedlings in spring, so that the previous sweet potato may have storage problems, and if it continues to be used, it will naturally germinate badly.

The second is the variety difference. Some varieties have thick skin, few buds when planted in spring, and their distribution is unreasonable. Some potato chips have more buds on the top and almost no buds on the bottom, so the buds on the bottom can't germinate normally, so there will be no germination.

The third is the temperature problem. Potato seed seedlings generally need high temperature to germinate smoothly. If the temperature is not enough, it will cause slow germination or no germination. Seed potatoes need to germinate smoothly at 25-38 degrees, and it is difficult to germinate if the temperature is too low or too high.

The fourth is the problem of light nutrients. Attention should also be paid to light when raising seedlings, and insufficient air permeability or sunshine is also one of the main reasons for not sprouting. Sufficient nutrients and water are needed in the process of seedling raising, and insufficient water may cause the seed potato to dry and lose water and fail to germinate. However, there is not enough fertilizer in the soil for seedling raising, and the seed potato can not absorb nutrients, which will lead to slow seedling emergence.

In this case, as far as possible, we should change a variety of seedling methods, or change a seedling method, preferably using potato root seedling method or solar seedling method, so as to improve the quality and speed of germination.

Therefore, it is best to control the temperature of seed potato emergence at about 26-28 degrees, and harden the seedlings after half a month of emergence, and control the temperature at about 18-20 degrees.