Management techniques of Purple Potato at Seedling stage

Purple potato and sweet potato are actually similar plants, and they are also very popular food crops. There is a very wide planting area in our country. When planting purple potato, we should adjust the management methods according to the growth period of purple potato. Among them, the management at the seedling stage is very important, so how to manage the purple potato at the seedling stage? Today, the editor brings you the management technology of purple potato seedling stage. Let's have a look!

1. Temperature control

In the purple potato seedling stage, temperature control is very important, the temperature in the film should be kept at about 28 degrees. However, at noon on a sunny day, because the temperature will be higher, we must pay close attention to the temperature changes in the film. Because if the temperature is too high at this time, it may lead to burning seedlings. We should adjust the temperature reasonably according to the changes of the weather and take measures such as cooling and increasing temperature in time. In the seedling period, high temperature should be used to promote budding in the early stage, stable temperature in the middle stage to promote the growth of seedlings, and low temperature in the later stage.

It is mainly before the potato buds are unearthed, in order to raise seedlings in the early stage, at this time we should mainly promote the germination. The temperature in the film can be increased appropriately, but not higher than 35 degrees, under normal circumstances can not be ventilated. Then 10 days before the seedling is collected, in order to raise the seedling in the middle stage, the temperature should be lowered appropriately at this time, keep it at about 25-30 degrees, and do a good job of temperature regulation. Then, a week before transplanting to the field, the temperature should be reduced to the atmospheric temperature, not heated, and the film should be properly opened for low-temperature seedling refining. Enhance the adaptability of sweet potato seedlings to the environment and improve the growth ability of sweet potato seedlings.

2. Rational watering

Before the sweet potato seedlings are unearthed, they should not be watered too much or even without watering. Avoid affecting seed germination, but after the seedlings, pay attention to a thoroughly watered, and after the seedlings should be watered in time. Then it should not be watered in the seedling refining stage and before collecting seedlings, and there should be no shortage of water in the period of high temperature. When refining seedlings at low temperature, keep the soil dry and wet, upper dry and lower wet. If the soil is too dry and needs watering, it should be done in the morning in the low temperature environment and in the morning and evening in the case of high temperature.

3. Topdressing in time

When watering sweet potato seedlings, it can be combined with topdressing. The fertilizer of topdressing is mainly nitrogen fertilizer, such as urea and so on. When applying fertilizer, we must pay attention to control the amount and concentration of fertilizer, and the concentration must not be too high. Based on the principle of more and less application, do not sprinkle and wet directly to avoid burning seedlings caused by excessive heat of fertilizer. Finally, when the seedlings of purple potato grow to about the height of 25cm, the seedlings are collected and transplanted into the field. If the time of collecting seedlings is too late, the growth space of purple potato seedlings is too crowded. It will affect the growth of the lower seedlings and reduce the yield.

The above is a brief introduction to the management technology of purple potato at seedling stage. That's all for today's introduction. This article is for reference only. I hope it can help you all.