When cultivating crops in winter, there are often problems such as abnormal growth of crop seedlings. This is a headache for the majority of farmers. How to deal with it? Greenhouses are not planted in open fields, and their environmental conditions are special, so they must be scientific and effective. Management, how to do it? Let's take a look at it.

Winter shed seedlings should pay attention to five problems

1, beware of skin unearthed

In order to prevent the soil from being unearthed, the soil should be evenly covered during sowing to ensure proper soil temperature after sowing. In addition, when the seedlings are just unearthed, if the bed soil is too dry, a small amount of water can be sprayed to keep the soil moist, if it is found that the soil is too thin The place can be sprinkled with a layer of moist fine soil. If the seedlings are found to have soils, they can be sprayed with some water to soften the seed coats and then manually remove the seed coats.

2, reduce rotten seedlings

If there is rotten seedlings, it has a great relationship with the quality of the seeds. If the seeds are immature, the plants will be mildewed, and the seeds will be burned during soaking. These will cause problems such as rotten seeds. In addition, low temperature and high humidity after sowing, application of unfertilized Organic fertilizers and seeds are unearthed for too long. If they are chronically deprived of oxygen, they will also lead to rotten species. For these situations, we should control the nursery environment and reduce the rotten seedlings.

3, avoid roots

The root of the alfalfa is mainly due to the long-term soil temperature of the seedbed below 12 °C, combined with excessive watering or cloudy days, the lack of light, resulting in seedling roots in low temperature, over-humidity, hypoxia, dysplasia, causing roots. The soil temperature should be raised (the soil temperature should be kept above 16 °C as much as possible), and the bottom water should be used once at the time of sowing. The water should be properly controlled during the emergence process to prevent the bed surface from being too wet.

4, control of the length

If the seedlings are long or thin, on the one hand, their resistance is poor. On the other hand, the seedlings are slow to slow down, it is not easy to prematurely and high-yield, and if the light, night temperature, moisture, nitrogen fertilizer are not in place, it is easy to cause seedlings. Apprentice, at this time, we can use the light or control the temperature difference between day and night to carry out measures such as seedling hydration.

5, anti-aging seedlings

The biggest problem with aging seedlings is that they are not willing to grow, or they are slow to grow, prone to premature aging, and have short flowering periods. If the seedlings are aging, the cause may be insufficient water, or the temperature is too low, or the hormone is not properly treated. Therefore, in order to prevent the aging of the seedlings, we must guard against low temperature, proper amount of water, and scientific use of hormones.

The above are some of the methods introduced in Xiaobian to prevent abnormal cultivation of greenhouses. The above-mentioned introductions are all problems that often occur during the cultivation process. Therefore, everyone should pay attention to it and do a good job of management measures.

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