What should I do if the temperature is low and the seedlings are slow when the seedlings are raised

Add a stove or turn on the heating in the greenhouse to increase the temperature to make the seedlings develop, but pay attention to prevent flower gas poisoning when using fire for heating, install a chimney outside the greenhouse to output gas, and be careful not to light the firewood in the greenhouse to heat up, because the smoke emitted by burning firewood is extremely harmful to crops.

The temperature is low and the seedlings are slow, and the greenhouse can be built to improve, because the seedling temperature in the greenhouse is very suitable for the seedlings.

Clause. 1. Clean the shed film and increase sunlight.

Remove the dust, dirt and snow on the greenhouse film in time, increase the sunshine in the greenhouse as much as possible, and increase the greenhouse temperature;

Clause. 2. Spray foliar fertilizer.

In winter, the temperature is low, the light in the greenhouse is weak, and the absorption capacity of crop roots decreases, so potassium dihydrogen phosphate can be sprayed on the foliar surface, which can increase the sugar content and hardness of the mesophyll, improve the cold resistance of the plant, and alleviate the degree of frost damage. Or use rice vinegar mixed with sugar and superphosphate, prepare 100-300 times of liquid, and spray it on the leaf surface;

Summary. 1. Soaking and germination.

1. Soak the seeds before germination.

The water temperature required for soaking vegetable seeds at room temperature is 25, and there is no need to warm them in summer. In winter, the temperature is relatively low, so you need to configure the water to a suitable temperature first, and then put the seeds in a relatively high temperature room for soaking to prevent the water temperature from dropping too quickly.

After soaking the seeds, wrap them in a damp cotton cloth for germination, and rinse the seeds and clean the cotton cloth frequently during the germination process to prevent the seeds from becoming moldy and maintain the appropriate humidity during the seed germination process.

2. There are about these 3 ways and methods for seed germination in winter.

Incubator: If it is a large-area seedling, it is necessary to purchase a small incubator, and set different temperatures for germination according to the different temperature requirements for vegetable seed germination.

Use heating: It is also a good way to put it on the radiator of an old-fashioned radiator, but be careful not to exceed 30 °C. If the temperature of the radiator is too high, place the seeds near it.

If you don't have the above-mentioned device, you can put the soaked seeds in a cupboard under the gas stove, where the temperature is relatively high and they can germinate quickly.

We have solar greenhouses where the seeds are placed for germination.

What to do if the seedling temperature is low in winter.

1. Soaking and germination 1. Before germination, vegetable seeds should be soaked at room temperature, and the water temperature required for soaking seeds at room temperature is 25, and there is no need to heat it in summer. In winter, the temperature is relatively low, so you need to configure the water to a suitable temperature first, and then put the seeds in a relatively high temperature room for soaking to prevent the water temperature from dropping too quickly. After soaking the seeds, wrap them in a damp cotton cloth for germination, and rinse the seeds and clean the cotton cloth frequently during the germination process to prevent the seeds from becoming moldy and maintain the appropriate humidity during the seed germination process.

2. Winter seed germination, there are probably these three ways and methods incubator: if it is a large-area seedling, it is necessary to purchase a small incubator, according to the different temperature requirements for vegetable seed germination, set different temperatures for germination. Take advantage of the heating:

It is also a good way to promote germination on the radiators of old-fashioned radiators, but be careful not to exceed 30 °C. If the temperature of the radiator is too high, place the seeds near it. If you don't have the above-mentioned device, you can put the soaked seeds in a cupboard under the gas stove, where the temperature is relatively high and they can germinate quickly.

We have solar greenhouses where the seeds are placed for germination.

Oh, some of the sweet corn I raised for 7 days has just been unearthed, and some have not yet come out, is there a solution?

In addition, the temperature is too low in the past few days, and I don't know how the seedlings are in the future, which is really urgent.

1. If the aboveground part is yellow, and the corn seedlings are found to have no root hairs and show pesticide damage, spray plant growth regulators containing trace elements, and most of the yellow corn seedlings can turn green after three days.

2. Severe lack of seedlings, quickly dig out the seeds to check the cause, put the leaves in the ground and the arch is not unearthed or the buds die, most of them are attributed to the drug damage, and they should be replanted.

In the selection of corn species, it is necessary to select varieties with strong bud strength and strong stress resistance. Especially for new species, there is little understanding of their stress resistance, so it is necessary to choose carefully.