Regarding the problem of greenhouse technology, how to solve the problem of high humidity in greenho

1. Temperature, growth environment (few pests and diseases, isolation of rainwater), etc

2. Choose the cover shed for insulation in winter and the shade net for cooling in summer.

3. The main thing in the greenhouse is that personnel management is in place, and this is a big problem, mainly about temperature and humidity.

4. The greenhouse is made of galvanized steel pipes and polyethylene film or polyvinyl chloride film.

5. The planting method is the same as the outside, but the greenhouse is generally covered with plastic film.

1. Heating and humidity reduction: This method can not only meet the needs of vegetables for temperature, but also reduce the relative humidity of the air. When the plant grows to be resistant, the watering and closing the shed temperature rises for about 30 hours for one hour, and then the ventilation and moisture removal hours can be repeated when the shed moisture is lower than 25.

2. Regular ventilation: The humidity in the greenhouse is mainly caused by its sealing, so proper ventilation is a good way to reduce humidity. However, ventilation is not always possible, and it must be done when the outdoor temperature is relatively high, otherwise the indoor temperature will drop.

If the temperature drops too quickly during ventilation, close the vent in time to prevent the sudden drop in temperature from harming the crop.

In fact, the disadvantages of greenhouse planting, another friend has already described several items, but the lack of soil parts, and! The greenhouse does not necessarily have air conditioning. If it is presented as a column, it is as follows:

1. The greenhouse air temperature is higher than the normal temperature, which is easy to cause high temperature defects in crops. 2. If there is no air conditioning in the greenhouse, the heat dissipation will be slow, which will accelerate the night respiration rate of crops and deteriorate the quality of agricultural products. 3. The cost of greenhouse construction is high.

4. The geographical restriction of greenhouse cultivation is high. 5. There is no natural rainfall in the greenhouse, and long-term cultivation is easy to make the chemical salt base of the fertilizer excessive. 6. The light transmittance of the greenhouse is lower than that of open field cultivation, and the crops are easier to grow.

7. The natural ventilation of the greenhouse is poor, and the disease is rampant in the climate of high temperature and high humidity. 8. The greenhouse shades the rainfall, which is easy to make the surrounding pests move into the habitat and increase the use of pesticides. 9. The cost of electricity is high for air-conditioned greenhouses.

The above projects are all the lack of greenhouse cultivation crops in Taiwan, China, and they are also the experience of the younger brother who has cultivated hectares of greenhouse tomatoes for several years. The above is for your reference. Personal basic theory and practical experience are comprehensive, if you have any other questions, please add questions.

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Reference: Chung Hsing University Graduated from the Department of Agricultural Management, which has entered the history of the future, and was thinking about the economic cultivation of vegetables in the future.

In my opinion.

Grow a variety of flowers and vegetables or seedlings in greenhouses; All in all, the benefits outweigh the disadvantages. Since it comes to the disadvantages.

Of course, the following analysis is required.

What exactly is the extent of the error.

Let's take a look at it: 1) Plants grown in greenhouses.

Due to the presence of air and temperature can be adjusted.

Formation of vigorous growth and rapid disturbance; The result is a softer texture and plenty of moisture. Therefore while eating.

poor taste and texture taste, etc.; For example, tomatoes grown in greenhouses are called water tomatoes.

The flavor is very different from that of field-grown tomatoes; Because the latter has a stronger flavor.

The texture is more tasteful; 2) In the greenhouse due to the limited space.

Therefore, it is planted in an intensive and multi-level arrangement; In order to cope with and create a good ecological environment; For air conditioners and heaters.

The requirements for fans and equipment are quite strict; As a result, extreme electricity bills are expensive; But the plants that are planted in the wilderness take a laissez-faire approach.

No electricity charges are charged; 3) Building a greenhouse is not an easy task.

In addition to finding the right place; There is also not being affected by other buildings, causing the sunlight to be blocked. Besides, it still requires Sun Hui to have considerable funds, materials and equipment to successfully build.

So it's worth a lot; In contrast to wilderness planting, there is no need to use this payment.

Hello dear <>

The greenhouse effect has an important impact on the production of agricultural industry. First of all, the greenhouse effect causes temperatures to rise, which will affect the growth of crops. Due to the rising temperatures, the growth cycle of crops may become shorter, and too high temperatures can affect the growth of crops, which can affect crop yields.

Secondly, the greenhouse effect causes climate change, which will affect the growth of crops. Climate change can lead to changes in rainfall, which can affect the growth of crops. In addition, climate change can also lead to the occurrence of plant diseases, which can affect crop yields.

Finally, the greenhouse effect causes air pollution, which will affect the growth of crops. Air pollution can cause crops to be contaminated with pollutants, which can affect the growth and yield of crops. In conclusion, the greenhouse effect will have an important impact on agricultural production, so effective measures should be taken to mitigate the greenhouse effect and protect agricultural production.

Greenhouse cultivation has the following advantages over open air cultivation, so it can reduce the following problems:1Reducing the risk of natural disasters:

The greenhouse environment is more stable, which can effectively prevent natural disasters such as heavy rain and hail from damaging crops. 2.Reduction of pests and diseases:

Greenhouse cultivation can effectively control environmental conditions such as temperature and humidity, and reduce the incidence of pests and diseases. 3.Extended planting season:

Greenhouses provide a suitable growing environment, allowing plants to grow in seasons or environments where they cannot grow in the open air, prolonging the planting season. 4.Increase yield and quality

Greenhouse cultivation can provide a more stable environment, make crops grow healthier and stronger, and help control light, moisture, nutrients and other factors, thereby improving yield and quality. 5.Conserve water and fertilizers

The circulation system in the greenhouse makes efficient use of water and fertiliser, reduces waste, and conserves water and fertilizer. Therefore, greenhouse cultivation can effectively reduce the invasion of natural disasters, pests and diseases, prolong the planting season, improve yield and quality, and save water and fertilizers.