In the previous rice planting, people basically did not know the method of film cover film breeding, but since the 1990s, China's agriculture has entered a period of rapid development, and the plastic film breeding method has begun to be rapidly promoted. This method has been used until now. Next, let's take a look at the technical points of the cover film breeding.
The film cover seedling raising technology is used for early rice breeding, which can prevent rotten cockroaches, and can be planted in advance to advance the field. This allows farmers to have sufficient time to allocate agricultural production to the planting season.
There are only two kinds of materials used in the cover film technology, namely plastic film and bamboo stick. Plastic film is sold in agricultural stores, some places are calculated in meters, and some places are calculated in pounds. Regardless of the method used, farmers will measure the length of Putian before purchasing the film to accurately purchase the film according to the actual amount. As for the bamboo sticks, farmers who have the time to have time usually make their own bamboo sticks, otherwise they can go to the market to buy ready-made bamboo sticks.
The bamboo sticks that make the film support generally have a total length of about 2 meters, and the bamboo sticks have sharp shapes at both ends. When used, it is convenient to insert the bamboo head into the soil to play a firm role. The specific method of making the bracket is to use two bamboo poles to cross-plug the double-frame beam to facilitate the ventilation of the head. The middle section of the raft is generally one meter away from the bamboo pole to make the frame beam.
When farmers are doing cockroaches, in order to facilitate the use of the cover film technology, the requirements for the width of the squat have been changed, and the practice of the width is limited to 1.2---1.5 meters. The width allows for full use of the film and easy film evacuation.
When the rice planting is completed, the film insulation should be covered in Putian (秧地) in time, so how to uncover the film/cover film for heat dissipation and heat preservation is a technical activity. Generally speaking, the time from the cover film to the film collection time is fifteen days, so pay attention to the following points during the film uncovering:
1. On the day of rice planting and the next day, the film cannot be uncovered, so that the sputum forms a small environment with high temperature and high humidity, so that the rice seeds are firmly rooted and tidy.
2. From the third day of rice planting, it is necessary to expose the two membranes of the crucible to heat and dissipate during the day, and to re-cover the membrane insulation at night.
3. When the rice seedlings leave the needles to the second leaf, the film of these days is uncovered in the middle of the day, and the film on the whole section is half uncovered. The film is covered again at night.
4. When the seedling grows to the second leaf to the third leaf, the farmer will choose to peel off the film in a sunny day. At this time, the film is generally uncovered during the day, and the film is covered again at night. The process is 1---2 days. When the seedlings are fully adapted to the temperature of the uncovered film, they can take the film and take the bamboo stick to take it home for reuse next year.
In short, in order to have a good harvest, farmers spend a lot of time and manpower during the planting of rice. I hope everyone can have a good harvest.
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