Chapter 1526

The roar of the plane rang out. Qin Shiou stood on a steep coastal wall and looked back. As the sound became louder and louder, the figure of the aerial tractor emerged from behind the woods.

After the aircraft appeared, two more agricultural aircraft appeared, which Bill helped him contact. The establishment of marine ranch is no simpler than grassland ranch. In such a large area of sea, relying on one aircraft alone is too slow.

Planting seaweed has officially started, but now the aircraft is not spraying seaweed seeds.

Although algae are measured and called "seeds" every time they buy algae, in fact, this is not a seed in the traditional sense. Algae do not produce seeds, but breed by dividing spores. What the aircraft puts in is spores with vitality.

Qin Shiou has seen agricultural companies cultivate algae spores before. They all use plexiglass plate or plastic film as spore attachment medium. After collecting spores, they are cultivated indoors by inclined plane running water method, cultured to embryonic spores, and then stripped. At this time, they can go to the sea for sowing.

Eager to achieve results, the seaweed seeds he bought this time were not microspores, but micro mature bodies cultivated in the farm. This kind of algae was cultured indoors with rope as the substrate. After cultivation, the young spores grew to 1-2 cm.

The agricultural plane flew over. Qin Shiou egg set up a transparent umbrella and leaned in front of him. A group of fishermen yelled to find something to block themselves. If they couldn't find anything, they turned their back to the sea.

After the plane flew to the sea, the release port opened, and a white curtain appeared immediately. The floating white powder with thick smoke fell down, and the sea became more turbid after falling into the water.

These things are lime, so they have to avoid.

The first batch of seaweed to be put in is giant algae. The spore body of this thing is very delicate and delicious. It is one of the favorite foods of sea urchins, starfish and all kinds of benthic shellfish.

Lime has two purposes: one is to change the pH of seawater and inhibit the activity of these organisms that eat giant algae in the sea; Second, it plays a bactericidal role. There is no living water in the inner bay. The metabolic rate of seawater in the inner bay is too slow. Fish, shrimp and seaweed can not be taken away after they die and decay. They accumulate in these places to feed a large number of bacteria.

Seaweed are experts in sea water purification, but their spores are very sensitive. Why is this bay obviously suitable for seaweed growth, but there is not much seaweed on the seabed? The reason is that there are so many bacteria that many spores can't survive.

The spores of giant algae have strong cold resistance, so they can be put in freely in winter and spring. Now this season is the best time to put giant algal spores. According to time, their fastest growth happens to be in summer. At that time, their needs for sunshine and nutrients reach the peak, and the weather in summer can meet their growth needs.

The three planes went back and forth twice, and the lime powder covered a sea area of about hundreds of square kilometers. This sea area is the deepest place. Beyond the continental shelf, giant algae can grow in the sea area with a water depth of hundreds of meters.

After adding lime powder, we should put in the cultivated spores. Of course, this is not just like sowing seeds on land.

To some extent, giant algae are like plants such as loofah and grapes. They need to cling to something to grow faster. If they float in the sea, they probably don't know where to go when a few big waves come down

What the agricultural aircraft put down is a piece of submerged raft, which is a triangular and umbrella shaped breeding raft composed of plastic frame and plastic rope. There is an attachment matrix for the rapid growth of giant algae spores, which can provide the energy required for the initial growth of the spores, and can also become an attachment of mature giant algae.

China adopts the submerged rope method, that is, the plastic pipe rope is used as the matrix, attached with giant algae and young algae, and the two ends of the pipe rope are fixed on the seabed to keep a certain distance from the seabed. This method is simple and can adjust the water layer according to the transparency.

Because giant algae can be used to refine alginate, make colorful plastics and fiberboard, and also be used as raw materials for the pharmaceutical industry, under the bad environment of fishery and aquaculture, Canada, the United States and Mexico have sprung up a new marine economic model of giant algae aquaculture.

China has done a good job in this regard. Seafood scientists successfully introduced giant algae from Mexico as early as 1978. Many farms in the southern coastal areas have cultivated giant algae in recent years, and the income is considerable.

Qin Shiou has read the data. China has developed very well in the giant algae breeding industry. Domestic oceanographers have developed a set of giant algae submerged raft breeding technology.

In this technology, the breeding raft sinks the floating raft to the water through the rope connected with the raft pipe for giant algae breeding. Now this technology is used in some farms in Canada and the United States.

But he can't use this technology. Although this technology is very good, because giant algae are sensitive to light, and the illumination of sunlight is different every day. In this way, by regularly stretching and stretching the rope to control the submerged raft, they can always be in the best water layer for breeding, absorb sunlight and grow faster.

This technology requires a large number of workers. Daqin fishery cannot hire so many workers to adjust the position of submerged rafts. Moreover, he is not a professional seaweed farm. After the environment of the fishery is improved, he will still raise fish.

After the successful survival of giant algae in a sea area, it can be changed into a submarine forest, cover the whole sea area, and create a natural high-quality fishing ground, which is very attractive to some precious seafood, such as tuna, sea cucumber, abalone, etc.

The submersible raft he bought usually sinks 3 to 7 meters underwater after falling into the water. In early spring, the solar intake of this water layer is more appropriate.

After a period of time, with the growth of giant algae, they need more and more sunlight. At this time, there is no manual control. There are air bags in the leaves of giant algae. When they grow up, they will slowly float up with a submerged raft and adjust their water layer to grow.

One by one, the diving rafts were put down. Qin Shiou waved. The fishermen shouted to get on the harvest, and then drove to the sea. They were going to work.

The next thing to do is to provide climbing frames for the giant algae. As mentioned earlier, when the giant algae mature, the leaves will float on the water to absorb the sun, but the buoyancy is limited after all. It is better to provide a climbing frame.

In addition, the climbing frame has a more important role, that is to collect the landing points of giant algae. In the future, these giant algae should be collected to make fish feed. It is convenient to collect them with landing points.

Qin Shiou didn't do this job. In the past, he used to raise giant algae in Daqin fishing ground without providing climbing frames. Anyway, those algae don't need to be collected. They can grow slowly and survive at will.

The purpose is different. It doesn't work in No. 2 fishing ground. Giant algae have become an economic product. It takes the shortest time to make them mature.