The roar of the plane sounded, Qin Shiou stood on the position of a steep coastal wall and looked back, as the sound became louder and louder, the figure of the air tractor appeared from behind the trees.

After the appearance of this plane, two more agricultural planes appeared, which Bill helped him contact, the establishment of a marine ranch is not simpler than a grassland ranch, such a large area of the sea, relying on only one plane, the work efficiency is too slow.

Seeding seaweed has officially begun, but now it is not the seaweed species that the plane is spraying.

Although every time I buy seaweed, I use 'seeds' to measure and call it, in fact, this is not a seed in the traditional sense, seaweed does not produce seeds, but relies on dividing spores to reproduce, and the spores with vitality are dropped by airplanes.

Qin Shiou had seen agricultural companies cultivate seaweed spores before, all of which used plexiglass plates or plastic films as the spore attachment base, and after collecting the spores, they were cultivated indoors with the inclined flow water method, and then cultivated to the embryosporophyte and then peeled off, so that they could be sown in the sea.

In his eagerness to produce results, the seaweed seeds he bought this time were not microspores, but micro-maturities that had been cultivated indoors using rope as a substrate, and the young sporophytes had grown to 1 to 2 centimeters.

The agricultural plane flew over, and Qin Shiou Dan held up a transparent umbrella and blocked it diagonally in front of him. A group of fishermen shouted and looked for something to block them, and those who couldn't find something turned their backs to the sea.

As soon as the plane reached the surface of the sea, the inlet opened, and a white curtain appeared, and a wafting white powder with thick smoke sprinkled down, which became even more turbid when it fell into the water.

These things are lime, so they have to dodge.

The first batch of seaweed to be stocked is giant algae. The sporophyte of this thing is very delicate and tasty, and it is one of the favorite foods of sea urchins, starfish, and all kinds of benthic shellfish.

Lime is put for two purposes. One is to change the pH of seawater and inhibit the activity of these edible macroalgae organisms in the sea; The second is to play a sterilizing role. There is no living water in this inner bay, and the metabolic rate of seawater in it is too slow, and the fish, shrimp, and seaweed are not taken away after they die and rot, and a large number of bacteria are stored in these places.

Seaweeds are experts in seawater purification, but their sporophytes are very sensitive, why is it that the conditions in this bay are very suitable for seaweed, but there is not much seaweed growing on the seabed? The reason is that there are so many bacteria that many sporophytes can't survive.

The spores of giant algae are highly hardy. So you can put it casually in winter and spring. This is the best time to stock the giant algae spores, and the fastest time of day is in the summer, when their need for sunlight and nutrients is at its peak, and the summer weather is just right to meet their growth needs.

Three planes made two round-trips, and the lime powder dropped covered an area of about 100 square kilometers, which is the deepest part of the sea, and beyond the continental shelf, macroalgae can grow at depths of several hundred meters.

Lime powder was placed. The next step is to put the cultivated sporophytes, of course, this is not just a matter of sprinkling them like scattering seeds on land.

Macroalgae are somewhat like plants like loofahs, grapes, and the like. They need to cling to something in order to grow faster, if they are floating in the ocean. After a few big waves, I don't know where to drift......

The agricultural planes dropped off the rafts, which are triangular and umbrella-shaped culture rafts made of plastic racks and ropes. It contains a fast-growing substrate for giant algae sporophytes, which can provide the sporophytes with the energy they need for initial growth. It can also be a climbing object for mature macroalgae.

In China, the submersible rope method is adopted, that is, the plastic rope is used as the substrate attached to the macroalgae larvae, and the two ends of the rope are fixed to the seabed, so that the rope is kept at a certain distance from the seabed. This method is simple and can adjust the cultivation of the water layer according to the size of the transparency.

Because macroalgae can be used to refine algin, make colorful plastics, fiberboards, and can also be used as raw materials for the pharmaceutical industry, so in today's poor fishery farming environment, Canada, the United States and Mexico have emerged a new marine economic model of macroalgae farming.

China has done a good job in this regard, with marine scientists successfully introducing macroalgae from Mexico as early as 1978, and many farms along the southern coast have been cultivating macroalgae for years with considerable profits.

Qin Shiou has read the data that China has developed a very good macroalgae aquaculture industry, and domestic oceanographers have developed a set of macroalgae submersible raft culture technology.

In this technique, the raft is used to sink the floating raft to the water for the cultivation of macroalgae by means of a rope connecting the raft and the raft, and this technology is now used by some farms in Canada and the United States.

But he can't use this technique, although it is very good, because the giant algae are more sensitive to light, and the sunlight varies from day to day, so that by constantly expanding and retracting the rafts, they can always be in the best water layer for farming, the best to absorb sunlight, and grow faster.

This technique requires a large number of workers, and the Daqin Fishery cannot employ so many workers to adjust the position of the raft, and he is not a professional seaweed farm, and he will still raise fish after the environment of this fishery improves.

After the kelp has survived in an area, it can be transformed into an undersea forest, which can shade the entire 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 raft he buys usually sinks 3 to 7 meters below the water after falling into the water, and in early spring, this water layer is more suitable for sunlight intake.

After a while, as the giant algae grows, they will need more and more sunlight, at this time, there is no need to manually control, the leaves of the giant algae have air sacs, and when they grow up, they will pull the raft and slowly float up, adjusting the water layer to grow.

One by one, the submarines were put down, Qin Shiou waved his hand, and the fishermen shouted to get on the harvest, and then drove towards the sea, they were going to work.

The next thing to do is to provide a climbing frame for the algae, as mentioned earlier, the leaves of the algae will float on the surface of the water to draw sunlight when they mature, but the buoyancy is limited after all, so 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 the giant algae, which will be collected to make fish feed in the future, and it is convenient to collect them when there is a landing point.

Qin Shiou has never done this work, in the past, he stocked macroalgae in the Daqin fishing grounds, and there was no need to provide climbing frames at all, anyway, those seaweeds did not need to be collected, they could grow slowly and survive at will.

The purpose is different, not in the No. 2 fishing ground, the giant algae has become an economic product, and it has to be used to mature them in the shortest possible time. (To be continued......)