Lin Gao Qiming

Chapter 374 Dongsha Island

The most problematic is phosphate fertilizer.Several people thought for a long time.The easiest natural phosphorus fertilizer to obtain is animal bones. The Council of Agriculture has been using leftover fish bones and fish dregs from seafood processing factories to fertilize the fields, and occasionally animal bones.But now we need to improve 1500 mu of land, where can we get so many bones?

Applying plant ash can also supplement phosphorus fertilizer, but there is still a problem involved: the amount is not enough.

A group of people pondered for a long time, and finally decided to call Luo Duo.

Luo Duo is now working in the Social Department of the Political Security Agency to collect dirty materials every day, and he is living a fulfilling life, but he still continues to play the role of a living dictionary every day after work.

Wu Nanhai's question is: how to make phosphate fertilizer without phosphate rock?

"This is easy." Luo Duo said, "Boiled plant ash..."

"I know this, and I know about animal bones, but I want to fertilize 1500 acres of land that is severely deficient in phosphorus."

"Ask the metallurgical department for steel slag." Luo Duo said, "I remember they used a small converter, right? It's suitable." He continued: "Steel slag mixed with lime can get a kind of soil phosphate fertilizer."

The slagging process in converter steelmaking is to use sand to produce acidic slag to replace the phosphorus in pig iron.Therefore, converter slag contains a considerable amount of phosphorus.

"Okay." Wu Nanhai hurriedly called the Ministry of Metallurgy.

Ji Wusheng told him that most of the steel slag accumulated after steelmaking has been used as paving materials, and there are only a few tons of stock in the steel factory.

"Several tons are enough." Fa Shilu said, "Let's make do with it first. If it's not enough, add a lot of plant ash, ask the students of the national school to launch a campaign to recycle plant ash, and then add a lot of peat."

"I don't know if the Foreign Business Committee has settled Nanbao's side later?"

The lignite and peat produced by the coal mine in Nanbao are the main source of fertilizer for Lingao in modern time and space.Naturally, the traverser will not let it go.However, Nanbao is already close to Li District, and it is a hilly area. The long-distance exploration team has gone to it several times, thinking that they have invested too much in mining and the distance is far away, which is almost equivalent to opening a base.It is best to let the local people mine and then buy the expropriation model.

But so far, this matter has not been done.The local people are not very interested in mining this kind of black coal, even if the Transit Group is willing to buy it, no one is willing to mine and transport it.

After Wu Nanhai reported the need for lignite as fertilizer to the executive committee, Wu De decided not to delay, and simply collected it by means of compulsory apportionment.So people were sent to call the liaison officers from all the villages near Nanbao, and they were given the task of mining and transporting a few "big catties" of lignite to Bairen in each village-in return, they could use lignite and peat for their grain. to compensate for the discount.

"Thank you so much." Wu Nanhai almost burst into tears of gratitude, "In fact, it would be better to have phosphate rock..."

"I have nowhere to look for it." Wu De said helplessly, "There is no such thing locally."

"Why don't we sail to Yulingang for mining," Wu Nanhai said.He saw in the report that phosphate rock was found near Tiandu.

Ma Qianju shook his head: "The phosphate rock in Yulin is not at the seaside, so it has to go ten kilometers inland. There is no road, no equipment, and it can't be transported back in a month."

"That's it." Wu Nanhai looked disappointed, "Can you think of a way - send a small-scale mining team to mine a dozen tons?"

"This——" Ma Qianju thought for a while, and the Council of Agriculture was not the only one who needed phosphorus. The Ministry of Chemical Industry and the Weapons Group had all proposed to him for phosphorus rock.It will take half a year for everyone to wait patiently for the development of Tiandu.Fortunately, the food issue is not easy to mix up.

"Let me ask the resource department if there is an economical and quick way to use it." Ma Qianju shook the phone on the table:

"Switchboard, I'm the planning committee, I'm connected to office 22."

"The quickest solution is to go to Dongsha Island and collect guano stones." Zhao Xue, their secretary, answered the phone from the remote exploration team. , open-pit mining is also easy. It is enough to transport a boat back.”

"It would be better if there were struvite," Wu Nanhai said.Struvite is not only rich in phosphorus, but also nitrogen and potassium, and is a natural compound fertilizer.Now even potash fertilizers are saved.

"Okay, let's dispatch the navy." Ma Qianju immediately made a decision, "Chen Haiyang, the People's Commissar of the Navy, is invited. Let's plan the ships to be dispatched."

Wu Nanhai was simply flattered. This efficiency, this kind of courage, was much better than the feeling of "discussing, discussing and discussing".

It was decided to set off on the Zhenhai ship to dig the guano rocks—the so-called time waits for no one, and it takes about ten days to send a sailboat, and a hybrid boat is much more convenient.After all, tacking is a technical job, and among the traversing crowd, only the Qian brothers from North America are relatively experienced—they have played small sailboats at least.

The Zhenhai under the command of Lin Chuanqing quickly found Dongsha Island according to the route map.The island is about 2.5 kilometers wide, and the terrain is very flat, without peaks, but there are many coconut trees.A large number of seabirds are constantly circling, taking off and landing over the island.Flying up and down the mast around Zhenhai, leaving some "gifts" for the sailors on the deck from time to time.

"Damn it!" Lin Chuanqing cursed and spat.He had been baptized on his hat, and fishermen were more or less superstitious, and felt unlucky about this thing.

"With so many birds, there must be a lot of struvite," said the enthusiastic Bai Guoshi.

"Let your guano stone go to hell." Lin Chuanqing put on a straw hat for himself, "Why should I take on such a task!"

The route of Dongsha Island, his background as a fisherman, and Lin Chuanqing, who has been a smuggler for many years, knows where it is without a nautical chart, but he has never been close to this place in the past-there is a Taiwanese marine on it. If you have a bad temper, it will be even more off-putting to reward you with a bunch of bullets if you think you are engaged in espionage.

"The water depth is 8.3 meters, and the distance is 3 chains!" The sailor reported loudly.

"Slow down, put down the boat, and measure the water!" Lin Chuanqing ordered.So several sailors put down the boat and rowed to the island.

Bai Guoshi said: "Dongsha Island has a lagoon, can't we just drive the boat into it?"

"It's too shallow." Lin Chuanqing shook his head. Although he didn't go to Dongsha Island, he heard people say that the lagoon of Dongsha Island is very shallow. "When the tide is low, it is less than 1 meter. If you go in, you will run aground."

The entire Dongsha Island is crescent-shaped, covering an area of ​​about one square kilometer, and there is a lagoon in the west of the island.The lagoon is less than 1 meter deep at low tide, and the width at the exit is no more than 20 meters. It has almost no value as an anchorage for coral islands.Because the opening of the lagoon is extremely small, the exchange of water volume is very small, resulting in the long-term accumulation of organic debris at the bottom of the lake; overall, it is similar to the coastal swamp ecosystem, and it is different from the common coral islands with clear water and corals. The lagoon is completely different.Several travelers who originally wanted to enjoy the scenery of the tropical coral island were disappointed.

Under the guidance of the water measuring boat, the ship circled the west side of the island.Dongsha Island is actually the only one in a series of atolls above the water.The diameter of the entire Dongsha Atoll is about 20 kilometers. Ships can sail into this lagoon to berth. However, because of the lack of coral reef dams above the water, the value as a port shelter is limited.

"Shut down! Anchor!" Lin Chuanqing steered the ship as close as possible to the shore of the island, and did not drop anchor until the front keel was almost rubbed against the bottom.

"Assemble the floating bridge!" Lin Chuanqing continued to give orders.

Excavating struvite requires moving heavy objects, and there is no lagoon on Dongsha Island where large ships can berth. It is too inefficient to use small boats to go back and forth. Therefore, Zhenhai has brought a set of floating trestles to be temporarily built between the beach and the boats.

"Is there anyone on the island? Do you want everyone to bring weapons?" Bai Guoshi asked Lin Chuanqing.He put his pistol in a waterproof holster.

"Probably not. Summer is not the fishing season. Fishermen don't come here. But there are a lot of sharks here." Lin Chuanqing raised his horn and shouted: "Everyone be careful, there are a lot of sharks in the sea! Don't fall into the water. You will be injured." Get back on the big boat right now, don't pee in the sea! Don't panic when you see a shark..."

The lagoon of Dongsha Island itself is rich in organic debris at the bottom. When the lake water flows out to the nearby sea area, it will form a feeding incentive, attracting sharks and other creatures that hunt by smell to follow the water flow to the vicinity of the lagoon.So the density of sharks here is particularly high.In addition to sharks, there are many ferocious predatory fish in the lagoon here, and their aggressiveness and lethality cannot be underestimated.

Two more dinghies were lowered, and the sailors unhooked the pontoons from their hulls and began linking them with chains.Lin Chuanqing told the sailors on the ship to be on guard on both sides of the ship with live ammunition.Each dinghy is also equipped with a dedicated shark guard, carrying a harpoon, and wearing chain vambraces and gloves made of thin iron rings on his arms.

Sure enough, there are many sharks in the lagoon, and there are many kinds. In the clear water, you can clearly see these ocean kings swimming happily.Everyone is nervous.When tense, the movements become deformed, and the floating trestle took twice as long as usual to complete.The nearly 100-meter-long pontoon bridge undulates on the sea surface, and shark fins can be seen protruding from the water around it from time to time. The faces of the first batch of people who landed on the pontoon bridge turned pale.Several of the time-travelers who originally planned to go to the island to have a look did not go up at all.

Because Bai Guoshi was in charge of instructing the mining of struvite, he had no choice but to bite the bullet and get off the boat, holding his breath, and trembling across the pontoon bridge to the island.This is no different from the general situation of Dongsha Island that he has learned in geography.

The terrain of the entire island is slightly higher in the northeast, slightly lower in the southwest, and low-lying in the middle, with an average altitude of about five or six meters.The highest is about ten meters high in the northeast.The whole island is surrounded by high and low in the middle.The central lowland is a silted lagoon, accounting for about one-third of the entire island, and the mouth of the lake opens to the west.

(End of this chapter)