Wang Defa checked their previous plans for planting rubber plants and found that the owner of Zhang Guoan still sealed most of the three-leaf rubber seeds, but only planted a small number of rubber trees in the greenhouse. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

Zhang Guoan, the owner of the island, explained: "I have always wanted to buy a rubber plantation in Yazhou, Hainan, but there is no reliable candidate, and the survival rate of clover rubber seeds is too low, so I want to operate it myself next year...... Now there is a eucommia tree planting area and a silver gum chrysanthemum island, so there is no hurry. ”

Wang Defa understood that the slow speed of this time and space also affected his friends, and he began to pursue steady development without eagerness.

Before they crossed, they planned to use three methods to get rubber.

Trilobalty rubber is authentic rubber, needless to say, eucommia rubber and silver gum chrysanthemum rubber are also the focus of their development.

Eucommia ulmoides is a unique plant of the Great Song Dynasty, which is a high-quality gum-source tree species with a wide range of adaptation and great development potential.

Based on the unique structure and properties of Eucommia ulmoides gum, three types of materials for different purposes can be developed: rubber high elastic materials, low-temperature plasticity materials and thermoelastic materials, which are widely used in various industries.

The key is that it is also a kind of Chinese medicinal material, which is very recognized by the pharmaceutical industry of Da Song.

So, there are many benefits to growing it.

The seedlings of the Eucommia ulmoides tree can be used to extract rubber, and when its age increases to 10 to 15 years, it can produce more than 270 kilograms of rubber per hectare.

Its extraction method is also very easy, 70% of the colloids can be easily leached under lye conditions, and the vulcanization treatment is also convenient.

Now, because the owner of Zhang Guoan kept buying eucommia in the Great Song Market, some shrewd merchants began to grow their own in the mountains.

But this amount is not enough for Zhang Guoan's island owner to hoard...... Because the best results can only be achieved by large-scale leaching.

Of course, he also organized people to plant in the mountainous area of Liuqiu as early as the year before last, and now they are all handed over to the indigenous people to care for and take care of.

The second way is to plant silver gum chrysanthemum.

There was still some controversy about this plant at the time.

Ginkgo chrysanthemum is an annual herbaceous plant. The stems are erect and 0.6-1 m tall, multi-branched, and bloom from April to October.

It is native to tropical Americas and can be found in open fields, roadsides, riversides, and slopes.

It can grow in a wide area, and can develop from roadside to wasteland and cultivated land, which will cause great harm, including invading the roadside, obstructing traffic, and damaging the road environment; encroachment on grazing land to reduce the amount of grass on grazing land; invasion of cultivated land, resulting in reduced crop yields; Moreover, it is toxic, can cause human dermatitis, rhinitis and asthma, endanger human health, and is a malignant weed.

In that world, it has also caused the death of livestock.

However, its rhizomes and leaves contain colloids, which can extract about 100 kilograms per mu if they are extracted by air drying, grinding, cooking and alkali macing.

This thing has a short growth cycle, growth, and belongs to the plant that grows when it sees the wind, so it takes a little manpower to grow it.

In the end, Zhang Guoan, the owner of the island, planted them all on the island, and it was strictly forbidden to bring the silver gum chrysanthemum that was not dried to Liuqiu Island.

The biggest benefit of silver gum rubber is that it does not cause various allergies, and it is a good raw material for making shoe soles, gloves and inner tubes.

Of course, like eucommia rubber, it is not as resistant to high temperatures as clover rubber, and it is not the best raw material for making tires...... However, in this time and space, no one can increase the speed of a car to the point where tires are needed to withstand the heat.

As for the various gaskets, as long as they can reach medium and low temperatures, they are fine.

Within a few months of Wang Defa's return, the industrial process on the island had accelerated...... Especially in machining, this has promoted the rapid development of other industries.

For example, the shipbuilding industry in the Badaohe area.

Wang Defa provided Zhang Laoshi with better and larger shipbuilding equipment, especially several mobile pot camel machines, which immediately accelerated the shipbuilding speed.

The pot camel machine could have been made of wrought iron, but in order to strengthen the furnace pressure, he changed it to good steel.

In this way, the first special sail carrier dedicated to transporting large livestock was launched in advance.

After the sea trial, the second and third were mounted at the same time, and the first went straight to the Tianzhu area, where it was going to change for a buffalo.

This is a sail carrier is a five-masted schooner, with three decks, a length of 93 meters, a width of 15.5 meters, a deck thickness of about 0.50 meters, a draft of seven meters, and a deadweight of 1,200 tons.

It wasn't the largest ship in the Great Song Dynasty, but it was the largest ship in the rest of the plane.

Some overseas businessmen unconsciously knelt down when they saw it......

It can reach speeds of up to 15 km/h at full sail and can normally be replenished without docking for a month.

It required three hundred sailors...... Wang Defa originally wanted to use a small pot camel machine to help raise the sails, but considering the greater demand for industrial production, it was better to let them use a pulley block.

In the cabins on the second and third floors, there are various small compartments that can be assembled, and can transport five hundred large animals at a time...... The hygiene and ventilation in the cabin was excellent.

Wang Zheng and Xiao Er did not participate in the war on the mainland, and the island lord Zhang Guoan asked them to concentrate on the maritime trade with the Tianzhu region, and they had to obey orders.

And they often have wars with pirates from all over the world, and their days are quite interesting.

The two of them forgot the old and forgot the new, and immediately made this ship the main ship of their caravan.

The transport was equipped with a hundred cap-type guns, fifty short guns, and eight cannons that could be improvised assembled.

This armed strength is nothing in the eyes of Zhang Guoan's island master, because it is not a real warship at all.

However, in the eyes of the other merchants who accompanied him, this is simply an invincible king of the sea!

They privately called him the King of the Sea, and it wasn't until Liuqiu Island produced an Anjiang-class warship that they changed their tune.

This time, they brought more goods with them, especially low-end porcelain from the island of Liuqiu.

Originally, the owner of Zhang Guoan Island also wanted to set up his own porcelain kiln, but after the test firing, he found that the products of the five famous kilns of the Great Song Dynasty such as Ding kiln, Ru kiln, Guan kiln, Ge kiln and Jun kiln were not as good as those of the Great Song Dynasty...... And how his products look at it is cheesy, it can only be used as an ordinary household.

Zhang Guoan, the owner of the island, rummaged through the technical information about porcelain burning, but the result was still not up to their level, and in the end, he decided to take the low-end road first, and make money the same!

This time I went to the Tianzhu area to exchange cattle, and since the entire merchant fleet joined the five-masted transport ships, they could bring more goods, so they brought low-end porcelain fired from Liuqiu Island.

But Wang Zheng and Xiao Er said coawardly: "Why is it called low-end? A porcelain bowl or a porcelain plate can be exchanged for a cow! ”

It's true, it's the buffalo world. (To be continued.) )