When Xiang Tianliang woke up from the grass, it was already eight o'clock in the evening, and the desolate surroundings were already pitch black.

Zhou Biyang, who was in charge of vigilance, had put on night vision goggles, and he told Xiang Tianliang that he had just finished talking on the phone with Xiao Jiannan, Shao Sanhe and Zhang Meng, and everything was normal, the other party had no movement, and we were on standby.

While whispering, Zhou Biyang woke up Jiang Xueming and Liu Wei.

"Reconfirm where we are." Xiang Tianliang put on night vision goggles.

Zhou Biyang's voice was still very low, "Based on the center point of the eucalyptus forest, we are in the direction of five o'clock, about nine hundred and fifty meters from the edge of the eucalyptus forest, and the swamp is in the direction of five o'clock on the right, about one hundred and ten meters away from us. ”

Xiang Tianliang patted Jiang Xueming on the shoulder, "Team Jiang, set off in the original order, take the center point of the eucalyptus forest as the benchmark, advance in a straight line for eight hundred meters, and arrive within half an hour."

Jiang Xueming responded, and after using the compass to confirm the direction, he picked up the gun with his bag on his back and quickly disappeared into the night.

Half an hour to advance 800 meters is almost like a walk, but fortunately there is still a long time before 12 o'clock, so there is no need to rush.

The four of them gathered together in a sandy area, held infrared binoculars to the dawn, and observed the eucalyptus forest one hundred and fifty meters away for a long time.

"Is there a situation?" Zhou Biyang asked in a low voice.

Xiang Tianliang hummed, and his tone was a little solemn.

Zhou Biyang took the infrared telescope and observed.

"Sure enough, you're on guard." Zhou Biyang sighed in a low voice.

Xiang Tianliang said: "Fifty or sixty meters away from the edge of the eucalyptus forest, there is an infrared protective net. ”

Jiang Xueming hurriedly asked, "What is an infrared protective net?" ”

"It's very simple to say, but it's very practical, that is, to coat some ordinary iron nails with a special chemical raw material, which can make the iron nails emit low-frequency infrared rays within a few hours, and spread these iron nails into a line, this iron nail line forms an infrared protective net, and only needs an infrared signal receiving display, can monitor a thousand meters of infrared protective net, once we walk over, as long as a little cover or step on one of these iron nails, the display will prompt, or chirp or vibrate or flash, They will find out that someone is intruding, about which direction to invade, so that they can prepare for battle or retreat. ”

"That's amazing, huh?" Liu Wei sighed.

Xiang Tianliang said: "And this infrared protective net, it is too easy to arrange, hold the iron nail, throw it while running, at least forty meters can be completed in a minute, I see, there is more than one infrared protective net laid by the old wolf, there should be another one, which may be located on the edge of the eucalyptus forest." ”

"How are we going to get there?" Jiang Xueming asked.

Xiang Tianliang asked: "Do you think about it, in the entire eucalyptus forest, which direction does not need to arrange infrared protective nets?" ”

Jiang Xueming said: "The swamp in the east. ”

"Hehe, so." Xiang Tianliang laughed.

Zhou Biyang was taken aback when he heard this, "Xiang County Magistrate, you don't want to enter from the direction of the swamp, do you?" ”

Xiang Tianliang said with a smile: "I don't want to enter from the swamp, but it doesn't mean that I am not prepared for this." ”

"You, are you sure?" Zhou Biyang was shocked by Xiang Tianliang's boldness.

Xiang Tianliang half-squatted and measured it with a compass, "Now, everyone follow me and move towards the swamp." ”

The swamp is a mysterious and terrifying place.

More than ten minutes later, Xiang Tianliang and the other four came to the edge of the swamp.

Here, less than 70 meters from the edge of the eucalyptus forest, the infrared protective net is more than ten meters away.

The four of them lay on their stomachs, using night vision goggles, looking at the swamp a few meters away.

Knowing that Zhou Biyang, Jiang Xueming, and Liu Wei had doubts about the swamp, Xiang Tianliang had to "popularize" this knowledge.

"In fact, the swamp is not terrible, the so-called marshland, refers to the long-term immersion of water, dense muddy areas, the upper part of the soil profile is saprolite swamp soil or peat swamp soil, the lower part is the latent layer, its organic matter content is high, water holding capacity is strong, water permeability is weak, the volume will shrink when drying, drained and drained, the soil is well aerated and the organic matter can be decomposed, and the fertilizer can be increased."

Zhou Biyang smiled bitterly in a low voice, "Xiang County Magistrate, the swamp can be used as fertilizer, you should tell the farmers of the county." ”

Xiang Tianliang said with a smile: "There are many kinds of swamps, one is from the lake to the swamp, in the humid climate area, the river carries sediment into the lake, because of the sudden widening of the water surface, the speed of the water slows down, the ability to carry sediment is weakened, and the sediment is deposited on the edge of the lake, forming a shallow. , there are also some tiny substances, as the water drifts to the wide part of the lake, deposited to the bottom of the lake, over time, the lake becomes more and more shallow, and in different positions of the depth of the lake, all kinds of aquatic plants gradually multiply, in the depths of the lake, there are various algae such as eyeweed, water lily, water lily, etc., in the shallow area along the coast, there are reeds, cattails, etc., they continue to grow and die, a large number of decaying remains, constantly accumulate at the bottom of the lake, and finally form peat, As the bottom of the lake gradually silts down, new plants appear and develop from all sides to the center of the lake, and the lake becomes shallower and smaller. ”

Jiang Xueming said: "When I was studying, I heard from my geography teacher that the marshland here was formed by lakes, with an area of at least seven square kilometers. ”

Xiang Tianliang hummed, and said: "In addition to the swamp that evolved from the lake, there are several other situations, first, in the forest area, the litter and leaves continue to accumulate under the forest, just like covering the ground with a very thick quilt, which can not only store a large amount of rainwater, but also reduce the evaporation of soil moisture, so that it remains in an overly moist state, in the carbonization process, most of the mineral nutrients in the soil are lost, so that the grass and trees die, and the flourishing bryophytes take their place, bryophytes can retain a lot of water, so that the decomposition process of plant residues slows down, Peat gradually accumulates and forms swamps, second, in some areas that are too wet, weeds can multiply in large quantities and form a thick grass layer, the soil aeration condition deteriorates, the carbon content gradually decreases, so that the original plants gradually decay, and the growth of moisture-loving plants such as water moss, they have a strong water storage capacity, which strengthens the moist condition of the soil, and the meadow swamp can develop rapidly, third, some plateaus and alpine areas, the ground is covered with snow in winter, and the ice and snow melt in the spring and summer of the following year, and the ground is waterlogged, so that the short grass and bryophytes are hybrid, Swamps can also be formed, fourth, along the rivers on the low-lying plains, where the river water is shallow and the flow rate is slow, aquatic weeds can also grow and gradually form swamps, and fifth, the coastal lowlands, repeatedly flooded by seawater, and the beaches are overgrown with reeds and weeds, and salt marshes can also be formed. ”

Liu Wei asked curiously: "County Magistrate Xiang, is this swamp really evolved from a lake?" ”

Xiang Tianliang said: "The teacher of the Jiang team is half right, this swamp is evolved from a lake, but it is also a salt swamp, because it was still a part of the sea thousands of years ago, so in its swamp materials, the salt accounts for about 50 percent, the water accounts for 30 percent, and other substances account for 20 percent, the salt content is high, and the buoyancy is large, so as long as people climb over, they will never sink, only those fools will use their feet to test the swamp." ”

Zhou Biyang asked, "How do you know?" ”

"Hehe, this was originally military land, and the information is now in the county armed forces department, you will know it when you check it."

"Yes, it seems that you have been premeditated for a long time, and you have wanted to visit this swamp for a long time." Zhou Biyang sighed.

Xiang Tianliang said: "Yes, I like swamps, because I have experienced them before, so, a little research on this, in fact, ah, swamps are not terrible, its formation is very simple, mainly depends on the hydrothermal conditions and topography, in which water conditions are the leading factor in the formation of swamps, because the overly wet surface can cause the invasion of moisture-loving plants, which leads to changes in soil aeration conditions, and produces the accumulation of peat under biological action, generally speaking, the formation of swamps can be divided into water swamps and land swamps, The transformation of lakes into swamps is the process of bioaccumulation of organic matter and reduction of mineral elements under the action of wet plants and anaerobic conditions, do you know where the grassland was where the Red Army walked in those years due to long-term water accumulation or seasonal water accumulation on the ground, as well as the impact of groundwater impregnation, long-term overwetness of the soil, and the process of bioaccumulation of organic matter and reduction of mineral elements under the action of wet plants and anaerobic conditions. In the western part of our country, there is a large area of grassland, the aquatic grass is boundless, under the dense grass stems and rotten grass, there is black stagnant water, the surface is very soft, people walk on it, if they don't pay attention to it, they will worry about their lives, this is the swamp. ”

Jiang Xueming said with a smile: "The Red Army is walking over, we can climb over, because we are only a hundred meters away at most." ”

Zhou Biyang asked again: "Hey, you should talk about what to do if you are in distress in the swamp, after all, you need to be prepared." ”

"As I said, swamps are not terrible, of course, whether in the highlands or lowlands, there will be dangerous swamps, accidentally fall into, it is also possible to die, as for the way to survive, it is the same as when you are stuck in quicksand, do not struggle, you should take a flat position, try to expand the contact area between the body and the quagmire, and slowly swim to a safe place and get out of danger, then, how to identify the dangerous quagmire, the quagmire is generally in the swamp or damp soft muddy wilderness area, if you see a black flat land with no grass, Be careful, and at the same time, keep an eye out for the blue peat moss bogs, sometimes, the water moss is covered with mud and the surface of the bog is like a carpet, in fact this is the most dangerous trap, if you have to walk through the mud pool, then you should walk along the high ground where trees grow, or step on the stone moss grass, because trees and stone moss grow on hard ground, if you are not sure which way to go, you can throw a few large stones forward, try whether the ground is hard, or stomp your feet hard, if the ground is shaking, it is likely to be a mud pool, you should take a detourIf you are trapped in a swamp, you can save yourself according to the self-rescue method in the quicksand, the method is exactly the same, and, how to maintain life when you are trapped in the swamp, in the vast swamp area, the biggest threat is the wet and cold weather, if you wet your clothes and are exposed to the cold wind, it will be easy to be frozen, so you should find a place for animals to hide from the wind and rain as soon as possible, such as woods, bushes, caves, rocks, embankments, etc., are good places to shelter from the wind and freeze, and at the same time, collect rainwater or melt the ice and snow as drinking water, However, in the event of heavy rain, snow or fog, don't venture out unless you have to, but wait until the weather improves before moving to a safe place nearby......"

Zhou Biyang smiled: "Just say it, how do we go over now." ”

"Wear a raincoat to prevent water from getting into your clothes, because water can add weight to your body."

Liu Wei took out four sets of rubber raincoats from his bag, and the four of them put them on separately and tied them tightly.

Then, Xiang Tianliang lay down on the ground, like a frog.

"You see, this is the frog position, but remember, don't learn to jump as a frog, but keep the frog position, try to keep your chest and abdomen on the ground, and then use your arms and legs to move forward slowly."

Zhou Biyang couldn't help laughing again, "It's okay, as long as we can cross the swamp, you can let us learn how to chop dogs." ”

"Also, I'm the first, the Jiang team is the second, the Liu team is the third, and the Zhou Bureau is the queen of the palace, keep a distance of about five meters respectively, pay attention, if you find that your body is sinking, don't move, as long as you send a signal, I will have a way to save you."

After saying that, Xiang Tianliang began to crawl towards the swamp.

The rest of the people did not dare to slack off, and learned to crawl cautiously towards the dawn.

There was grass on the ground, growing softer and softer, and shaking, as if crawling on the deck of a ship.

However, the distance is only a hundred meters, but it seems to have no end, long and terrifying.

Xiang Tianliang himself is actually very careful, he is a pathfinder, and on the premise that the general direction is good, he should try to climb to the harder soft ground.

For twenty minutes, Xiang Tianliang's hand finally touched a stone, and he hurriedly stretched out his other hand, yes, it was a stone.

With a cheer in his heart, Xiang Tianliang hugged the stone with both hands, his arms were forced, and his body flew up like a piece of wood, and fell gently to the ground.

Looking further back, there is a stone wall, about six meters high, and at the top of the stone wall, there are straight xiangshang eucalyptus trees.

The eucalyptus forest has arrived.

Wave at dawn and the way you came.

Jiang Xueming also arrived, grabbed his hand from Xiang Tianliang and pulled him up.

There was no danger, Liu Wei and Zhou Biyang also arrived safely.

The four of them took off their rubber raincoats first and threw them all into the swamp.

Zhou Biyang came to Xiang Tianliang's side, panting, and asked quietly: "You just said that if you sink, you will have a way to save it, what is the way?" ”

"It's already here, so you don't need to say it, do you?" Xiang Tianliang replied with a smile.

Zhou Biyang is very serious, "It's a good way to say it, I'll use it to publicize and publicize it to prevent others from accidentally falling into it." ”

"Heh, I lied to you, if you sink, it's over, and there is no way to save it."

"Ah......h

"Shh......hh