In the achievements of restoring and developing agricultural economy, Yang Wu and Nan Tang's management of Jianghuai is a heavy stroke. At the end of the Tang dynasty, the soldiers made Huainan the hardest hit area, and Yangzhou was particularly badly damaged. In the bustling city of the past, "the granaries in the city were empty, and the hungry people killed each other and ate. Their husband and wife, father and son held hands, slaughtered and sold them, and the butchers were like sheep." (Volume 61, "Wu Shijia") Not only in the city, "within eight States, the bow is a barren hazel, and it travels for hundreds of miles, and people are cut off." Dr. Tai Chang of Song Dazhong Xiangfujian promised that "Wu Tang's Collection of Legacy Records Persuades Farmers to Mulberry" also said: "In the middle of Wu Shunyi's year, officials sent officials to promote the edition book, set rent taxes, and went to the fields, and every hectare of tax money was 1 articles. Nakata's tax money was always 8, and the farmland was 1,5, which was enough to see money; If you see that money is insufficient, you can convert it into gold and silver according to the market price. Calculating the tone of oral class can also save money. When Song Qiqiu was a foreign minister, the best policy was to beg for a virtual price and fold it? Mian Si, in its true colors, said, "The land of the Yangtze River and Huaihe River, where the Tang Dynasty has come, is the place of war. Today, when the war is over, Li Wei will be safe, but he will pay for money and convert it into gold and silver, which is not available to the people. There is no interest in peddling it, but it is for the sake of teaching people to abandon their roots and ignore their ears. When, silk market price of five hundred per horse,? Six hundred articles, every twenty-five articles; Qiqiu asked the silk to be lifted to 7 per horse. For two penetration four hundred, cotton for forty, all enough money. Ding Kou's class tune should also be removed. It is a loss of official money to block the discussion, which is quite a lot. Qi Qiu wrote to Xu Zhi-gu, saying,' Ming Gong always has hundreds of officials, manages a big country, supervises the people to see money and gold and silver, and strives for the prosperity of the country. As the saying goes, holding a comet to put out the fire, scratching the water for clarity, and extinguishing the water if you want to' The book said,' This is also the best policy to persuade agriculture. "That is. Naturally, in ten years, there is no idle field in the wild and no space in the mulberry. Since Wu changed to Tang, since Tang returned to Song, the people have been given it today. " During the first year of the Ascension, the renovation of Lian Lake in Danyang was a major project, which was valued by the history of water conservancy. Lianhu Lake began in the Western Jin Dynasty, and became an important lake in the south of the Yangtze River in the Eastern Jin Dynasty, which can irrigate fertile land in Danyang, Jintan and Yanling counties. In the Tang Dynasty, Lianhu began to supply water to the Jiangnan Canal. After the mutiny at the end of the Tang Dynasty, Lianhu was in disrepair for a long time, and there was little irrigation power in the Southern Tang Dynasty. Lu Yanzhen, the magistrate of Danyang County, presided over the dredging and renovation project of Lianhu Lake, which "built a plug around the bank and dredged the bucket door", and restored the water conservancy function of Lianhu Lake. In rainy season, you can draw water from forty-eight schools; In the dry season, the surrounding counties can be irrigated, and the Jiangnan River can be irrigated. "The mission is business travel, boat and boat exchanges, and cattle are exempted. From the perspective of regional politics, the eastern part of Jiangsu was under the rule of Wu Yueguo at that time, but wuyue's water conservancy renovation of Taihu Lake in Jiangsu today benefited from the relatively stable environment created by Nantang and * * *, which was indirectly caused by Nantang's policy to some extent, which is worth mentioning. At that time, wuyue took care of the "shallow army" in the important water conservancy project, and "ordered four troops to be set up next to Taihu Lake. Every seven or eight thousand people often worked for the fields, built dikes for the rivers, and all the way down the Wusong River, all the way from the emergency water port to Dianshan Lake to the sea. When the residents were dry, they carried water to farm, and when they were waterlogged, they diverted water out of the fields".

in the economic development of southern Tang dynasty, with the shift of the focus of China's agricultural economy to the south, a new pattern of rice cultivation, supplemented by diversified management such as wheat, mulberry, tea, hemp and fruit, has gradually taken shape in Jiangsu. The excellent crop varieties in the south are heading north, which has become a general trend. Jiangnan region is the hometown of rice, and rice was widely planted in Gwangju, Yangzhou, Taizhou, Chuzhou and Sizhou in the Southern Tang Dynasty, which not only increased the yield, but also improved the varieties. Taizhou's fragrant japonica rice was very famous. The momentum of the traditional fine varieties in the north spreading southward has also increased. In the south of the Yangtze River, the wheat in the north has been widely planted, and there has been a scene of "green eyes and ridges". Mulberry is cultivated all over the Jianghuai area, so it is known as "the land is vast, the mulberry is full of wild, and the country is rich and strong".

tea production was famous for its tea gardens in Gwangju, Yangzhou, Changzhou and Runzhou. Yixing has a long history of tea production. Yangxian Tea is a famous brand in Jianghuai. It was well-known in the south of the Yangtze River as early as the Sun and Wu Dynasties in the Three Kingdoms. At that time, it was called "National Camellia", and later it was called "Yangxian tribute tea", "Piling tea", "Yangxian purple bamboo shoot" and "Jinling purple bamboo shoot". During the period of Tang Suzong, "Yangxian Purple Bamboo Shoot" was listed as a tribute treasure, and Cha Sheng Lu Yu thought that "Huainan tea is on the top of Gwangju" and Yangxian tea was "the best in fragrance", which could be regarded as a tribute. Li Qiyun, the secretariat of Changzhou, adopted his suggestion, that is, to build a tea house next to Nianhua Creek, collect and pay tribute to tea every year, and drink Yangxian tea has become a popular fashion. In the Southern Tang Dynasty, "Yangxian Tea" was still a famous tea. Later, with the southward movement of tea-producing areas, Beijing Collar Tea produced in Jianzhou gradually took its place as a tribute, and the court ordered "Yangxian Tea". Among the southern countries, the Southern Tang Dynasty was the most vigorous for the development of agriculture. At that time, the royal treasury was full, and "where weapons were accumulated, there were more than seven million silks". The prosperity of the country's agriculture and mulberry industry is unprecedented, and the depth and breadth of agricultural development are unparalleled in the north and south. Of course, it is lack of academic significance to describe the performance of agriculture alone. The above content aims to reveal that after the correct policy, building water conservancy is the first important item for the Nantang regime located in the Jianghuai basin to develop the south, improve the living environment and March into the depth and breadth of production. The gradual formation of rice planting as the main mode, supplemented by wheat, mulberry, tea, hemp and fruit, marks the formation of a new pattern of China's agricultural economic center shifting southward in Jiangsu, and the economic activities based on it gradually show fresh vitality. Mr. Zheng Xuemeng pointed out in the article "Agricultural Economy in the Yangtze River Basin and Jiangnan Area in the Five Dynasties Period" published in 1985 that in ancient northern China, the policy of farming and warfare was basically implemented since Shang Yang's political reform, and the so-called "having enough soldiers and food" was also true. Because the north was the political center of ancient times, there were many officials and soldiers, and there was a great demand for food. The government's tax policy decided that the northern agriculture should focus on growing grain. Due to the lack of the tradition of taking grain as the key link in the north, there are not as many officers and men in the north, and because of the superior natural conditions, it is easy to grow cash crops and have good diversified management conditions. Therefore, in the commercial process, Jiangnan agriculture develops its strengths and avoids its weaknesses, uses superior natural conditions to grow cash crops and carry out diversified operations, which makes the south appear the trend of agricultural commercialization earlier. The author thinks that, in a sense, it is this commercial implantation that makes the development of south china agriculture have a higher platform completely different from the past. Since then, Jiangsu's regional economic development has taken agriculture as a breakthrough, gradually opened its posture and moved towards a new era. According to Feng Menglong's Taiping Guangji Banknotes, Zhao, the wife of Sun Quan of the Three Kingdoms, can weave a brocade with dragon and phoenix patterns. During the Liu and Song Dynasties in the Southern Dynasties, Liu Yuqian moved Luoyang brocade worker to Jiankang, and set up a "fighting field brocade department" to specialize in brocade production, and Jinling brocade technology began from then on. When Yang Wu paid taxes on textiles, it greatly stimulated textile production, and it was unprecedented in the Southern Tang Dynasty. Runzhou's square grain silk and water ripple silk are superb in technology. Folk looms are popular, and there are countless weavers. Many people are skilled, not only working in Nantang, but also distributed in neighboring countries. Runzhou Jin Gong enjoys a good reputation. Xu Wan, a native of Runzhou, launched a rebellion in Hangzhou. There are more than 3 Jin Gong workers in the city, all of whom are Runzhou people. Yuan Ying, the eldest son of Qian Liu, is afraid that they will participate in Xu Wan's rebellion and announce that "the king has ordered all the workers to be exempted from today's work". (Volume 1, "The King of Armed Forces") to quell the rebellion. There are workshops in the southern Tang government, with many varieties and a large number. "At the beginning of the Yuan Dynasty, Xu Wenwu looked at the hidden treasure, took gold and silk at will, and left with heavy load." It can be seen that the national treasury is huge. For the reward of sealing the official, there are also many rewards for silks. Zhang Xian, the censor, wrote that Li Yu "gave silks thirty paragraphs to speak out". Li Houzhu's Ci is a portrayal of court life in the Southern Tang Dynasty. In his works, there are many beautiful words and beautiful sentences such as "Red Brocade and Green Brocade" ("Huanxisha"), "Embroidered bed leans against the charming" ("A Welcome to the Pearl") and "Thin shirt and thin brocade" ("Sauvignon Blanc"), which are very readable. However, some things are sad, such as "the pillow on the mountain is tired, the brocade is cold" ("More Leaky"), "Luo Zhou can't stand the cold in the five seasons" ("Langtaosha") and "the jade hooks the curtain, and the melancholy smoke hangs down" ("Linjiangxian"). Li Yu "tasted in the palace to pin the golden red Luo on its wall, nail the tortoise shell with silver, brush the eye with green cymbals, paste the red Luo, and so on ...". Every Tanabata is a coincidence, and a hundred horses will be ordered to think of the Moon Palace as the Tianhe River. " Behind such luxury, it is supported by a grand textile foundation. Due to the development of textile industry, dyeing technology has also been improved. Li Yugong's people "dyed blue, exposed in the atrium in the evening, dyed by dew, and their color was very good". (Volume 1) This kind of dyeing, which was almost turquoise, enjoyed a reputation at that time. The list of dyeing shops in Jiankang City was titled "Tianshui Bi". Later generations have praised "Tianshui Bi", even the lyrical objects, "Tianshui Bi" has become a common beautiful word. In the Song Dynasty, there was a sentence in Yan Shu that "the rain at night turns into a blue sky". Zhou Mi's "Wen Quexi Wu Shan Watching Tao": "Tianshui is blue, dyed with autumn colors of a river, and the dragon wears a snow mountain to sting, and the wind blows the sea. Counting the cigarette drops, the sky is red and wet, and the sails in Bai Niao are straight, and the night flute is heard across the river. " The artistic conception rendered by "Tianshui Bi" is extraordinary. Textile industry is not only a handicraft product, but also an important material basis in national management. In 939, the imperial edict of the third year of the Southern Tang Dynasty, it was stipulated that "fifty silks will be given to people who have cultivated mulberry and 3, books for three years". (Volume 15, Biography of the Liezu of the Southern Tang Dynasty) Li Yuchong worships Buddha, and there are many silks in the temples where he works, which shows the surplus stock of silks in the Southern Tang Dynasty.

Huainan, Yangzhou and Chuzhou are the main salt producing areas in ancient China. Yangzhou is famous for Jiangdu and Hailing, while Chuzhou is famous for Yancheng and Lianshui. Yangzhou, in particular, is located in the thoroughfare of the north and south. Since ancient times, salt merchants have gathered in great wealth, and it has been the national salt distribution center. In the Tang Dynasty, it was said that "Yang Yi Er". Gu Yanwu said in the book "The Diseases of the Country and the Country in the World" that as early as the Han Dynasty, Liu Ying, the prince of Wu, started to ditch the water, and from Zhuyuwan Scenic Spot Tonghai Lingcang and Rugao Panxi, he specialized in cooking the sea for profit and digging rivers to transport sea salt. After the founding of Yang Wu and Southern Tang Dynasty, salt industry was regarded as an important capital, and salt industry became a major social economy in Jianghuai. Yang Wu set up a Hailing home in Taizhou, and the private household land tax stipulated that every seedling should be welcomed, and three buckets should be added, and the official gave a liter of salt, which was called "salt rice". In 937, the first year of the rise of Yuan Dynasty in Southern Tang Dynasty, the Southern Tang Dynasty relocated Taizhou and set up Hailing Supervisor, which strengthened the management of salt industry. Yancheng supervisor was also set up in Chuzhou to "manage the salt pavilion 123". By the reunification of the Northern Song Dynasty, Yancheng had "more than 417, stones, Taizhou Hailing Salt Rugao Warehouse and Xiaohaichang 656, stones." Huainan salt profit played a very important role in the rule of Southern Tang Dynasty, so that after Zhou Nanzheng acquired several states in Southern Tang Dynasty, the salt field in Southern Tang Dynasty was completely lost and the economy was severely hindered. Li Jing said on the table that he was willing to "give all those who were not trapped in Jiangbei County, and lose hundreds of thousands of local taxes at the age of ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… Since then, the salt industry has become an economic bargaining chip for the later Zhou regime to firmly control the Southern Tang Dynasty.

Yangwu and Nantang are located in the Jianghuai water town, with numerous lakes and a well-developed shipbuilding industry. As early as the Sui and Tang Dynasties, Huai 'an was now a shipbuilding base along the Huai River. The ships built by Emperor Wen of Sui Dynasty from Huai River entered Bian River along the Huai River. Emperor Taizong crusaded against Korea and built hundreds of large warships in Jianghuai. Yangzi Shipyard in Yangzhou is a large-scale shipbuilding base in Tang Dynasty. When Liu Yan was in charge of water transportation, according to the different hydrological characteristics of the Yellow River, the Yangtze River, Huai River and Bianshui, various suitable ships were built and put into transportation. In the late Tang Dynasty, the official shipbuilding industry gradually shrank due to poor management. During the period of Yangwu and Southern Tang Dynasty, Yangzhou, Jinling and other places were important shipbuilding centers, and the government set up shipyards to build all kinds of ships. There are several reasons for the prosperity of shipbuilding industry: First, with the southward shift of China's economic center of gravity and the geographical environment near the river and Huaihe River, people who have gradually broadened their horizons have expanded their lives. After the germination of commodity economy, ships are needed to open up waterway transportation for daily business travel, trade, production and life. For example, when the Southern Tang Dynasty conducted maritime trade with the Khitan, in the second year of the Southern Tang Dynasty (938), the Khitan "brought 3, sheep and 2 horses", and the scale of the transaction was so large that if the land was blocked, what kind of ship transportation was needed could be inferred; Second, with the development of grain transportation, especially the salt industry, the shipbuilding industry is booming again, and the finished salt in coastal saltworks must be transported to the distribution center, and ships are the first choice of transportation equipment; Third, due to the need of war, it directly promoted the shipbuilding industry of Yang Wu and Nantang to flourish. First, Yang Wu and wuyue fought a long-term tug-of-war with the center line of Taihu Lake as the boundary. On the Langshan River of the Yangtze River and the waters of Taihu Lake, both sides invested a lot of water troops, and the battle was tragic. Later, a shipbuilding base was set up in Daliang in the following week. Facing the threat of war, the Southern Tang Dynasty stepped up the shipbuilding competition, which could not only build huge warships, but also build short and sensitive reconnaissance canoes. From the third year of Zhou Xiande (956) to the fifth year of Xiande, the naval officers of the two sides fought for three years. From the names of "kayak" and "boat" that are common in the literature, we can imagine the developed degree of the shipbuilding industry of both sides at that time. Fourth, for the needs of diplomatic navigation. Due to the blocking of north-south traffic, Nantang had to seek outward development. For example, the friendship between the Southern Tang Dynasty and the Khitan opened up a sea route to deal with the Central Plains regime. Another example is to import "fierce fire oil" from Zhancheng for military reasons, and then transport this oil to Qidan. It is unthinkable that there is no huge transport ship. In addition, Nantang also keeps in touch with Silla, Korea, big food and other countries, so such a voyage also needs superb shipbuilding technology to ensure.

Chengxin Tang paper was one of the famous papers in the Five Dynasties. The empress of the Southern Tang Dynasty in the Five Dynasties was good at writing poems and liked to collect books and papers. Therefore, a house in Jinling government was named Chengxintang as a place for poetry collection. After the Southern Tang Dynasty, the master specially invited Sichuan paper makers to come to Chengxintang to make a new paper with excellent texture, which was named "Chengxintang Paper". Because the quality of Chengxintang paper is very good, so that a piece of paper is worth a hundred gold, and it is a leader in paper products. Since then, the Song Dynasty and the Qing Dynasty have also learned the technology of the Southern Tang Dynasty and produced and used this kind of paper.

The advantage of Jiangsu's being near the river and the sea made the handicraft industry during the reign of Yang Wu and Southern Tang Dynasty not only have a very strong regional color, but also present a prosperous situation of letting a hundred flowers blossom. The site of late Tang and Five Dynasties celadon kilns found in Guijing, Yixing, reflects that the porcelain-making industry in the south of the Yangtze River is unique in terms of embryo quality, glaze color, modeling and decoration. Shugang Tea in Yangzhou and Zizun Tea in Changzhou in Southern Tang Dynasty are famous all over the world. Due to the development of tea production, the tea industry flourished in Southern Tang Dynasty. There are as many as 38 tea shops in Southern Tang Dynasty, which specialize in producing high-grade tea products for the use of royalty and nobility. There are more private tea workshops, and there are more than 1, private tea workshops in China. The center of paper industry in Southern Tang Dynasty was in southern Anhui, but according to Jiangnan Tongzhi, there was a "paper business" in Liuhe county at that time, and now the area south of Liuhe pontoon bridge is still called "paper house". Because Li Yuzhong is good at Xuan paper, it is also possible that there are specialized institutions in Chi, Juan County and Jinling to make Cheng Xin Tang paper. Some people have verified from folklore that the variety of "White Deer" in Xuan paper was made in Nanjing, and this paper was named to commemorate a young man named White Deer who made paper from Xuancheng to Jinling.

In addition, the manufacture of gold and silver wares and bronzes in Yangzhou and Runzhou is exemplary. It is said that Li Yu specially ordered craftsmen to build a six-foot golden lotus, so that the maid-in-waiting stood on the lotus and danced with her feet bound. The new characteristics of commerce in Southern Tang Dynasty should attract the attention of academic circles. The Five Dynasties and Ten Kingdoms is a specific era. In a relatively narrow space, countries, especially those in the south, have a serious shortage of national use. Therefore, they generally attach importance to attracting merchants, operating business interests, and collecting business taxes to supplement the national use, and commodity exchange is unprecedentedly active. As a result, although countries are at odds with each other, private transactions are becoming more and more frequent; Although the Grand Canal was blocked, shipping developed. The degree of business activity in southern countries increased according to the Tang Dynasty. What the rulers of various countries did not expect was that in the process of commercialization of agriculture and various economic behaviors in the south of the Yangtze River, the functions of cities changed greatly, which were embodied in political functions.