Tian Chengfang，LUChengwang，Lin Chengxing，Communication，Canal connection。This is not Jiangnan，This is the location of the major ditch construction and land consolidation project in Yan'an, Shaanxi Province - Nanniwan。

Who would have thought，a few years ago，This place is still barren and barren、The overgrown "Mud Bay"。Researcher Han Jichang, general manager of Shaanxi Land Engineering Construction Group (hereinafter referred to as "Shaanxi Land Engineering"), told the author: "Now Nanniwan，Due to the implementation of the ditch construction and land conversion project from dry land to paddy field，The yield of rice per mu has increased from more than 200 kilograms to more than 400 kilograms，And the integration of land remediation and red cultural tourism，Reproduces the wonderful scenery of "Northern Shaanxi and Jiangnan"。”

Old Mud Bay New look now

Nanniwan is located 45 kilometers southeast of Yan'an City, Shaanxi Province。Former Nanniwan，Sparsely populated，Desolation and loneliness。1941，The 359th Brigade of the Eighth Route Army launched the famous mass production movement in Nanniwan，The officers and soldiers used their hard work and sweat to create "Northern Shaanxi and Jiangnan"，The ballad "Nanniwan" sung all over the country describes Nanniwan in this period。

But in the past ten years，Nanniwan “is full of crops，The scene of cattle and sheep everywhere” is long gone。Due to the extensive traditional rice planting model，At the same time, there is a lack of corresponding drainage system，Resulting in Nanniwan becoming "Slush Bay"。The reeds here grow taller than people，The mud is more than one meter deep，Farmers dare not go to the fields for this reason，The planting area of ​​Nanniwan was even less than 50 acres at one time。Because rice cannot grow，Farmers’ income cannot be improved，Complaining about this。

In order to improve the local ecological environment，Benefiting people’s livelihood，Let "Lanniwan" regain its former style of "Northern Shaanxi and Jiangnan"，Decision of Shaanxi Provincial dafabet casino mobile appDepartment of Land and Resources and Yan’an Municipal Government，Preliminary investment from Shaanxi Land Construction，Carry out large-scale comprehensive remediation of Nanniwan land。

According to introduction，The total construction scale of the project is more than 8,800 acres，Including Yangwangou、Two sub-projects of Jiulong Quangou，With "centralized connection、Completely equipped、Stable and high yield、Continuously efficient" is the design concept，While paying attention to ecological protection，Combined with the red tourism characteristics of Nanniwan，Incorporate modern elements。Through the application of systematic innovative technologies and engineering measures，Make this project an ecological and livelihood project、Renovation Demonstration Project and Ditch Control and Land Creation Model Project，Restore the rice fields in the core area，Create landscape agriculture。

How can such a huge project be completed overnight？Shaanxi construction step by step，Completed land leveling projects in Nanniwan、Road Engineering、Irrigation and drainage projects, farmland protection and ecological environment protection projects。After more than three years of hard work，Now Nanniwan，Land concentration and contiguous area、Completely equipped、Stable and high yield、Eco-efficient、Suitable for sightseeing。The paddy field has been increased from the original low standard of more than 30 acres to the high standard of 1,500 acres，Other land types are changed to high-standard irrigated land，A total of more than 4,000 acres of abandoned farmland has been restored。

With high-standard land that can be cultivated，The income of farmers in Nanniwan area has naturally increased，At the same time, it creates important prerequisites for the local implementation of returning farmland to forest。Chen Tianqing, manager of the Nanniwan Project Department of Shaanxi Land Construction, said，Shaanxi Construction did not contract the land，Just keep tracking、Continuous maintenance，The land still belongs to the farmers。Now farmers voluntarily lease their land to a cooperative for management，Farmers can also work in cooperatives，Get two incomes。At the same time，Red tourism resources attract many tourists，People stop in the rice fields，Close contact with nature，Relive the beautiful scenery of "Northern Shaanxi and Jiangnan" back then。

In accordance with the Ministry of Land and Resources、Requirements of the Ministry of Finance on supporting documents related to major land reclamation projects of gully construction and land reclamation in Yan'an City, Shaanxi Province，This project is to help increase the area of ​​high-standard farmland，Improve the quality of farmland，Improving comprehensive agricultural production capacity，Improve the ecological environment，Consolidate the foundation for rural development，The goal is to increase the income of farmers。Now these goals have been successfully achieved。August 13，Minister of Land and Resources Jiang Daming came to Nanniwan land consolidation project site inspection，Highly praised the successful transformation of Nanniwan: “Only technological innovation，Only to promote land project construction，Only with high quality、High standard farmland output。”

Constructing ditches and creating land Technological innovation lights up green hope

Renovated after ditching and land reclamation project，Relying on the unique ecological environment and red resources，Now Nanniwan has truly become a tourist destination、Ecology、A red leisure town integrating sightseeing，Become a shining pearl in northern Saibei。

The reason why Nanniwan dafabet loginhas undergone such earth-shaking changes，Inseparable from the "Four New"，Four innovative ideas for scientific research transformation。

Yixinxin in general exploration technology。There is a height difference in the thickness of the soil layer in Nanniwan，General exploration technology makes renovation projects more tailored to local conditions。Scientific researchers detect the thickness of the soil layer through general exploration technology，Group fields with similar soil thickness together，Making land use more scientific，Improve land utilization。Also improve the flatness of the fields，Concentrate the fields into a contiguous area，Thus improving the level of mechanized farming。

Er Xinxin is controlling water in Jiegou。The difficulty facing Nanniwan management is to solve the problem of "too much water"。Due to special geological conditions，The groundwater level is too high，There are a large number of saline-alkali lands and wetlands that cannot be cultivated in Nanniwan。

“The key to managing Nanniwan is drainage problem，Instead of a question of irrigation。"Han Jichang said。The scientific research team is based on traditional drainage，Repeated studies on soil water retention and soil flow，Finally formed a method of cutting ditches and controlling water。Excavate water intercepting trenches where there is a large drop in the field，Cut off water from upstream and mountain streams，At the same time，Control water level in intercepting ditch，Regulating groundwater。Achieve "saving money during drought"，Discharge during flood season”，Solved the problem that wetlands under ditches could not be cultivated。

Sanxinxin is connected with irrigation and drainage。Building interception ditches is not enough。Scientific researchers also cut off the ditch、The drainage ditch is connected to the irrigation system，Form an efficient irrigation and drainage system。“The benefits of integrated irrigation and drainage are，In times of drought, water from the main canal is directed into the intercepting ditch，During floods, excess water can be introduced into the main canal through the intercepting ditch and drained away。" said Wang Huanyuan, a researcher at the Shaanxi Provincial Land Research Institute，"This will 'stop'、Save、The combination of row and row，Scientific deployment of dams、Reservoir、Irrigation and drainage facilities，Connected by ditches，Solved the water source and irrigation and drainage problems。”

Four new developments in ecological protection。Han Jichang’s scientific research team protects the ecosystem of Nanniwan，Start with the details，A lot of thought。They are building ecological corridors on the canal system that integrates irrigation and drainage，Open biological channels，Built the Life Corridor，Maintain the ecological balance between fields to the greatest extent，Formation of diverse landscape patterns，Improve the quality of eco-tourism。

Based on the "Four New"，The Nanniwan land consolidation project is also a sustainable development land project，In the words of researchers，It is to provide "lifelong service" to this land。Shaanxi Dijian first conducted a one-year trial planting on the good farmland renovated in Nanniwan，Testing soil composition during the 4 to 5 critical growth periods of rice，After it meets the standards, it will be handed over to the cooperative for management。Every year thereafter，Scientific researchers must test the modified soil composition in stages，What is missing from the land，Just make up for anything。This is not only responsible for the land，It is even more dafabet mobile loginresponsible for farmers，Responsible for national food security。

Don’t forget your original intention Promote the ecological construction of land consolidation

The Nanniwan gully construction and land consolidation project is also an epitome of Shaanxi Land Construction's promotion of land consolidation and ecological construction。

Land consolidation as an engineering method on the road to civilization and progress of human society，Must follow the basic laws of sustainable development，Must be implemented from the perspective of sustainable land use and ecologically sustainable development，operate within the allowable limits of the ecological environment。

more than ten years，Shaanxi Land Construction takes the lead in scientific research and innovation in land consolidation，Actively promote the land consolidation theory based on the concept of ecological construction、Method、Technical Research，By implementing saline-alkali land management in Guanzhong and northern Shaanxi areas、Abandoned homestead reclamation、Renovation of river floodplains and grasslands, and sandy land management in northern Shaanxi and many other projects，A total of 300,000 acres of land have been rehabilitated，Effectively guarantees the land demand for urban development and key project construction。These practices of Shaanxi Land Construction have been recognized by many parties，Many experts、The academicians all spoke highly of it after the inspection and research。

Vice President of the International Ecological Society、Fu Bojie, academician of the Chinese Academy of Sciences, has long-term follow-up research on ecological land consolidation，Go to Shaanxi Land Construction several times every year to guide land consolidation work。He said: “Shaanxi Land Construction has provided strong technical support for land consolidation through land engineering research，In Mu Us Sandy Land、Loess hills and ravine area、Weibei Nuangyuan District is based on regional ecological environment characteristics，Using a variety of different land consolidation technology models such as sandstone sand fixation and land reclamation technology，Constructed a reasonable landscape pattern，Really achieve the economic benefits of land utilization through land consolidation projects、Social benefits and ecological benefits integrated to a new level，To achieve the construction of a harmonious ecological environment、The purpose of promoting sustainable development。”

Chinese Academy of Engineering Maozhi、Academicians such as Sun Jiulin also believed that after visiting Shaanxi for many times to guide the construction work，“This is a land consolidation model that conforms to the laws of scientific development”。

Don’t forget your original intention，Fang De always。The land system of Shaanxi Province insists on ecologically renovating land through scientific and technological innovation，Years of exploration，Accumulated rich experience，Laid the foundation for the sustainable utilization of land resources in Shaanxi Province。

Nanniwan model，Promising prospects。With the continuous advancement of urbanization，The share of cultivated land occupied by construction continues to increase，The task of promoting a balance between farmland occupation and compensation is becoming increasingly important。On the one hand, we must protect cultivated land like we protect giant pandas，At the same time, more cultivated land must be created through land transformation and improvement projects。Across the country，There is still a lot of land that needs to be transformed like Nanniwan，The Nanniwan project is a model，They rely on technological innovation to renovate dafabet casino mobile appthe land、Practice to improve the ecological environment，Worth attention and reference。