The picture shows the transformation of wasteland into fertile farmland in the Weinan section of the Yellow River this year，Rice harvest in modern agriculture project area。 

"The east coast is connected in a line，The West Bank is in ruins。”Facing the West Bank of the Yellow River that urgently needs to be renovated，Wang Shuanhu, director of the Shaanxi Provincial Department of Water Resources, is very anxious。Shaanxi Weinan section on the west bank of the Yellow River，Due to lack of comprehensive management，Disaster prone and frequent，People along the coast live on old cliffs several kilometers offshore，Watching the cultivated land being destroyed every year，As water advances and people retreat...according to the national "Yellow River Basin Comprehensive Plan"，With the support of the Yellow River Water Conservancy Commission of the Ministry of Water Resources，Shaanxi Province firmly adheres to the concept of comprehensive management of the West Bank，Implementing the land ecological environment restoration and management project on the west bank of the Yellow River in the Weinan section from the dock outside Yumenkou in Hancheng City to the mouth of the Weihe River。The project has been in progress for more than a year，The former quicksand beach of the Hancheng test section，Farewell to flooding，Become an ecological pastoral connected with fertile fields。The destroyed farmland has been restored，Wetland appears，The muddy water turned into clear water。

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Prevented floods and transformed barren beaches

Flood disaster，Land salinization，“Sitting on the Yellow River with no water to eat”，It is a true portrayal of the production and life of the villagers in Lingao Village, Longmen Town, Hancheng City。The river course within Hancheng is more than 40 kilometers long from Xiayukou to the point where Zhichuan River enters the Yellow River，Due to the frequent swings of the river bed，Causing serious floods on the west bank of the Yellow River，It also caused severe lateral erosion along the yellow zone，Bank collapse and field destruction occur from time to time。Wang Yunzhang, deputy mayor of Hancheng City, said，The main stream of the Yellow River moves westward，Flooding，Restricting local economic and social development。

The total length of the Weinan section on the west bank of the Yellow River is 132.5 kilometers，Involving Hancheng、Heyang、Dali、Four cities and counties dafabet.com mobilein Tongguan，Severe land salinization。“Farmland cannot be planted，The crops are not harvested，It’s been a hard life。”Reflections from the villagers of Lingao Village，Most of the cultivated land in the village is close to the Yellow River，The beach soil has strong water permeability、Intolerant of drought，Many are saline-alkali lands。

To solve the problem，Need to work together on flood control and comprehensive ecological management。

Carry out targeted flood control and renovation。The flow of the Yellow River is relatively fast，Large flushing volume，The hydrogeological situation is complex，Shaanxi Land Engineering Construction Group is based on the control plan approved by the Yellow Committee，Adopt the construction of the main control project to directly cross the river to intercept the main stream，And built a flood channel。Liu Wangfeng, head of Shaanxi Construction Yellow River Branch said，Flood control engineering measures，Focus on comprehensive management，Prevented flood threat，Effectively controlled soil erosion。

Carry out ecological remediation in a predictive manner。Said by Dr. Zhang Yang from the Key Laboratory of Degraded and Unused Land Remediation Engineering of the Ministry of Land and Resources，Soil reconstruction of the land ecological environment restoration project on the west bank of the Yellow River，Intended to restore the ecological function of the soil。The guarantee of technical means is achieved through a series of engineering measures: leveling of soil foundation，Basic soil rolling，The bottom layer of plain soil is compacted，Cultivation layer covering soil，beating and leveling。"This way，Improved soil structure，Effectively solve the problem of low soil organic matter content in beach land、The problem of difficulty in retaining water。”

according to calculation，After project completion，Not only can it improve the flood control and discharge capacity along the Yellow River，At the same time, we restored 150,000 acres of cultivated land in Shaanxi Province。Based on the experimental section in Hancheng，The Provincial Land Engineering Construction Group will also carry out land management within 132 kilometers of the four counties and cities along the Yellow River in different regions、Comprehensive development of dam construction and modern agriculture。Land Ecological Environment Restoration and Management Project on the West Bank of the Yellow River，Construct and improve the Yellow River control and guidance project from Yumenkou in Hancheng City to Sanhekou in Dali County，And plan a river with bottom width ranging from 30 meters to 70 meters on the west bank of the original river bed、3 meters deep flood channel，To protect wetlands、The main purpose is to improve the ecological environment in the region，Total construction scale 1 million acres，Investment estimate: 38 billion yuan。

Liu Wangfeng said: “Through 14 comprehensive improvements including modern agriculture，Will completely change the ecological decline on the west bank of the Yellow River。”

The cultivated land damaged by the flood has been turned into river floodplain and unused land，Now restored into part of arable land and ecological land，Whether it conflicts with the relevant provisions of the Flood Control Law？Li Ling, deputy general manager of Shaanxi Land Construction said，As per regulations，The wasteland of the river is a flood storage and detention area，Related construction is not allowed。The planning coordinates of flood control embankments and control projects are set according to the national red line on the main stream of the Yellow River，Approved by the Yellow River Water Conservancy Commission。Beyond the levee is the flood storage and detention area，There is damaged land and unused land within the levee，Carry out relevant ecological restoration，Legally allowed，Systematically feasible。

What’s wrong with wasteland management?

Rice is planted on the tidal flats, and the muddy water turns into clear water

Soil organic reconstruction technology，Comprehensive dafabet casino mobile appimplantation of the land ecological environment restoration and management project on the west bank of the Yellow River，An unexpected effect occurred。

One effect is，Good crops grew on the deserted beach。Project management area in late winter，As far as the eye can see is the lush green rapeseed。Liu Wangfeng walks away，Introduction: "Rape is planted on the next crop after this year's rice harvest，Next spring，More than 10,000 acres of rapeseed flowers here，Definitely makes people drunk。In the experimental section of Hancheng，Planting rice can better improve sandy soil。”Currently，High-standard paddy field 1 has been built.20,000 acres，The average rice yield per mu is 800 kilograms，Wetland Park 700,000 square meters，660,000 square meters of stagnant water surface，“The Land of Fish and Rice” is a dream come true in Guanzhong。

"Wang Zhiliang planted this rice，This is a hard skill。”Wang Zhiliang was praised by his colleagues，He is a good expert in rice cultivation in the Yellow River in two years，Known as “Rice Expert”。At that time，This master’s student who graduated less than a year ago，Bachelor of Science Plant Technology，Master's degree in ecology，While in school, I studied wheat and corn with my tutor。“I have never been exposed to rice cultivation before。"Wang Zhiliang said frankly。Is rice suitable for planting in wasteland，How to plant，All are unknown。Looking at the vast Yellow River，Continuous wasteland，Wang Zhiliang and a group of young people who are interested in rice did not back down。

They brought loess to build the plow base and tillage layer for crop growth，Several processing methods: 10 cm，20cm，30cm，40cm，There is still a field that is not covered with soil，A layer of plastic film was placed on the sand，Waterproof and water-retaining。Soil improvement，Sowing seeds in the experimental field，A few months later, good news came from the Shaanxi Land Engineering Research Institute: the theoretical yield measured by sampling，The average theoretical production capacity per mu reaches 1,000 catties。

Wang Zhiliang said: "Reference information，Supply water and fertilizer in place，Slowly the crops are getting better，Everyone has a clear idea。”Land leveling and organic soil reconstruction activities are carried out simultaneously，Shaanxi Land Construction Scientific Transformation and Restoration of Land、Rebuilding fertile land，Convert poor soil into an infiltration layer、Plow the bottom layer、Good paddy land structure in the cultivation layer，Effectively solve the problem of low organic matter content in sandy soil、The problem of difficulty in retaining water。

Purchase seeds、Mechanical、Fertilizer、Pesticides...from the Northeast、Ningxia、Seed selection in Henan and other places，Xinxiang and other places with the same latitude and conditions in Henan are rice areas，Shaanxi Research Institute developed a seed selection plan based on accumulated temperature and other data；There is one aspect of farm work in the field that I can’t keep up with，The output will come down immediately”。It rains every day in early June，Seedlings were once delivered by forklift，It’s the farming season。

"Yuyangpeng" and "Yangshangkeke"...as the project progresses，Everyone has found his or her own niche in growing rice，The hard work condensed in the harvest month of October。Except rice，Also developed lotus pond and fish pond。According to introduction，After the completion of the Weinan section reconstruction project，650,000 acres of rice fields and lotus root wetlands will be built，150,000 acres of new paddy fields。

Another effect is，The ecology has regained its vitality。Previously，There are not many microorganisms in the Yellow River，The bird is out of food。Now there are paddy fields to adjust the microclimate，Formation of new local biological chain。More and more waterbirds、The frog came to the field，Presenting a scene of Guanzhong Jiangnan。What impressed the reporter the most was the change in water quality here: the past，This is the dafabet loginthird type of water、Four types of water，Now，Yellow River water is filtered through the repair layer，What seeps out is a type of water，You can drink it directly after you scoop it up。Wang Yunzhang said，Test section project，Can produce 40,000 cubic meters of clean water every day，Introduction to urban tap water system，Blessed the people of Hancheng。

Is it effective in the long term?

Fight floods, protect farmland, and escort land projects

The water flow of the Yellow River is getting smaller in winter，But still rolling。The flood control embankment has been built，The wasteland has been improved，The water quality has become clear，Can this good situation be maintained?？

The water in the Yellow River is unstable，Whether flood control embankments and control projects are adequate for flood control is a challenge。

gantry，According to legend, it was the place where Dayu controlled floods，The Yellow River rushes out of the mouth，Come down the gantry，Rush towards Shikawa，After leaving Hancheng Longmen Gate，The narrow canyon channel that is 100 meters long suddenly widens to a river beach of more than 4 kilometers，Because the terrain is flat，The Yellow River swings frequently，A wandering river channel of more than 10,000 meters is formed，Performing "Thirty Years of Hedong，Thirty Years of Hexi”。

There is a special uninvited guest on the Yellow River beach: Peach Blossom Flood。Peach Blossom Flood is also called Spring Flood，Refers to the Yellow River in Ningxia、Inner Mongolia River Section 2、Spring floods caused by melting ice in March。Spring returns to the earth，Spring tide rising，The water is not gentle at all。March 14，The Peach Blossom Flood is here as expected: it rose 1 meter in less than 20 minutes，A rise in water level of 1 meter is equivalent to an increase of hundreds of thousands of cubic meters of water flow per second。The problem of flood prevention is not solved well，Direct threat to local people’s lives and property。

To this，Li Ling is confident: "Floods can be prevented in the short term，Not afraid of floods for a long time。”Flood control levee and control project of the Yellow River West Bank Comprehensive Management Project，Constructed in strict accordance with the plan approved by the Yellow River Water Conservancy Commission of the Ministry of Water Resources。This summer，Main rivers across the country have entered flood season，Facing the surging Yellow River，Shaanxi Construction Group’s control project from the initial design stage，Consider flood control and water diversion，Built a flood storage and detention area，Every 800 meters of the project will leave a 200-meter return opening，The main project is divided into 4 sections at Huiyukou，Every few hundred meters，There is an ups and downs，Safe floods achieved。

The deserted beach has turned into fertile farmland. Whether it can be preserved is a challenge.

“The core still depends on the quality of the dam。" Liu Wangfeng said，"Once a piping surge occurs in the dam、Leakage、Collapse，Even directly overwhelmed，Then there’s no need to talk about it。”The flow of water upstream of the dam is rapid，The greatest pressure on the dam body，Prone to water seepage、Pipe surges and cracks，When the water level is high, water may flood the plain。To ensure the quality of the dam body，Reduce flushing pressure，About 500 meters upstream of the control and guidance project，A diversion channel was excavated，Divided，Ensure flood prevention safety。

How to maintain vitality in restored farmland？The key is to use technical means to organically reconstruct the soil，Let the wasteland become a safe place，Turn muddy water into clean water。Introduced by Wang Junshang, head of Shaanxi Construction Comprehensive Development Company，Original cultivated land in the area、Tidal flats and saline-alkali lands，Through soil organic reconstruction technology，Construct a high-yielding paddy field；Planting crops such as rice and lotus root，In turn, regulate the ecology，Keep the fertile land。This composite project involves water conservancy、Transportation、Cross application of environmental protection dafabet mobile appand other engineering technologies and measures。

After inspecting the West Bank Project of the Yellow River with Dr. Nisha Agami, Director of the Water Resources Policy Center at Stanford University，Fu Bojie, academician of the Chinese Academy of Sciences, said，Organic reconstruction of soil is the core technology of land engineering，It is also a prerequisite for ensuring land quality；Land reconstruction，Enable efficient and sustainable use of land resources。