1. Primitive landform

Land resources have been severely damaged, and the phenomena of desertification, alkalization, and salinization of land are becoming increasingly severe, leading to a significant decrease in the self-regulation ability of agricultural ecological environment and the disruption of natural ecological balance.

2.  Soil condition after improvement

After the first year of improvement, engineering measures such as field leveling, application of chemical amendments combined with land rotary tillage, and horizontal pulping were taken to reduce the degree of soil salinization and pH value in the project area. Organic matter materials were applied to increase soil organic matter content and improve soil fertility; The coverage rate has significantly increased.

After the second year of improvement, after testing, all values significantly increased, improving the water and fertilizer retention capacity of cultivated land and effectively increasing crop yields.

3、Technical route

4.  Technical principles

1）Soil improvement: Improvement measures include the application of soil amendments and active soil conditioners.

The mechanism of action of soil amendments:

(1) Significantly increase soil organic matter and nutrient content

(2) Continuously reducing soil pH and alkalinity

(3) Quickly promote soil colloid aggregation

The mechanism of action of active soil conditioner:

(1) Promote the formation of soil aggregate structure, strongly activate soil, and balance soil acidity and alkalinity

(2) Significantly increase soil activity and effectively prevent dead seedlings and rotting trees

(3) Effectively degrade pesticide, fertilizer, and herbicide residues, and improve fertilizer utilization efficiency

(4) Effectively improve the ability to resist diseases, droughts, floods, heat, frost, and premature aging

2） Soil fertility fertilization: mainly involves the application of stable organic materials and multifunctional nutrient regulating substances, with the core being to increase soil organic matter and effective nutrient content.

(1) Stable organic materials are selected from high-quality powdered organic matter and other materials. Through the interaction effect with amendments, it can affect soil particle structure, microbial population and activity, soil fertility and buffering capacity, etc., which plays a decisive role in improving crop growth and yield.

(2) Organic matter can effectively promote the formation of soil aggregate structure. Promoting the survival of soil microbial agents, enhancing soil fertility and water retention capacity, can effectively achieve the formation of the cultivated layer in saline alkali soil, promote soil "three-phase" balance, effectively improve soil porosity and permeability, and improve soil structure. It is an important substance for preventing soil compaction.

5.  Implementation plan

1） Water conservancy field engineering construction

Firstly, plan and design the entire area, focusing on the soil characteristics of saline alkali land that are easily soluble in water and prone to cracking when dry, to facilitate field management and modern agricultural machinery operations. Adopt a single row and single irrigation design to ensure smooth water supply and drainage, reduce subsequent maintenance, and meet the needs of rice cultivation. The company has developed a specialized sleeve type water hose, which completely solves the problem of water flushing on the channel, avoids channel collapse caused by the solubility of saline alkali soil in water, reduces water evaporation, reduces water consumption, and reduces manual input for water observation.

2）Soil improvement

The base is a typical heavy soda saline alkali land. After using specialized amendments, the pH value and salt content significantly decreased, the soil organic matter increased, the physical and chemical properties of the soil were changed, the planting layer was diluted, and the rice growth index range was achieved.

3） Precision fertilization

Conduct comprehensive soil analysis on the base, use modern IoT technology to detect and upload data on rice plants during their growth process, analyze the nutrient requirements for rice growth, and apply precise fertilizers to ensure yield without wasting fertilizer.

4）Organic rice and ecological green planting and breeding integrated technology

Improving soil is suitable for rice cultivation, while further improving saline alkali land through rice cultivation.

(1) Rice seedling cultivation adopts a soilless seedling cultivation method, which eliminates the damage of excavating the seedbed soil to other soil surfaces. At the same time, there is no soil in the substrate, only natural minerals and decomposed straw that have been treated at high temperatures, which prevents the occurrence of grass seeds and soil borne diseases. Organic fertilizers and additional microbial agents are used as fertilizers, and no herbicides or pesticides are applied throughout the process.

(2) The prevention and control of weeds, pests, and diseases in some green fields adopts drug control, implemented in accordance with national standards, and adopts a combination of duck and crab farming to establish a green ecological chain. Ducks and crabs are used for biological weed control and pest control, and pure biological agents and microbial agents are used for disease prevention and control, avoiding the use of pesticides.

(3) The use of organic fertilizer for soil testing and formula fertilization involves the application of a large amount of organic fertilizer during the improvement and planting process, which enhances soil fertility without causing pollution and is beneficial for long-term healthy and stable development.

5）Variety testing

By utilizing the excellent variety resources in Jilin Province and collaborating with the team of Academician Yuan Longping, more than 40 rice varieties were experimentally planted to provide excellent varieties for future development.

6） Intelligent improvement

By utilizing integrated application computer and network technology, Internet of Things technology, audio and video technology, and big data technology, a set of intelligent management methods such as agricultural visualization remote diagnosis and control, disaster warning, etc. has been established, which integrates contingency plans, videos, images, geographical locations, and hardware equipment between channels. Through the integration of software and hardware products and the comprehensive application of multiple technologies such as information collection, transmission, processing, and release, a smart improvement mode has been achieved, which realizes the automation and intelligence of saline alkali land improvement and improves the management efficiency of agricultural production.

6.  Improvement effect

1）Comparison of indicators before and after improvement:

(1) Significant decrease in soil pH and total salt content

(2) The organic matter content in the soil has significantly increased, and the soil fertility continues to recover

(3) Significant improvement in nutrient indicators such as total nitrogen, available phosphorus, and available potassium in the soil

(4) The soil was not suitable for planting before improvement, and there was basically no yield. After improvement, it can reach a grade of 10 arable land.

2） Other indicators

After testing by a third-party organization, the improved soil meets the requirements of crop growth for soil physical and chemical properties, and does not cause pollution to the soil and environment.

The improved soil heavy metal detection indicators fully comply with the basic limit standards of the National Soil Environmental Quality Standards GB15618-2008 for agricultural land and GB15168-2015 for farmland soil environmental quality standards. 

7.  Improvement and innovation points

1） Through the implementation of the integrated technology model for improving the spatial-temporal fertilization, an integrated technology system based on multi-objective optimization has been created for rapid fertilization and capacity enhancement of saline alkali land. A symbiotic system of "water resource balance irrigation and drainage coordinated salt discharge crop production optimization agricultural capacity enhancement" has been established, providing a replicable and easy to promote technology model for the improvement and efficient utilization of soda saline alkali land.

2.）Improving products can reduce the harm of fluoride in soil and rice while lowering pH, reducing alkalinity, and promoting colloid aggregation.

8.  Conclusion

Saline alkali land improvement is the transformation, development, and utilization of saline alkali land resources, which will bring enormous social, economic, and environmental benefits to society. Utilizing our company's saline alkali land improvement technology for soil improvement, land leveling, scientific planning, and improved infrastructure, the improved soil pH value, total salt content, and organic matter content are key indicators suitable for local crop cultivation, and have the conditions for developing modern organic agriculture production without causing pollution to the soil and environment. And it can achieve governance, success, and high yield in the same year, with mature technology, considerable benefits, replicable and promotable, and broad application prospects.

9.  Other successful cases

- Subsequent Soil Fertilization and Soil Fertility Project of Land Development and Consolidation Project in Longmu Town

-Yongxing Village Land Consolidation Project in Anguang Town

- Da'an Niuxin Taobao Reed Field Land Consolidation Project (Phase II)

-Land Consolidation Project in Dongsheng Village, Sheli Town

-Comprehensive improvement project of land reclamation and ecological restoration linked to the increase or decrease of Dagangzi Town

-Comprehensive Land Improvement Project in Xinping'an Town