Researchers from the Chinese Academy of Agricultural Sciences announced breakthrough results at a demonstration and field measurement conference for soybean quality improvement and nitrogen fixation green yield enhancement using ARC bio-coupling technology on saline-alkali land at Sifangshan Farm, Beidahuang Group in Heilongjiang Province on October 9th.
The ARC bio-coupling technology (A represents aflatoxin control, R represents rhizobia nodulation and nitrogen fixation induction, C represents coupling synchronous implementation) demonstrated remarkable results in the thousand-mu demonstration area. Expert group field measurements showed that soybean demonstration plots using this pioneering technology from the Oil Crops Research Institute achieved an actual yield of 196.99 kg per mu, representing a 14.3% increase compared to control plots without the technology.
Sifangshan Farm of Beidahuang Group primarily consists of soda saline-alkali soil with pH values generally ranging from 8.04 to 9.11, representing typical mild to moderate saline-alkali land characterized by nutrient deficiency, soil compaction, and low productivity. This year, 1,260 mu of contiguous saline-alkali land planted with soybeans achieved large-scale per-unit yield improvements after applying ARC bio-coupling technology, showing a 47.7% increase compared to the national average soybean yield per unit. The technology also demonstrated high-efficiency nodulation and nitrogen fixation characteristics while improving soil structure in saline-alkali areas.
According to the introduction, addressing the dual challenges of source-level aflatoxin control and enhanced nodulation nitrogen fixation in soybeans and peanuts, the team led by Academician Li Peiwu from the Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences conducted over 20 years of continuous research. They discovered the bio-coupling effect of soil source-level aflatoxin control for quality improvement and safety assurance, while simultaneously inducing nodulation nitrogen fixation for fertilizer reduction and yield increase. This led to the invention of ARC bio-bacterial agents and the pioneering development of ARC bio-coupling technology for soybean and peanut quality improvement, nitrogen fixation, and green yield enhancement.
The technology demonstrates significant "two fixations, three increases, five reductions" effects: nitrogen fixation and carbon fixation; increased yield, efficiency, and safety; reduced toxins, losses, fertilizer use, costs, and carbon emissions.
Currently, ARC bio-coupling technology has been demonstrated and applied in China's major soybean and peanut production areas for five consecutive years, breaking through the bottleneck of microbial bacterial agents being limited by regional, varietal, and environmental constraints. Application results show that under 20%-40% nitrogen fertilizer reduction conditions, soybeans increased yield by 15%, peanuts by 19%, and aflatoxin was reduced by 80% at the source level, demonstrating significant quality improvement and yield enhancement effects.