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Detailed Explanation of Key Technical Points for Applying Soybean Rhizobia

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The use of rhizobia in soybean production is a mature and widely used technology that can substantially enhance the soybean plant's own nitrogen-fixing capacity during the growing period, supplying sufficient nitrogen for soybean production needs. Soybean rhizobia come in two formulations: liquid and solid. Solid rhizobia are applied by seed dressing or soil application. Liquid rhizobia are used by seed soaking. Soybean rhizobia inoculant can also be added during seed coating, but care must be taken that the coating agent and the rhizobia inoculant are compatible with each other, and that the activity of the rhizobia is not inhibited by the efficacy of the seed coating agent. One

The use of rhizobia in soybean production is a mature and widely used technology that can substantially enhance the soybean plant's own nitrogen-fixing capacity during the growing period, supplying sufficient nitrogen for soybean production needs. Soybean rhizobia come in two formulations: liquid and solid. Solid rhizobia are applied by seed dressing or soil application. Liquid rhizobia are used by seed soaking. Soybean rhizobia inoculant can also be added during seed coating, but care must be taken that the coating agent and the rhizobia inoculant are compatible with each other, and that the activity of the rhizobia is not inhibited by the efficacy of the seed coating agent.

I. Yield and Efficiency Increase

According to field demonstration results, applying rhizobia to soybeans can increase soybean yield by more than 10%, while increasing soybean protein content by 2% and crude fat content by 1-2%, and increasing net income per mu by 40-50 yuan.

II. Key Technical Points

1. Select suitable soybean rhizobia varieties. Collect the main soil types in soybean production areas, conduct soil-rhizobia matching trials, and screen soybean rhizobia varieties with strong activity, good effects, and adaptation to local soil and climate.

2. Use appropriate application methods. According to the formulation of the soybean rhizobia, solid inoculant is applied by seed dressing or after granulation in hills together with soybean seeds and fertilizer; liquid inoculant is applied by

seed soaking. Soybean rhizobia inoculant can also be added during seed coating, but care must be taken that the coating agent and the rhizobia inoculant are compatible with each other, and that the activity of the rhizobia is not inhibited by the efficacy of the seed coating agent.

3. Reasonable dosage. When using inoculant for seed dressing, the dosage is 0.5 kg per mu; when the inoculant is granulated and applied in hills together with soybean seeds and fertilizer, the dosage is 1-2 kg per mu; when using liquid inoculant for seed soaking, the dosage is 0.5 kg; when seed coating is used, the dosage is based on the dosage required by the coating agent.

Soybean rhizobia is a living microbial preparation. During storage, transportation, and use, avoid excessively high or low temperatures; at the same time, it must not be mixed with fungicide-type pesticides.

III. Suitable Regions and Scope

In China's major soybean production areas of Heilongjiang, Jilin, Liaoning, Inner Mongolia, and the Huang-Huai-Hai region, soybean rhizobia can be widely used. From 2002 to 2004, demonstration and extension were carried out on 8 million mu in the soybean production areas of Liaoning, Jilin, Heilongjiang, and Inner Mongolia, achieving very good results and showing broad application prospects.

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