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How many kilograms of nitrogen can be fixed in one mu of soybean?

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, How much nitrogen can be fixed in one mu of soybeans? The field experiment showed that 1 mu of soybean could fix about 8 kg of nitrogen, which was equivalent to the application of 18 kg urea. Because soybean has symbiotic nitrogen-fixing rhizobia, through the role of rhizobia, it can fix gaseous nitrogen in the air, so it is general.

How much nitrogen can be fixed in one mu of soybeans?

The field experiment showed that 1 mu of soybean could fix about 8 kg of nitrogen, which was equivalent to the application of 18 kg urea. Because soybean has symbiotic nitrogen-fixing rhizobia, it can fix gaseous nitrogen in the air through the action of rhizobium, so it is generally unnecessary to apply nitrogen fertilizer. It is estimated that one mu of soybean rhizobia can convert nitrogen in the air into nitrogen that can be used by plants every year, which is about the same as that in 30kg ammonium sulfate.

2. Application technology of soybean rhizobium

The use of rhizobium in soybean production is a mature and widely used technology, which can greatly improve the nitrogen fertilizer needed in soybean production and supply sufficient nitrogen elements. There are two types of soybean rhizobium: liquid and solid, solid rhizobium is used by seed dressing or soil application, liquid rhizobium is used by seed cleaning, and soybean rhizobium can also be added when seed coating. However, attention should be paid to the matching between coating agents and rhizobium strains, not because of the efficacy of planting one season to inhibit the activity of rhizobium for many years. We have been using rhizobium as an important technology to resist continuous cropping and increasing yield of soybean, and have achieved certain results.

 
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