A method to promote soil carbon sequestration in a corn-wheat rotation system

Abstract

The invention relates to the field of micro-organisme fungicide and soil amelioration, and particularly discloses a method for accelerating soil carbon in the corn-wheat crop rotation system. The method is as follows: in the corn-wheat crop rotation system, after having harvested corn and wheat, shattering and returning to the field the corn straw and wheat straw, spraying the micro-organisme fungicide agent that is capable of accelerating the fermentation and decomposition of straw on the straw surface, and scattering organic fertilizer. After sowing corn and wheat, applying soil conditioner that contains azotobacter, combined with compound fertilizer, and spraying liquid amino acid fertilizer for plant during the growth phase of corn and wheat. The present method can reduce as much as possible the destabilization of soil and accelerate the decomposition of straw using biological bacterium, to guarantee the activity and diversity of micro-organisme in arable soil. The present method uses soil conditioner to regulate soil structure, thereby strengthening soil fertility and accelerating the accumulation of soil carbon.

Description

technical field [0001] The invention relates to the field of microbial bacterial agents and soil improvement, in particular to a method for promoting soil carbon sequestration in a corn-wheat rotation system. Background technique [0002] Carbon dioxide is one of the most important greenhouse gases that cause global climate change. Reducing carbon dioxide emissions and increasing carbon sinks are important ways to slow down the greenhouse effect and its impact on human socio-economic systems and achieve sustainable development. Soil is a huge carbon pool in terrestrial ecosystems, and its changes profoundly affect the concentration of carbon dioxide in the atmosphere. China is the world's largest emitter of greenhouse gases and is facing enormous pressure to reduce emissions. The carbon sink of agricultural soil accounts for 35% of the total soil carbon, which can offset 10-12% of the total industrial carbon dioxide emissions. Agricultural soil carbon The carbon sequestrati...

AI Technical Summary

Problems solved by technology

But for many years, farmers in the Huang-Huai-Hai Plain have only paid attention to nitrogen, phosphorus, and potassium in order to increase yields, resulting in a decline in soil fertility and an imbalance in nutrients.

In addition, the planting structure in each region is single, and repeated cropping year after year has caused soil compaction and a decrease in beneficial microbial flora. Although the rate of returning wheat and corn stalks to the field has increased year by year, the increase in soil organic matter has not been obvious. Currently, more than 60% of the cultivated land in the Huanghuaihai Plain has achieved All the wheat and corn stalks were returned to the field, but the plow layer became shallow and the soil lost its vitality due to the impact of the fineness of the stalks and the specifications of the rotary tillage.