Abstract:

Tai Lake basin is one of the important market grain production bases. The aim of this paper was to find the best way of nutrient management in the rice-wheat rotation system in Tai Lake basin by analyzing of the current fertilization situation. In Tai Lake basin, the main problems were summarized as: large differences in the rate of fertilization were found between the farmers, excessive and insufficient rate were coexisting. Nutrients input were in misbalance. Farmers were more preferred to use nitrogen fertilizer than phosphate and potassium fertilizer, especially potassium fertilizer, which was no more than 20% of nitrogen fertilizer. The fertilizing time was found unreasonable, which was not consistent with crops growth. In conclusion, application, improvement and perfection of the best nutrient management technique was the inevitable way to achieve the consistent increases both in production capacity, economic benefits and in high efficiency in resource utilization and environment protection.