关键词: 评价, 评价

Abstract:

For nearly a decade, rice production partial nitrogen, light the phenomenon was outstanding in Hongta district, Chunhe Town, under which had become the main limiting factors in high yield. In order to improve the yield of rice, explore scientific fertilization method and through field experiment and soil, plant, grain nutrient analysis indoor, to further research and Chunhe Town of nitrogen, phosphorus and potassium rice yield effect and nutrient uptake laws, improve fertilizer efficiency, increase the economic efficiency. Results showed that: fertilization was an important measure of rice production, and nitrogen fertilizer was Chunhe Town of rice production the main nutrient limiting factors, followed by potash, once again, was P fertilizer. Balanced fertilization conditions could reduce nitrogen losses while effective improve soil K activation and absorptive capacity, N, P, K fertilizer application the utilization rate of increase than 5.6%, which was 3.2%, 54.3%, respectively. Therefore, Chunhe Town rice fertilizers apply in guarantee under the premise of nitrogen, phosphorus and potassium could be improved to reasonable fertilizer utilization ratio of rice production.