Effects of different cultivation patterns on nitrogen use efficiency and economic benefit of rice in Chaohu Lake Basin
In order to explore the cultivation techniques of high yield of rice and efficient utilization of ferti-lizer in Chaohu Lake Basin,so as to realize the efficient matching of technology and fertilizer,a field experiment was conducted in the Chaohu Lake Basin.The direct-seeding rice Qiaoliangyou 17 and the transplanted rice Quanxiangyou 19 were used as materials,and three treatments were set up:no fertilizer,ordinary compound ferti-lizer and new fertilizer.The yield,nitrogen use efficiency,rice cost and quality of two rice varieties under different cultivation modes with the same fertilization treatment were compared and analyzed.The yield of direct seeding rice and transplanted rice was the highest,which could reach more than 10000 kg·hm-2.In the treatment of direct seeding rice,the application of common fertilizer (CF) and new fertilizer (IF) could significantly improve the ni-trogen utilization rate of rice.Among them,the application of common fertilizer increased nitrogen accumulation and agronomic utilization rate,while the new fertilizer had a positive effect on physiological utilization rate.In the treatment of transplanted rice,reasonable application of synergistic and loss-control fertilizer could reduce the cost of fertilizer,increase the output value and profit of rice,and the profit could reach 25527 Yuan·hm-2.The application of fertilizers increased the yield of rice under different cultivation methods.Among them,the applica-tion of synergistic and loss-control fertilizers for transplanted rice showed an excellent performance in nitrogen use efficiency and economic benefits,which could be used as one of the new measures for the efficient matching of cultivation techniques and fertilizers in Chaohu Lake Basin.
Chaohu Lake first class protected areadirect seeding riceweight loss efficiencyeconomic benefits
万方数据
维普
