Effects of different fertilization methods and new fertilizer matching on rice quality,economic benefits and nitrogen efficiency in Chaohu Lake Basin
In order to explore the influence of different fertilization methods and new fertilizers matching on rice production under the condition of simultaneous deep fertilization of machine transplanting,five distinct types of compound (mixed) fertilizers were selected,and a field experiment was conducted with six treatments:no fertilization (CK),one base and two topdressing of ordinary compound fertilizer (T1),one base and two topdressing of rice for-mula fertilizer (T2),one base and one topdressing of synergistic controlled-release fertilizer (T3),one-time fertiliza-tion of slow-release blended fertilizer (T4),and one-time fertilization of inorganic wrapped compound fertilizer (T5).The effects of different fertilization methods and new fertilizers matching on rice yield,rice quality,nitrogen fertiliz-er utilization rate,economic benefits and the risk of nitrogen and phosphorus loss on field surface were analyzed.The results showed that compared with one base and two topdressing of ordinary compound fertilizer (T1),the protein content of rice was significantly increased by the four new fertilizer treatments (T2,T3,T4 and T5),the nitrogen ferti-lizer utilization rate was increased to more than 50%,and the nitrogen fertilizer utilization rate of each treatment in-creased by 35%,68%,75% and 48%,respectively.At the same time,the new fertilizer treatments significantly re-duced the nitrogen concentration of field water and reduced the risk of nitrogen loss.Compared with ordinary com-pound fertilizer,rice formula fertilizer could significantly reduce the chalk whiteness and chalk white grain rate of rice,and improve the appearance quality of rice.The one-time fertilization treatment of slow-release blended ferti-lizer could increase rice yield,which increased the yield by 30% compared with the one-base two topdressing treat-ment of ordinary compound fertilizer,saved production cost by 5442 yuan·hm-2,and increased the total income by 12437 yuan·hm-2.In general,under the condition of simultaneous deep fertilization of machine transplanted seed-lings,the one-time fertilization method matched with the slow-release blended fertilizer rice production method is conducive to saving production costs and increasing rice yield,which is the best planting mode to improve rice effi-ciency.The one-time fertilization method matched with slow-release blended fertilizer can be applied to rice produc-tion and promotion in Chaohu Lake Basin,which is of great significance to the efficient production of rice and pro-vides a theoretical basis for the green and high yield of rice in the Chaohu Lake Basin.
one-time fertilizationnew fertilizersrice qualityeconomic and environmental benefitsnitrogen use efficiency
万方数据
维普
