Study on the effect of nitrogen reduction and efficiency increase of deep fertilization on rice machine insertion
In this study,we explored the effects of different fertilization rates and fertilization methods on the yield components,stem tillering dynamics and economic benefits of Nanjing 5055 by deep application of slow-release fertilizer on the machine cutting side of rice,so as to explore the fertilization methods suitable for local large growers.The results showed that,compared with the conventional fertilization method,the deep fertilization on the side could effectively improve the utilization rate of fertilizer,seed setting rate,grain number per spike and economic benefits,but reduced the panicle rate;under the same total nitrogen application rate and different deep fertilization rates on the side of slow-release fertilizer,the cost of one-time fertilization was the highest and the yield was the lowest,with the reduction of the amount of slow-release fertilizer,the cost was reduced,the deep application of 420 kg·hm-2 on the side of slow-release fertilizer,the topdressing of tillers and the fertilization mode of compound fertilizer at panicle stage could reach the maximum.
riceslow-release fertilizerside deep fertilizationyieldeconomic benefit
万方数据
维普
