2012～2013年雪里蕻“2+X”田间肥效试验技术

[目的]为掌握雪里蕻作物氮肥需求量。[方法]在肥东县店埠镇赵岗村,按照省测土配方施肥项目安排的试验方案进行比较试验。通过田间调查和实产分析,比较不同处理对雪里蕻生长、产量的影响。[结果]随着施氮量的增加,单株绿叶数、单产都相应增加,开展度先增后减。当施氮量大于优化氮区施氮量,随着施氮量的增加,产投比减少;而当施氮量低于优化氮区施氮量,随着施氮量减少,产投比减少,优化氮区产投比最高,达30∶1。[结论]该研究可以为改进肥料配方设计、构建作物施肥模型提供数据支持。

Testing Technique of 2 + X Field Fertilizer Efficiency of Potherb Mustard in 2012-2013

The research aimed to master the demand of nitrogen fertilizer of potherb mustard. [Method]In Zhaogang Village,Dianbu Town,Feidong City,according to the testing program of provincial testing soil for formulated fertilization program,the trial was carried out.By the means of field investigation and true yield analysis,the effects of different treatments on the growth and the yield of potherb mustard were compared. [Result]With the increase of the nitrogen application amount,green leaf number of single plant and the yield increased,and the launch rate increased and then decreased. When the nitrogen application amount was greater than that of optimized nitrogen area,with the increase of the nitrogen application amount,the input-output ratio decreased. When the nitrogen application amount was inferior to that of optimized nitrogen area,with the decrease of the nitrogen application amount,the input-output ratio decreased. It was the highest,reaching 30∶ 1 in optimized nitrogen area. [Conclusion]The research could provide the data support for the improvement of the fertilizer formulation design and the establishment of the crop fertilization model.