不同氮肥施用量对云85烤烟生长发育及产量与质量的影响

Effects of Different Nitrogen Application Rates on Growth,Development,Yield and Quality of Flue-cured Tobacco Yun 85

为明确烤烟云85的最佳施氮量,通过田间小区试验研究了不同施氮量对烤烟品种云85农艺性状、经济性状的影响。结果表明,在一定施氮量范围内,随着施氮量的增加,烤烟的株高、茎围、节距、产量、产值、中上等烟比例均有所增加。在纯氮量为81.75 kg/hm^(2)时,烤烟综合表现最好。因此,在弥渡地区种植烤烟云85纯氮施用量以81.75 kg/hm^(2)为最佳。

In order to clarify the optimal nitrogen application rate,the effects of different nitrogen application rates on the agronomic and economic characteristics of flue-cured tobacco variety Yun 85 were studied through field trials.The results showed that in a certain range of nitrogen application rate,with the increase of nitrogen application rate,plant height,stem circumference,pitch,yield,output value,and the proportion of medium and upper tobacco all increased.When pure nitrogen content was 81.75 kg/hm^(2),the overall performance of flue-cured tobacco was the best.Therefore,the optimal nitrogen application rate for tobacco planting of Yun 85 was 81.75 kg/hm^(2) in Midu.