烤烟新品种KRK26氮肥适宜用量研究

为研究施氮量对烤烟生长发育、产质量以及抗病性的影响,对烤烟品种KRK26设计5个施氮水平进行田间比较试验。结果表明：随着氮肥用量的增加,KRK26品种的长势表现渐好,烟叶产量也表现出逐渐增高的趋势;然而烤烟产值随施氮量的增加呈现先升后降的趋势。总的来看,烤烟品种KRK26以施氮量100 kg/hm2左右为佳,产值最高。

Study on Optimal N Fertilizer Rate of New Flue-cured Tobacco Variety KRK26

Field experiment with 5 different N application rates was conducted with new tobacco variety KRK26 as material to study the effect of N application rates on growth and development, yield, quality and disease resistance of flue - cured tobacco. The results showed that the growth vigor was improved and the yield was increased with the increment of N appli- cation rates, while the output value showed the increase - decrease trend. So the optimal N application rate for KRK26 was about 100 kg/hm^2.