肥料增效剂对浏阳烟区烤烟生长发育与产量产值的影响

摘要

A field experiment was conducted to study the effect of fertilizer synergist on growth and development, yield and output value of flue-cured tobacco with K326 as material in Liuyang tobacco area, and the results showed that under con-dition of N 120 kg/hm2 , application of fertilizer synergist could prolong growth duration of flue-cured tobacco, improve agronomic traits of flue-cured tobacco, such as plant height, stem circumference and distance between nodes, and so on, and significantly increase area of the biggest leaf. Fertilizer synergist could significantly increase yield and output value of flue-cured tobacco by 8.57% and 5.43% respectively, while the yield and output value of treatment of N 120 kg/hm2 and fertilizer synergist could not reach the level of treatment of N 150 kg/hm2.%以烤烟品种K326为材料，通过大田试验研究了肥料增效剂对湖南浏阳烟区烤烟生长发育、产量与产值的影响。结果表明：施N 120 kg/hm2条件下，增施肥料增效剂能推迟烤烟成熟期，改善烤烟株高、茎围、节距等农艺性状，显著提高烤烟最大叶面积；肥料增效剂能使烤烟产量与产值显著提高，增幅分别达8.57%和5.43%，但施N 120 kg/hm2+肥料增效剂处理的产量与产值达不到施氮150 kg/hm2处理的水平。