不同施肥处理对烤烟生长发育及养分吸收的影响

采用盆栽试验研究了不同施肥处理对烤烟生长发育及养分吸收的影响.结果表明:不同施肥处理对烤烟生长发育及养分吸收的影响存在显著差异.在本试验中,农艺性状及干物质积累量,N、P、K含量和吸收量均以A处理(NPK复合肥+牛粪)最高,其与CK(NPK复合肥)、B(NPK复合肥+秸秆)、C(NPK复合肥+低硼)、D(NPK复合肥+高硼)处理间的差异达到显著水平,烤烟生长发育最优,N、P、K含量与吸收量_达到稳定阈值,分别为1.96%,0.25%,4.82%与5.22,0.65,12.89 mg/plant.施加农家肥和硼肥均使烤烟各器官中硼的含量有所增加,尤以施加高硼的D处理最高.

Effects of Different Fertilization Methods on Growth and Nutrient Uptake of Flue-cured Tobacco

Plant experiment was conducted to study the effects of different fertilization methods on growth and nutrient uptake of flue-cured tobacco.The results showed that significant difference of growth and nutrient uptake of flue-cured tobacco was found among different fertilization methods;Treatment A (NPK+ cattle manure),had the best agronomic characters,the highest dry matter accumulation and concentrations and uptake of N,P and K.The concentrations and uptake N,P and K of flue-cured Tobacco in Treatment A reached to a maximum of stability which were by 1.96%,0.25%,4.82% and 0.65,0.083,1.597g/ plant.The mixed application of NPK fertilizer and cattle manure (treatment A) could evidently increase the growth and nutrient uptake of flue-cured Tobacco.Both supplying farmyard manure and boric fertilizer could increase the concentration of boron in organs of tobacco,especially in D (NPK+ high boron).