雨养烟田以肥调水技术对群体冠层结构特性的影响

Research on the Canopy Structure by Using Fertilizer to Adjust Soil Moisture in Rained Tobacco Field

以烤烟品种NC89为材料 ,研究了不同施肥对烟株长势、冠层结构及产量的影响。结果表明 :施用腐殖酸、聚丙烯酰胺 ,烟株长势良好 ,叶面积系数大 ,散射光透过率高 ,叶分布均匀 ,形成合理的冠层结构 ;同时 ,可提高烟叶产量 ,改善烟叶质量 ,提高上等烟比例。

The effects of different fertilizers on the tobacco gr owth, canopy str ucture and yield of flue-cured tobacco were studied. The results showed that hum ic acid and polyacrylamide promoted tobacco growth, enlarged the LAI, improved t he transmission coefficient for diffuse penetration, and evened the leaf distrib ution, which formed the rational canopy structure, in the meantime, it improved the yield and quality of tobacco and the ratio of first class of leaf. So it was suggested that humic acid be mixed with polyacrylamide.