生育中期增施磷钾镁肥对烤烟抗病性的影响

Impacting of Increased Phosphorus and Potassium and Magnesium Fertilizer on Tobacco Disease Resistance in the Mid-fertility

采用4种不同的施肥方法,对烟草品种云烟87进行植物学性状、断叶数、抗病性的调查,结果表明:增施磷钾镁肥300 kg/hm2处理在烤烟的植物学性状、断叶数、青枯病、TMV的表现和抗病性均优于不增施肥料对照和其他处理;增施磷肥300 kg/hm2、增施硫酸钾300kg/hm2、增施磷钾镁肥300 kg/hm2的处理对气候斑点病的抗病性表现差异不大,但仍然明显优于不增施肥料对照。在烤烟的生育中期增施肥料磷钾镁肥有利于烤烟云烟87断叶数的减少和抗病性的增强。

Using four kinds of different fertilization methods,surveying varieties of tobacco Yunyan 87 on the botanical traits,the number of broken leaf and the disease resistance,the results showed that,the performance and disease resistance of increasing phosphorus,potassium and magnesium fertilizer 300 kg/hm^2 treatment was better than CK and other treatments on the botany traits,the number of broken leaf,the bacterial wilt,and the TMV.Increasing phosphorus fertilizer 300 kg/hm^2,increasing potassium fertilizer 300 kg/hm^2 and increasing phosphorus,potassium and magnesium fertilizer 300 kg/hm^2 treatment had little difference in climate spots resistance performance,but were much better than CK.Increasing phosphorus,potassium and magnesium fertilizer can help reducing the number of broken leaf of Yunyan 87 and enhancing disease resistance in the mid-cured tobacco growth.