spot blight

Study on occurring rule and controlling techniques of spot blight of Gentiana

龙胆草斑枯病发病规律及防治技术研究

Study on Harmless Control Technology of Gentian Spot Blight

人工规范化种植龙胆斑枯病的无公害防治技术

Preliminary researches on spot blight of watercress agricultural department

水芹斑枯病的初步研究

In recent years , Gentiana spot blight is the most important disease of Chinese herbal medicines gentian .

龙胆草斑枯病是近几年中药材龙胆草的最主要病害。

From 1992 to 1994 , the auther had made systematic observations , investigations and experiments on spot Blight of watercress .

1992年～1994年，笔者对水芹斑枯病进行了系统观测、调查及试验，结果表明：病菌以菌丝体在种株或病残体上越冬。

Rough gentian leaf blight was caused by Septoria gentianae . Study on occurring rule and controlling techniques of spot blight of Gentiana

龙胆草斑枯病是近几年生产上发生的一种毁灭性病害。龙胆草斑枯病发病规律及防治技术研究

Studies on the Biological Specialization of the Toxin Producing by Brown Spot Needle Blight Fungus

松针褐斑病菌毒素的专化性研究

Significant difference of the ratio of affected needles among families was found and excellent effect of the resistant breeding against brown spot needle blight was achieved .

结果表明，针叶感病率性状在各家系间呈极显著差异，抗病选育具有良好的效果。

It causes spot , blight of leaves , rot of shoot . Leaf Spot ( Blight ) of Kentucky Bluegrass in Beijing

此病主要为害叶片造成叶斑和叶枯，但也可造成茎腐和花枯。北京草坪早熟禾叶斑（枯）病研究

Studies on the damage of faba bean chocolate spot , ascochyta blight and its economic threshold

赤斑病、褐斑病对蚕豆的为害分析和经济阈值的探讨

The flowers and trees rust , downy mildew , black spot disease , leaf blight , branch blight disease , powdery mildew etc. were significantly controlled by this fungicide .

对花木锈病、霜霉病、黑斑病、叶枯病、枝枯病、白粉病、溃疡病等防效显著。