摘要
2013~2016年在甘肃省岷县、漳县、临洮及宕昌地区党参田间调查了党参灰霉病发生状况及为害程度,并在岷县梅川镇本路村进行了党参灰霉病药效防治试验。党参症状表现为叶片、茎蔓、残花和花托大片软腐,上生灰褐色霉层;菌丝褐色,粗壮,分生孢子梗直,有分枝;分生孢子椭圆形、长椭圆形,无色至淡褐色,单胞(9.2~15.6)μm×(6.1~9.8)μm(平均11.5μm×7.3μm)。引起党参灰霉病的病原为灰葡萄孢(Botrytis cinerea)。该病5月下旬开始发病,一年中6月底和9月2个发病高峰,低温、多雨,植株密集、低洼处发生较重。通过田间药剂防治试验,施用10%苯醚甲环唑650倍液和40%嘧霉胺650倍液进行交替防治,效果理想。
Grey mould in Codonopsis pilosula often occurred in the main production area in Dingxi of Gansu Province. The typical symptom was soft rot on leaf,vine,flower and receptacle. Its mycelium was brown and thick; conidiophore straight,branched; conidia ellipse to long elliptical,hyaline to light brown,single-celled,9. 2 to 15. 6 μm × 6. 1 to9. 8 μm（ mean = 11. 5 μm × 7. 3 μm） in size. The pathogen was identified as Botrytis cinerea by morphological characteristics. The disease initially occurs in field in May,morbidity peak was in the last ten days of June and September. The disease is severe under rainy,low temperature conditions,and more heavily in high plant density and ground close areas.10% difenoconazole or 40% pyrimethanil by 650 dilution were suggested to control Codonopsis grey mould.
出处
《草原与草坪》
CAS
CSCD
2017年第2期94-97,共4页
Grassland and Turf
基金
甘肃农业大学自列项目(GSAU-ZL-2015-014)
科技惠民计划(2013Gs620101)资助
关键词
党参
灰霉病
病原鉴定
病害防治
Codonopsis pilosula
grey mould
pathogen identification
disease control
