柘荣县太子参块根主要病害发生特点田间调查及分析

Field Investigation and Analysis on the Occurrence Characteristics of Main Diseasesin Root Tubers of Pseudostellaria radix in Zherong County

针对太子参块根病害发生严重的问题,在采收期收集了福建省柘荣县3个乡镇不同生长环境下的太子参块根样品,调查了太子参块根主要病害的发生特点。结果表明:所采集田块的太子参在采收期块根病害发生严重,发生率在3.84%~42.74%,主要以根腐病、紫纹羽病和酸腐病为主。根腐病是城郊乡和楮坪乡太子参块根主要病害,发生率在1.92%~25.22%,占块根病害发生率的28.76%~100%;紫纹羽病仅出现在富溪乡种植地,发生率在0~22.18%,占块根病害发生率的0~78.72%;酸腐病则集中发生在采收后期,发生率为0~6.38%,占块根病害发生率的0~30.13%。同一乡镇同一采收期的太子参,3种病害在水田的发生率均高于山地发生率。太子参块根主要病害的发生特点与其田块性质密切相关,该研究结果可为促进太子参丰收和减损提供理论基础。

In view of the problem that the diseases occurred seriously in root tubers of Pseudostellaria radix,the root tuber samples of Pseudostellaria radix under different growth environments in three towns of Zherong County,Fujian Province were collected during the harvest period,and the occurrence characteristics of the main diseases in root tubers of Pseudostellaria radix were investigated.The results showed that the diseases in root tubers of Pseudostellaria radix in the collected fields were serious during the harvest period,with the incidence rate of 3.84%-42.74%,and the main diseases were root rot,purple root rot and sour rot disease.The root rot disease was the main disease in root tubers of Pseudostellaria radix in Chengjiao Township and Chuping Township,with an incidence rate of 1.92%-25.22%,accounting for 28.76%-100%of the disease incidence in root tubers.The purple root rot disease only occurred in the planting area of Fuxi Township,with an incidence rate of 0-22.18%,accounting for 0-78.72%of the disease incidence in root tubers.The sour rot disease mainly occurred in the late stage of harvest,with the incidence rate of 0-6.38%,accounting for 0-30.13%of the disease incidence in root tubers.The incidence rate of three diseases in Pseudostellaria radix at the same harvest period in the same township was higher in paddy fields than that in mountainous area.The occurrence characteristics of the main diseases in root tubers of Pseudostellaria radix were closely related to the properties of fields.The results of this study could provide theoretical basis for promoting the abundant harvest and impairment of Pseudostellaria radix.