木薯轮作年限对枯萎病高发蕉园土壤抑病性的影响

为探讨木薯轮作年限对香蕉枯萎病高发蕉园土壤抑病性的影响,试验选择连作12年香蕉枯萎病发病率达90.4%的蕉园,设轮作木薯年限1、2和3年共3个处理,同时在下茬种植香蕉,测定蕉园土壤抑病性的生物指标、非生物指标及下茬香蕉枯萎病的发病率。结果表明：轮作木薯后土壤总真菌数量、病原菌数量和p H值均显著降低,土壤可培养细菌数量、A/F值、B/F值和速效磷含量均增大,且轮作年限越长,效果越明显;随着轮作木薯年限的增加,下茬种植香蕉的放线菌的数量逐年增加,枯萎病的发病率由90.4%降低到40.2%;轮作木薯可有效防治香蕉枯萎病,但轮作年限需超过3年。...

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Bibliographic Details
Published in西南农业学报 Vol. 29; no. 2; pp. 255 - 259
Main Author 柳红娟 黄洁 刘子凡 阮云泽 杨金明
Format Journal Article
LanguageChinese
Published 海南大学农学院,海南海口570228 2016
中国热带农业科学院热带作物品种资源研究所/农业部木薯种质资源保护与利用重点实验室,海南儋州571737%中国热带农业科学院热带作物品种资源研究所/农业部木薯种质资源保护与利用重点实验室,海南儋州,571737%海南大学农学院,海南海口,570228%海南万钟实业有限公司,海南海口,570228
Subjects
土壤抑病性
木薯
轮作年限
香蕉枯萎病
香蕉枯萎病
轮作年限
disease
土壤抑病性
Soil
suppression
木薯
Rotation
wilt
years
Cassava
Banana
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ISSN1001-4829
DOI10.16213/j.cnki.acjas.2016.02.008

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Summary:为探讨木薯轮作年限对香蕉枯萎病高发蕉园土壤抑病性的影响,试验选择连作12年香蕉枯萎病发病率达90.4%的蕉园,设轮作木薯年限1、2和3年共3个处理,同时在下茬种植香蕉,测定蕉园土壤抑病性的生物指标、非生物指标及下茬香蕉枯萎病的发病率。结果表明：轮作木薯后土壤总真菌数量、病原菌数量和p H值均显著降低,土壤可培养细菌数量、A/F值、B/F值和速效磷含量均增大,且轮作年限越长,效果越明显;随着轮作木薯年限的增加,下茬种植香蕉的放线菌的数量逐年增加,枯萎病的发病率由90.4%降低到40.2%;轮作木薯可有效防治香蕉枯萎病,但轮作年限需超过3年。
Bibliography:51-1213/S
LIU Hong-juan, HUANG Jie, LIU Zi-fan, RUAN Yun-ze ,YANG Jin-ming（1. College of Agronomy, Hainan University, Hainan Haikou 570228, China;2. Tropical Crops Genetic Resources Institute, Chinese Acade- my of Tropical Agricultural Sciences / Key Laboratory of Conservation and Utilization of Cassava Genetic Resources, Ministry of Agriculture, P.R. China, Hainan Danzhou571737, China; 3. Hainan Wanzhong Industrial Co. , Ltd. , Hainan Haikou 570228, China）
Cassava; Rotation years; Banana wilt disease; Soil disease suppression
The effects of different years of cassava rotation on soil disease suppression in the plantations were discussed, in which banana were planted for 12 years and the incidence rate of wilt disease were 90.4 %. The results showed that cassava rotation significantly decreased soil fungi number, pathogen quantity and pH value, while increased the number of soil cuhurable bacteria, the values of A/F and B/F and avail- able phosphorus content. Furthermore, the longer the rotation years was, the g
ISSN:1001-4829
DOI:10.16213/j.cnki.acjas.2016.02.008