| 陈慈相,谢金招,杨斌华,许长生.赣南地区脐橙溃疡病发生为害规律研究[J].中国南方果树,2014,43(5): |
| 赣南地区脐橙溃疡病发生为害规律研究 |
| Study on The Occurrence Regularity of Citrus Canker in Gannan Region |
| 投稿时间：2014-04-02 修订日期：2014-04-30 |
| DOI： |
| 中文关键词: 柑橘溃疡病 赣南脐橙 发生为害规律 |
| 英文关键词:citrus canker Gannan navel orange occurrence regularity |
| 基金项目:国家科技支撑计划项目（2007BAD61B05）；公益性行业（农业）科研专项（200903004-06-2） |
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| 中文摘要: |
| 本研究在赣南地区三个县各选定1个幼龄果园和1个成年果园，连续2年每5d1次定点、定时观察调查，对脐橙溃疡病发生规律进行研究。结果表明，赣南地区脐橙春梢最早出现症状为4月15日，一般4月20日～25日开始发病，发病高峰期为5月1日～10日；幼龄树夏稍6月1日～5日开始发病，6月20日～7月10日为发病高发期；成年结果树夏梢6月25日～30日开始发病，7月10日～15日为发病高发期；秋稍8月10日～15日开始发病，8月20日～25日为发病高峰；幼龄树晚秋梢9月15日～20日开始发病，10月1日～10日为发病高发期；果实4月25日～5月10日开始发病，5月20日起病情发展较快，6月10日～7月10日为全年发病高峰期，8月20日以后病情开始趋于稳定，9月15日以后病情基本稳定。掌握了脐橙各梢期和果实溃疡病发病初期、快速增长期、高峰期的时间与物候期。通过调查，明确了脐橙溃疡病在树冠各方位的分布规律、脐橙各品种溃疡病田间感病性差异和溃疡病不同为害程度对果实产量的影响。 |
| 英文摘要: |
| to study the occurrence regularity of citrus canker in Gannan region, 3 young and 3 matured orchards from three local counties (each county contains one young and one matured orchard) were chosen as the experimental targets. The experiment took 2 years and the occurrence condition of citrus canker was observed every 5 days at the same place and same time. For the spring shoots, the earliest symptom emerged at 15th Apr, deepened between 20th and 25th Apr, and peaked between 1st and 10th May. For the young summer shoots, the symptom emerged between 1st and 5th Jun and worsened between 20th Jun and 10th Jul. But for the matured summer shoots, symptom showed between 25th and 30th Jun and worsened between 10th and 15th Jul. The outbreak and peak of the symptom for the autumn shoots were 10-15th Aug and 20-25th Aug, respectively. While for the late autumn shoots, the beginning and peak days were postponed to 15-20th Sep and 1st-10th Oct. As to fruits, the symptom began from 25th Apr to 10th May, worsened after 20th May, peaked between 10th Jun and 10th Jul; but the occurring pace slowed down after 20th Aug and stabilized after 15th Sep. This work studied the occurrence, outbreak and peaking regularity for different shoots of Navel orange. The results revealed the distribution regularity of citrus canker around the crown、the susceptibility of among different cultivars and the impact of citrus canker on fruit yield. |
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