【作者】 刘高琼； 黄保健； 刘际明； 李式军； 蒋翰群； 王康才；

【Author】 Liu Gaoqiong, Huang Baojian, Liu Jiming, Li Shijun, Jiang Hanqun, and Wang Kangcai (Department of Horticulture, Nanjing Agricultural University, Nanjing 210095)

【机构】 南京农业大学园艺系；

【摘要】 在徐淮地区已多年发生茎枯病的芦笋产区进行的定点观察和小区试验结果表明:芦笋茎枯病的年发生过程中有两个峰期,分别在5月下旬-6月上中旬和7月下旬-8月底两个降雨高峰期,其中以第二峰期的危害最为严重。将芦笋的嫩茎停采期由传统的7月初推迟至7月底以后,可使秋茎茂盛期避开茎枯病发生峰期,危害显著下降。但随着停采期推迟,秋茎数明显减少,并且推迟过多,秋季营养积累期过短,影响翌年嫩茎产量。试验表明:在该地区,将芦笋嫩茎采收期延长至7 月底,可使茎枯病的发病率由100％降低至10％左右,病指由90．5降至10以下,延长有效的秋季营养积累期,翌年嫩茎产量增加,一级品率提高。更多还原

【Abstract】 The results of field survey and plot experiments carried out in Xuzhou asparagus farm where asparagus stem blight had been a serious disease showed that there were 2 outbreak stages in 1 year, during the end of May to the middle of June and the end of July to the end of August, respectively. The destory in the latter outbreak stage was very serious, which could be effectively avoided by delay of retrieve time. The Autumn fern number and the fern diameter, however, decreased significantly as the retrieve time delay.The results of 3-year field experiments showed that the incidence could be decreased to 10% from 100%, the disease index to below 10 from 90. 5 while the spear yield in the next year increased when the retrieve time delay from July early (usual) to July end.更多还原