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石刁柏(Asparagus officinalis I.)又称芦笋,近年来种植面积已迅速发展,并已加工罐头出口,一般亩产值千元.但由于茎枯病严重,有的株发病率高达60～70%,造成枯死,缺株,甚至全田毁灭,直接影响经济收入.为此,我们对感病期、防治适期、用药次数及杀菌剂田间防效比较等进行了研究.(一)笋芽出土后不同伸长期的感病度试验分别在网室和田间进行,待笋芽出土用硫酸纸套住笋株(芽),按笋芽不同伸长期用120倍每视30个分生孢子悬浮液人工喷雾接种,保湿24小时,每处理10株.两地试验表明,笋芽出土后当天至25天接种,潜育期差异不大.14天后检查,不同伸长期接种后发病程度差异显著,其中当天、5天处理的发病最重
Asparagus officinalis I., also known as asparagus, planting area has been developing rapidly in recent years, and has been processing canned exports, the general average per-mu production value of thousands.But due to serious stem blight, and some strains as high as 60 to 70% , Causing death, lack of strain, and even the destruction of the whole field, a direct impact on economic income.To this end, we conducted a study on the period of susceptibility, prevention and treatment, medication frequency and fungicide field efficacy comparison. After the different elongation stage of the susceptibility test were conducted in the net room and the field until the shoots unearthed with bamboo shoots (sulfuric acid) shoots, shoots different elongation phase with 120 times per view 30 conidia suspension Artificial spray inoculation, moisturizing 24 hours, 10 for each treatment.Experiment shows that the shoots were excised from the day after the shoot to 25 days, the difference was not significant.The 14 days after the inspection, the different stages of inoculation after the onset of significant differences in the incidence, of which The same day, 5 days the incidence of treatment the most