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夏秋时节,气温平均在25℃～30℃,超过西芹20℃～25℃的气温要求,再加上多雨,造成田间潮湿的小气候,西芹叶斑病极易流行。它的表现症状为:叶片出现黄色的叶斑,叶片逐渐干枯,茎秆腐烂,根部出现褐色的湿腐,心叶也开始腐烂。现将其防治技术介绍如下:
Summer season, the average temperature in the 25 ℃ ~ 30 ℃, more than celery 20 ℃ ~ 25 ℃ temperature requirements, coupled with rainy, resulting in a humid microclimate in the field, celery leaf spot easily epidemic. Its symptoms are as follows: leaves appear yellow leaf spots, leaves gradually dry, stalk rot, the roots appear brown wet rot, the heart leaves began to decay. Now its prevention and treatment technology introduced as follows: