芹菜烧心是怎么回事? 问:芹菜生长过程中常常会出现烧心现象,不知是什么原因,如何防止?广西省南宁市 吴新云 答:芹菜烧心是缺钙症状,心叶的叶脉间开始变褐,随之叶缘细胞逐渐死亡,病部呈黑褐色。前期病害少,等到长有11～12片叶时开始大量出现病株。往往一次性施用化肥量过 Celery burning heart is how is it? Q celery growth process often appear heartburn phenomenon, I do not know what the reason is, how to prevent? Nanning, Guangxi Wu Xinyun A: celery heartburn symptoms of calcium deficiency, heart leaf vein began to brown, Along the leaf edge cell gradually died, the disease was dark brown. Pre-disease less, until the long 11 to 12 leaves began to appear a large number of diseased plants. Often a one-time application of fertilizer over