一、选高纯度种子。对多年种植的实秸品种,提纯复壮更换纯度较高的种子,只有这样,才能从根本上防止空心。 二、选准地块。芹菜为浅根系作物,吸水肥能力较弱,种植在破土、砂壤土、盐碱土、粘重土地块上长势弱、空心重,而种植在土质肥沃、排灌条件较好的壤土、粘土地块上长势强、空心轻。 三、肥水齐攻。定植后至收获前10天,坚持肥 First, choose high-purity seeds. For many years planting real straw varieties, purifying and rejuvenating the replacement of high purity seeds, the only way to fundamentally prevent hollow. Second, the selection of land. Celery as a shallow root crops, water absorption capacity is weak, planted in the soil, sandy loam, saline-alkali soil, sticky heavy land on the weak, hollow weight, and planted in fertile soil, drainage and better conditions loam, clay plots Strong growth, hollow light. Third, fertilizer and water attack. 10 days after planting to harvest, insist on fertilizer