Ca absorption and tipburn of lettuce were studied under different application of N, K, Ca, sprinkler irrigation and border irrigation in open field.

摘要在露地栽培条件下，研同氮、钾、水处理以及喷灌、畦灌对生吸收和干烧心的影响。

The results showed: inncrease application of Ca, balance application of N and K and sprinkler irrigation could increase Ca content of lettuce leaves, reduce occurring of tipburn.

结果表明，增施，衡氮、钾及采取喷灌的方式均能增加生叶片的含量，减少干烧心的发生。