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
，平衡氮、钾及采取喷灌的方式均能增加生菜叶片的含量，减少干
心的发生。
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，平衡氮、钾及采取喷灌的方式均能增加生菜叶片的含量，减少干心的发生。
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