番木瓜发生瘤肿病原因的探讨

Occurrence causes of oncosis of papaya

通过果园调查、室内化验分析以及大田验证试验,结果表明,番木瓜发生瘤肿病的原因主要是过量施用石灰,使土壤中C a/B过高,引起番木瓜缺B所致。合理施用B肥和石灰,可以有效防治番木瓜瘤肿病。

Through the investigation of orchard, lab analysis and field tests, it showed that the occurrence of oncosis of papaya was caused by lack of boron （B） in soil, which was aroused by the higher ratio of Ca/B from the excessive application of calcareousness. The oncosis of papaya could he controlled effectively by reasonable application of B fertilizer and calcareousness.