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棉花实行地膜覆盖栽培后,由于成铃期提前,发病历期长,烂铃明显加重。据观察,铃病主要集中在棉株下部3个果枝,其烂铃数占全株总烂铃数的82.3％。而且铃病发生轻重主要取决于棉铃罹病敏感期与高温高温季节吻合时间长短。鉴于烂铃主要发生部位多为经济价值低下的小铃、僵铃、病铃以及发育不完全的劣铃。所以,在地膜棉早发的基础上,在棉花补偿力较强的阶段,人为地去除棉株下部果枝上的早蕾,既可调节棉株体内的养分分配方向,使生殖生长的养分转向营养器官,搭好丰产株型,减缓过早生殖生长对棉花产量形成的限制,又可减少棉铃受病敏感期与高温淫雨季节相遇的机会,
Cotton mulching cultivation, due to the early bolting stage, the long duration of illness, bad bell significantly increased. It is observed that bell disease mainly concentrated in the lower three cotton branches, the number of rotten bolls accounted for 82.3% of the total number of the total number of rotten bolls. And the severity of bell disease mainly depends on the sensitive period of cotton boll disease and high temperature and high temperature season coincides with the length of time. In view of the main parts of rotten bell are mostly small bells with low economic value, stiff bell, sick bell and poorly developed bell. Therefore, on the basis of early development of cotton mulching, the early bud on the lower branches of cotton plants can be artificially removed in the stage of strong compensatory power of cotton, which can not only regulate the distribution of nutrients in cotton plants, but also turn the nutrition of reproductive growth into nutrition Organs, set up a high-yielding plant type, slow down the premature reproductive growth restrictions on the formation of cotton yield, but also reduce the cotton boll by the sensitive period of weather and high temperature rainy season encounter opportunities,