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田间和盆栽试验表明,磷肥影响棉花的生长发育,施磷可提高棉花产量,增产达15%～21%,品质也得到了改善。棉花在营养生长期内含磷量在某一范围时,叶片叶绿素含量随含磷量的增加而提高,磷还参与植株体内能量代谢,提高叶片中ATP的含量,但过量施用磷肥不利于ATP的形成。对棉花各器官含磷量的分析表明,施用磷肥后,各器官对磷的反应是:叶片>叶柄>根>茎>花蕾,说明叶片对磷的反应最敏感。同时,磷
Field and pot experiments showed that phosphorus fertilizer affected the growth and development of cotton. Phosphorus application increased cotton yield by 15% -21% and improved quality. In the period of vegetative growth, the content of phosphorus in cotton is in a certain range, the content of chlorophyll in leaves increases with the increase of phosphorus content, and phosphorus also participates in energy metabolism in plants and increases the content of ATP in leaves. However, excessive application of phosphate fertilizer is not good for ATP form. Analysis of phosphorus content in various organs of cotton showed that the response of phosphorus to various organs after application of phosphate fertilizer was: leaf> petiole> root> stem> bud, which indicated that leaves were the most sensitive to phosphorus. At the same time, phosphorus