This article elaborated the kohlrabi element lactone's in agriculture application present situation and the prospect， and the influence which produced in cotton's growth has carried on the experiment to it， including high， the stem was thick， the production increase rate and photosynthesis's influence， indicated finally， the kohlrabi element lactone might enable the cotton the production increase rate to achieve 20%， decreased the verticillium wilt disease incidence rate 2%， raised the photosynthesis
senilism means the phenomenon that cotton plants partly or integratedly stop the vital movement before their time which has effects on the output and quality of the cotton in the effective breeding season caused by its own or external Senilism can bring the reduction of output of the cotton fields，seriously effects the quality of the cotton fibre and cause the drop in various degree on various norms of the cotton fibre like length of the fibre，Micronaire，fiber stress and so 希望能帮上你！！！
