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棉叶是棉花最重要的器官,具有光合、吸收、蒸腾、呼吸等作用。利用其吸收及光合作用有针对性地进行叶面施肥,具有利用率高、肥效快的特点。 喷施部位:棉花叶片的向阳面是排列紧密且表面光滑的栅栏组织,附着及吸收能力差;背面是疏松的海绵组织,表面粗糙多茸毛,对肥液的附着力和吸收能力高于向阳面。因此,棉田叶面施肥时要将喷雾器的喷头冲上,把肥液喷在叶片的背面。 喷施肥料品种:对于晚发棉田及后期早衰的,可喷洒2％的尿素水溶液;旺长棉田及防止蕾铃脱落,可喷洒300
Cotton is the most important organ of cotton, with photosynthesis, absorption, transpiration, breathing and so on. Utilize its absorption and photosynthesis for targeted foliar fertilization, with high utilization, fast-acting characteristics. Spraying parts: the sunny side of cotton leaves are closely arranged and smooth surface of the fence organization, poor adhesion and absorption; the back is a loose sponge tissue, the surface rough and more hair, the adhesion and absorption of fertilizer fluid is higher than the sunny side . Therefore, when the foliar fertilizer on the cotton field to spray the nozzle rushed to the fertilizer spray on the back of the blade. Spraying fertilizer varieties: Late cotton fields and late premature aging, can be sprayed with 2% urea solution; Wang cotton fields and to prevent the fall of bell, spraying 300