When the K level was above 135 kg/hm2,the stem girth and maximal leaf area differed significantly as compared with CK,so did LAI.

• 茎围和最大叶的面积在施用 135 kg/hm2以上的处理与 CK 之间的差异性达到极显著水平,叶面积指数也存在显著差异;