极叶

茎围和最大叶的面积在施用135kg/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；

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 .

叶含Ca量发病后期早衰叶极显著高于健康叶，发病晚期显著高于健康叶；

Ca content in healthy leaves was very significantly higher than that of healthy leaves in the later stage of the disease . Fe content in healthy leaves was very significant higher than that of presenility leaves in the middle and later stage of the diseases .

基于双向极角的植物叶凸包生成算法

Algorithm of Constructing Convex Hull for Plant Leaf Based on Bidirectional Polar Angle

方差分析表明，不同成熟度和不同烘烤温度对烤后烟叶淀粉含量的影响极显著：脚叶、腰叶、上二棚以低温烘烤、成熟这个处理烤后淀粉含量最低，烟叶可用性最强；

Variance analysis results showed that different maturities and different flue curing temperatures have remarkable effect on starch contents of tobacco leaves .

烟叶部位间总糖、还原糖比较差异极显著，中部叶>上部叶>下部叶。总氮含量中部叶、下部叶比较差异不显著，但与上部叶比较差异极显著。

There obtained a best significant difference among total sugar and reducing sugar at different stalk position , which was lower leaf > middle leaf > upper leaf .

结果表明：各药剂极显著提高椭圆叶花锚种子发芽率（P<0.01），其中以CaCl2溶液促进效果最佳（发芽率70%以上，出苗率50%以上）；

The results showed that each treatment significantly increased germination rate of Halenia elliptica seeds , CaCl_2 was the most effective with more than 70 % germination rate and 50 % seedling rate .