1·The leaf age was not significantly positive correlation with leaf ratio of dry to fresh weight.
相关分析表明，叶龄与叶片干鲜比值之间呈不显著正相关。
2·The relative consumption rate (RCR) and the approximate digestibility (AD) increased with the leaf age.
随着叶片日龄的增加，相对取食量和近似消化率有明显增大。
3·Up to 6 - leaf age of maize, the number of primary and secondary roots of all the genotypes were merely affected.
在试验所处的玉米生育时期（6叶龄），磷对所用自交系的初生根及次生根数量没有影响。
4·In SRI condition, transplant of different leaf age (from 2 to 5 leaf age) seedlings has very small effect on grain yield.
在强化栽培条件下，不同叶龄(2—5叶龄)的秧苗移栽对其产量的影响很小。
5·Chlorophyll contents were less in young and old leaves than in mature leaves, while carotenoids were increased with leaf age.
单位叶面积的叶绿素素含量在幼叶和老叶较低而成熟叶中较高，类胡萝卜素随着叶龄的增加而增加。
6·After heavy pruning, the activity of SOD increased, the CAT activity decreased, and that of POD was related not only to leaf age, but also to the cultivars.
重修剪后茶树SOD活性提高，CAT活性下降，POD活性变化既与叶龄有关又与品种有关。
7·Screened leaf age and MDA content identification indexes of cold tolerance in seeding stage, photosynthetic rate and SOD activity were screened in flowering stage.
在苗期筛选出了叶龄、MDA两个耐冷性鉴定指标，在开花期筛选出了光合速率和SOD活性两个耐冷性鉴定指标。
8·Sun-shading can promote the growths of leaf age and tiller, and the leaf-area. The negative impacts on length of fibre cell, coefficient of flexibility, ratio of length and diameter.
遮阳处理能促进叶龄、分蘖的增长，但不利于叶面积的增长，对纤维细胞的长度、柔性系数、长宽比等也产生不良影响。
9·The main factors influencing the wheat yield in downland were initial nitrogenous dressing, the amount of nitrogenous fertilizer applied for different leaf age and close fertilization.
对模型进行解析，找出了影响五区小麦产量较大的因子是氮基肥、不同叶龄追施氮肥和密度。
10·The results indicated that plant height, leaf age, LAI and accumulation of dried matter existed difference under different sowing density, especially sowing densities had the great effects on yield.
结果表明，不同种植密度下株高、叶龄、LAI和干物质积累均存在差异，且产量受种植密度影响较大。