抛栽时的秧苗叶龄值；
该基因的转录水平随着叶龄增加而逐渐增强。
这充分表明叶龄追肥对高原玉米增库促源具有良好的效果。
The facts fully show that leaf-age top application increases storage-capacity, source of plateau corn efficiently.
相关分析表明，叶龄与叶片干鲜比值之间呈不显著正相关。
The leaf age was not significantly positive correlation with leaf ratio of dry to fresh weight.
在盆栽试验中，二氯喹啉酸对不同叶龄玉米的敏感性不同。
The sensitivity of quinclorac to corn in different growth stages was studied through potted experiment.
不同叶龄或不同叶位稻叶的光合速率与叶绿素含量成正相关。
The photosynthetic rate was positive interrelated with the chlorophyll content in rice leaf during different leaf-age or at different leaf-order.
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。
In SRI condition, transplant of different leaf age (from 2 to 5 leaf age) seedlings has very small effect on grain yield.
叶龄模型则用来模拟逐日温度对叶龄发育的影响，它可以预测不同叶位的出现日。
The latter is used to simulate the effect of daily temperature on leaf development.
结果表明：印楝种源间光响应曲线因叶龄和冠层部位的不同而呈现不同的特征格局；
The results showed that light response curves of the four provenances exhibited different characteristics with different aged leaves and positions within the tree crowns.
秧苗尤以3～5叶龄期最易感病，6叶龄后抗耐病性逐渐增强，在分蘖盛期后病株基本死亡。
Seedlings at 3 - 5-leaf stage were the most susceptible. The tolerance to the disease increased after 6-leaf stage. Diseased plants died after the peak time of tillering stage.
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。
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.
1997年在分蘖中、后期持续高温，有效分蘖终止期和最高分蘖期向后延迟，叶龄指数增加。
In 1997, the valid tiller ending phase and maximum tiller phase delayed and leaf ages index increased in medium and late tillering phase under high_temperature.
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。
Chlorophyll contents were less in young and old leaves than in mature leaves, while carotenoids were increased with leaf age.
以12个玉米品种为材料，在春播与夏播条件下进行玉米叶龄指数与穗分化期回归关系的试验研究。
With 12 maize varieties used as materials, the regression relationship between the leaf number index and spike differentiation were studied under the spring and summer sowing.
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。
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.
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。
Screened leaf age and MDA content identification indexes of cold tolerance in seeding stage, photosynthetic rate and SOD activity were screened in flowering stage.
抽穗至灌浆期胁迫影响制种玉米库容建立，籽粒小、千粒质量低； 持续或交替水分胁迫严重抑制叶龄进程，显著降低产量；
Owing to water stress on corn, the grains per panicle, mass of 1000-grain and yield of corn was decreased in tasseling to filling stage;
结果表明，随着叶龄的增大，施药后鸭跖草叶中丙二醛（MDA）含量变化量下降，而叶绿素含量、光合速率及气孔导度恢复越快。
The content of leaf MDA decreased, but chlorophyll content, photosynthesis rate and stomatal conductance recovered rapidly with leaf stages after imazethapyr spray.
一个新的系统分三组进行了测试，第二组(里塞尔0与封闭三叶形软骨和里塞尔1)能够最佳预测400至425之间的数字骨龄评分。
A new system with three groups was tested, and the second group (Risser 0 with closed triradiate cartilage and Risser 1) was the best predictor of a digital skeletal age score of between 400 and 425.
以‘解放钟’等5个枇杷品种的2月龄实生苗为材，在水分胁迫条件下，测定了叶、茎尖、活动根等不同器官的SOD、POD活性、脂质过氧化产物MDA含量的变化。
Under water defficiency stress, activities of SOD and POD and content of MDA in leaves, shoot tips and active roots of 5 2-month-old loquat seedlings were measured.
以‘解放钟’等5个枇杷品种的2月龄实生苗为材，在水分胁迫条件下，测定了叶、茎尖、活动根等不同器官的SOD、POD活性、脂质过氧化产物MDA含量的变化。
Under water defficiency stress, activities of SOD and POD and content of MDA in leaves, shoot tips and active roots of 5 2-month-old loquat seedlings were measured.
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