The distribution of mineral nutrient elements was different in different leaf position, main leaf veins and soft leaves.
各种矿质元素在不同叶位以及同叶位的中肋和软叶中的分配均有所不同。
Some important neutral flavor constituents and routine constituents of Henan flue-cured tobacco leaves from different mature and different stalk position were analyzed.
对中部和上部不同成熟度河南烤烟烟叶中的多种重要中性香味成分和常规成分进行了分析研究。
The size of middle and lower leaves was effected slightly while the weight per leaf of different stalk position and upper leaf size greatly by topping stage and the remained leaf number.
打顶时间的早晚和留叶数的多少对中、下部叶片大小影响较小，但影响这些部位叶片的单叶重，对上二棚及顶叶的开片及单叶重都具有深刻的影响；
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