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运用组织学方法分别对种植在水、旱条件下,水旱稻不同叶位叶片的解剖结构做了观察。结果发现。水、旱稻在水、旱条件下,叶脉频率随叶位上升而下降,但维管束总的数目却增加;叶片中央气腔的面积随叶位上升而增大,以倒3—4叶为最大,同时旱稻秦爱的值均大于水稻合江相应叶片的值,并且不论水稻或旱稻,水种条件下的叶片气腔明显大于旱种;叶片表面突起高度也同样随叶位上升而增高,并且不论水稻、旱稻,水种处理均大于旱种;叶片厚度、叶肉厚度水稻旱稻均以旗叶最厚,并且中上部几叶以水种条件下的较厚。木质部、韧皮部的面积以上部几叶最大,旱稻品种比水稻品种的叶片木质部、韧皮部面积通常为大。作者认为上述各性状的变化与其栽培环境的改变有关,因此可以认为是生态适应性在结构上的体现。
Histological methods were used to observe the anatomical structures of leaves at different leaf positions under water and drought conditions. turn out. Under water and drought conditions, the frequency of leaf veins decreased along with the increase of leaf position, but the total number of vascular bundles increased. The area of the central air cavity increased with the increase of leaf position, , While the value of Aloe arborescens was higher than the value of the corresponding leaves of Hejiang in paddy rice, and the air cavity of leaves under water conditions was significantly larger than that of dry species in both paddy rice and upland rice. The height of the surface of the leaves also increased with leaf position increasing Regardless of rice, Upland rice, water treatment are greater than the dry species; leaf thickness, leaf thickness of paddy rice are the flag leaf thickest, and the middle and upper leaves thick under water conditions. The area of xylem and phloem was the largest in the upper part of the leaves, and the leaf area of the upland rice and phloem in the upland rice varieties was usually larger than that in the rice varieties. The authors believe that the above traits are related to the change of their cultivation environment and therefore can be regarded as the structural manifestation of ecological adaptation.