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一般根系在吸收养分水分的同时,随之生成各种游离的氨基酸和细胞激动素,其中地上部N代谢的变化起着重要的作用。因而,当地上部生长超越一定限度时,围绕根系生成的各种物质,在地上部各器官间便发生竞争,从而对于同化器官叶片的生长和蛋白合成,必然具有较大的影响。大豆中的大叶品种,与小叶品种相比,叶的蛋白水平和光合成速度都较低,在用TIBA进行叶面撒布、抑制叶的生长时,叶蛋白水平和光合速度均显著上升。水稻的叶面生长与蛋白水平及光合速度,具有密切的关系,进一步说明叶的生长与内在生
The general root system in the absorption of nutrients at the same time, followed by the generation of a variety of free amino acids and cytokinin, in which aboveground N metabolism plays an important role. Therefore, when the growth of the upper part of the local area exceeds a certain limit, the various substances generated around the root will compete with each other in the organs above the ground, which will inevitably have a great influence on the growth and protein synthesis of the organs. Compared with the leaflet varieties, the leaf size and photosynthetic rate of the large-leaved soybean varieties were lower, and leaf protein level and photosynthetic rate increased significantly when foliar application of TIBA was carried out to inhibit leaf growth. Rice leaf surface growth and protein levels and photosynthetic rate, is closely related to further illustrate the leaf growth and endogenous