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在葡萄一茬果采收后,用CIRAS-3便携式光合作用测定仪测定了阳光玫瑰和夏黑2个葡萄品种叶片的净光合速率(Pn)、气孔导度(Gs)、胞间CO_2浓度(Ci)和叶片蒸腾速率(Tr)。分析表明:葡萄一茬果采收后结果枝中下部叶片的光合能力低,净光合速率甚至是负值,而新梢叶片表现出较高的光合能力。因此,在南亚热带葡萄产区下半年良好的温光资源的气候条件下,可采用破眠技术使葡萄休眠芽在夏秋季萌发当年完成花芽分化,当年开启并完成葡萄第二个生长结果周期,即使不挂果也有利于葡萄生长发育积累养分以保障翌年正常花芽分化,并且提高南方产区温光资源和土地利用率。
The photosynthesis rate (Pn), stomatal conductance (Gs) and intercellular CO 2 concentration of the leaves of two cultivars of Sunshine Rose and Xiahei were measured by CIRAS-3 portable photosynthesis analyzer Ci) and leaf transpiration rate (Tr). The results showed that the photosynthetic capacity of the lower leaves and the net photosynthetic rate were even negative while the shoots of the shoots showed higher photosynthetic capacity. Therefore, under the climatic conditions of good light and light resources in the second half of the southern subtropical grape region, the hypnotic technology can be used to complete the flower bud differentiation of the dormant buds of grape during the germination in summer and autumn, and the second growth cycle of the grape is started and completed, Even without fruit is also conducive to the accumulation of nutrients in grape growth and development in order to ensure the normal flower bud differentiation the following year, and increase the temperature and light resources and land utilization of southern producing areas.