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用石腊切片法研究了对夹叶解剖特征,用重量法测定了对夹叶生理指标;用正交试验法考察了施氮物候期、施氮量、采茶留叶种类、铺草厚度对正常芽叶生产量的影响。结果表明:对夹叶在它形成的早期有着比正常芽叶较为完善的光合结构和输导结构,净光合强度较大,呼吸强度较小,能更早转化成“代谢源”,因而是一类先行功能叶;对夹叶的形成与发生是茶树生理调节的一种外部特征;合理留养对夹叶符合茶树适应性自然选择,可以控制对夹叶恶性循环;在茶树驻芽期或休眠后期施氮有利于生长点叶原基分化,能显著减少对夹叶形成。
The anatomical characteristics of the leaf were studied by paraffin section method. The physiological indexes of the leaf were measured by gravimetric method. The effects of phenological stage, nitrogen application rate, Effect of normal shoot production. The results showed that in the early stage of its formation, the folder leaf had a better photosynthetic structure and transport structure than the normal shoots, with a strong net photosynthesis intensity and a small respiratory intensity, which could be transformed into a metabolic source earlier It is a kind of external characteristic that physiological regulation of tea tree is formed and happened. The rational retention of leaf clip conforms to the natural selection of tea tree and can control the vicious circle of leaf clip. Post-application of nitrogen is conducive to the growth of point-leaf primordium differentiation, can significantly reduce the folder leaf formation.