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以长筒石蒜(Lycoris longituba)开花种球为试材,采用土壤(沙土,沙土+泥炭土3∶1,园土+泥炭土(5∶4)和光照(遮阴率88%、54%、0%)双因素试验设计,探讨了不同土壤和光照条件对长筒石蒜叶片数量和长度、鳞茎干重和湿重比,以及净光合速率的影响。结果表明:叶片数量、鳞茎干重和湿重比随着光照强度的增加而升高,叶片长度随着光照的增加而减少,适当的土壤养分有利于增加叶片数量和长度、鳞茎干重和湿重比,但过量的土壤养分并没有显著的效果,反而出现下降的趋势;不同土壤基质对盛叶期叶片的净光合速率无显著影响,而随着光照强度的增加净光合速率显著增强;土壤和光照的交互作用也存在显著差异,光照的影响要大于土壤的。因此,长筒石蒜在叶期属于阳生植物,为提高其鳞茎产量应保证充足的光照和适量的土壤养分。
The seedlings of Lycoris longituba were used as test materials. Soil (sandy soil, sand soil + peat soil 3: 1, garden soil + peat soil 5: 4) and light (shading rate 88%, 54% 0%) were used to investigate the effects of different soil and light conditions on the number and length of leaves, the dry weight and wet weight ratio of bulb and net photosynthetic rate.The results showed that leaf number, dry weight and wet weight of bulb The weight ratio increased with the increase of light intensity, and the leaf length decreased with the increase of light intensity. Appropriate soil nutrients were helpful to increase leaf number and length, bulb dry weight and wet weight ratio, but excessive soil nutrients were not significant The net photosynthetic rate had no significant effect on the leaves of full-leaf stage, while the net photosynthetic rate increased significantly with the increase of light intensity. There was also a significant difference in the interaction between soil and light. The light Is greater than the soil.Therefore, the long-stemmed garlic belongs to Yangsheng plants in the leaf stage, in order to improve its bulb yield should ensure adequate light and soil nutrients.