他的观点是，在某种程度上二者均由运输物质的网络构成——公路，铁路，水路以及煤气管，污水管还有电缆线都在输送物质，动物血管和植物运输汁液的木质部、韧皮部也是如此。
Roads, railways, water and gas mains, sewage pipes and electricity cables all move things around. So do the blood vessels of animals and the sap-carrying xylem and phloem of plants.
是水稻的主要害虫之一，它刺吸水稻韧皮部汁液，干扰光合产物由源向库的运输，影响水稻的生长和发育。
The BPH feeds mainly on the stems, and sucks assimilates from the phloem. BPH feeding interferes with the translocation of photosynthates from source to sink, hence, affects plant and development.
磷高效小麦基因型的韧皮部蔗糖运输速率和根冠比低于磷低效小麦基因型；
Compared to low P efficient genotype, high P efficient genotype was lower in phloem sugar translocation rate and R/S ratio.
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