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.
而对于以山梨醇、甘露醇、半乳糖醇等多元醇为光合作用初级运输物的植物中，硼可以与多元醇形成络合物而在韧皮部中自由运输。
But boron also exhibits rapid and significant phloem mobility in species for which sorbitol, mannitol, or dulcitol are the primary photosynthates since these polyols can effectively complex boron.
同化物在韧皮部中以液流形式运输，液流中的水主要来自木质部。
The assimilate transports in the phloem by liquid form and the water of the liquid mainly comes from the xylem.
绿色植物叶进行光合作用制造有机物，通过茎的韧皮部向下运输供给根的需要。
The organic matters were produced through photosynthesis by the leaves of the green plants and were transported down to meet the need of root through the bast of the stem.
绿色植物叶进行光合作用制造有机物，通过茎的韧皮部向下运输供给根的需要。
The organic matters were produced through photosynthesis by the leaves of the green plants and were transported down to meet the need of root through the bast of the stem.
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