毕业论文农学-吾爱文库网 关键词：玉米品种；根系活力；产量关系。 [gap=892]Key words: Maize; root activity; production;
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导管结构与树干生长、干胶产量关系的不确定性说明，木质部导管结构不是影响橡胶树生长势和产量的主要因子。
The undefined correlations between vessel structural characters and growth and yield suggested that the vessel character was not the main factor affecting the growth and rubber yield.
欧佩克秘书长巴德里曾表示，如果价格压力是供应短缺造成的，欧佩克愿意提高产量。但是他也表示，他不认为价格跟供应有关系。
OPEC Secretary-General Abdalla Salem al-Badri has said the group is prepared to raise production if the price pressure is due to a shortage of supply - but also said he doubted the connection.
提高水稻产量：早在1984年建立正式关系前，水稻所的高产水稻品系和品种（包括“IR-8"）即已被中国研究人员广泛采用。
Raising rice productivity: High-yielding rice lines and varieties from IRRI (including "IR-8") were being utilized by Chinese researchers well before formal relationships were established in 1984.
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