The effect of root separation on plant nitrogen uptake and nitrate nitrogen residual were investigated through field experiment.
利用田间试验,探讨了地下部分隔对蚕豆/玉米间作氮素吸收和土壤硝态氮残留的影响,结果表明:蚕豆/玉米间作,蚕豆不分隔条件下籽粒和秸秆吸氮量比分隔分别增加20 10%,34 43%;玉米不分隔条件下籽粒吸氮量与分隔近似,但秸秆吸氮量比分隔减少13 04%;蚕豆和玉米不分隔条件下土壤硝态氮累积量都高于分隔。
Three experiments were included in the study: (1) Changes of formation, physic- biochemistry and information substance in roots and shoot at seedling stage under slow drought stress were studied.
本试验较系统地研究了四个小麦品种（科遗２６、４４２Ｍ－１、山农２１５９５３、中国春）水分胁迫下地上、地下部的形态、生理和信息传递物质的变化及其抗旱性，为高等植物的抗旱机理研究提供了一些有价值的资料。
To investigate the chemical constituents from the root of Ribes nigrum L.
地下部分化学成分及其抗氧化活性进行研究。
Our objective was to clarify the contribution of above-and below-ground interactions to the intercropping advantage.
该文采用田间微区试验以及地下部种间根系分隔技术研究了玉米(Zeamays)覆膜与不覆膜两种情况下小麦(Triticum aestivum)/玉米间作优势及地上部和地下部因素对间作优势的相对贡献,以期为间作体系的增产提供理论依据。
The roots are the underground parts of the tree that supply it with nourishment.
树根是树的地下部分，用于供应养分。
The lower part was buried in the ground.
下半部分埋在地下。
The snack bar is down in the basement .
快餐部在下面地下室。
bathyrheal underflo
地壳下部补偿物质流
Is the snack bar in the basement?
快餐部在地下室吗?
The subway is now partially opened to traffic.
地下铁道现已部分通车。
The remainder comes from southern coastal regions,
剩下的那部分人来自南部沿海地区，
Water tables are falling throughout the northern half of China.
中国的北半部，地下水位普遍下降。
ON SEISMIC STRATIGRAPHY OF EOGENE IN SOUTHERN LIAODONG BAY
辽东湾南部下第三系地震地层学研究
The Numerical Simulation of Groundwater in the Southern Qinwangchuan Basin
秦王川盆地南部地下水数值模拟研究
The Characteristic of Groundwater Quality of Xingren Basin in West of Ningxia
宁夏西部兴仁盆地地下水水化学特征
Siberian clod downwelling is from surface dive to near CMB;
西伯利亚下降流，规模大，从地表下降到下地幔下部；
genus of perennial rhizomatous herb of southern and southeastern United States.
美国南部和东南部一个多年生地下茎草本属。
Episodic migration and accumulation of hydrocarbon in lower Yanchang Formation of the northwestern Ordos Basin
鄂尔多斯盆地西北部延长组下部幕式成藏特征
Each plate consists of a section of the earth's crust and a portion of the mantle, the thick layer of hot rock below the crust.
每个板块由一段地壳和一部分地壳下部厚层炽热岩石地幔组成。
Finally the troops carried the position at the point of the bayonet.
最终部队硬是拼刺刀把阵地拿了下来。
Foot margin: White space below the text area of a page.
地脚白边:在内文面积下的空白部分。
A rude attack was made on her side.
她的腰部被狠狠地撞了一下。