1) preceding crop
前作
1.
Influence of different preceding crops on nitrogen fertilizer effect of flue-cured tobacco;
不同前作对烤烟氮肥效应的影响
2.
In this study,single radom-plot design was conducted to study the effects of different preceding crop(soybean stubble,maize stubble,sweet potato stubble) on the accumulation of dry matter,flag leaf photosynthetic characters and yield of wheat c.
结果表明,前作为玉米和大豆时,开花时旗叶净光合速率高,叶片厚且叶色深;花后绿色叶面积大,持续时间长,叶绿素下降缓慢,叶片衰老延缓;玉米茬和大豆茬的小麦单茎干物质积累量大,成熟期干物重在穗中的分配比例大,表现为穗粒数多,千粒重大,单穗重高,最终产量豆茬和玉米茬小麦显著高于苕茬小麦。
2) cooperation prospect
合作前景
1.
The Actuality of S.African Pining Industry and Analysis on the Mining Cooperation prospect of S.African and China
南非矿业现状及与我国合作前景分析
5) preliminary work
前期工作
1.
Dealing with several relations of the preliminary work in Beilun Central Business District development
北仑核心商务区开发前期工作中几种关系的处理
2.
The comparison between the examination and approval system and the approval system for power grid projects indicates that the approval system presents more strict requirements on preliminary work of power grid projects in terms of acquisition of supporting documents and feasibility study.
在对比分析电网项目实行审批制与核准制的异同后,指出核准制对电网项目前期工作在取得支持性文件和可行性研究方面都提高了要求。
3.
Based on the experience from the preliminary work of colliery construction project,the author has pointed out the basic procedure and existing problems of the preliminary work,and put forward related suggestions for reference.
建设项目前期工作是从项目酝酿决定到开工建设前的各项工作。
6) preceding activity
紧前工作
补充资料：前作
1.前人的著作。 2.指某一种作物种植前所种的作物。例如水稻或谷子收获后播种小麦﹐水稻或谷子即为小麦的前作。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条