论文部分内容阅读
当今社会，一个农民如果只凭经验和力气种田已远远跟不上形势发展的需要了，他应当随时掌握以下信息，及时调整种植结构。
现代农民应掌握七种信息
【摘 要】
：
当今社会，一个农民如果只凭经验和力气种田已远远跟不上形势发展的需要了，他应当随时掌握以下信息，及时调整种植结构。
【机 构】
：
不详
【出 处】
：
农家参谋
【发表日期】
：
2004年期
其他文献
In this paper,we focus on the resource scheduling in the downlink of long term evolution advanced (LTE-A) assuming equal power allocation among subcarriers.Cons
Now the researches concerning integral bus mainly focused on design and analysis of overall mechanical property of bus body,and paid little attention to charact
Influence of columnar grain boundary on fracture behavior of as-cast fully lamellar Ti-46Al-0.5W-0.5
The fracture behavior of fully lamellar γ-TiAl alloys depends on the angle between the lamellar orientation and loading axis,but the role of the presentation o
Recently,echo state networks (ESN) have aroused a lot of interest in their nonlinear dynamic system modeling capabilities.In a classical ESN,its dynamic reservo
Quasi-static Analysis of Thrust-loaded Angular Contact Ball Bearings Part Ⅰ: Theoretical Formulation
Ball bearings play an important role in various rotating machineries,but the complicated kinematic and tribological features of ball bearings make many aspects
微小RNA(miRNA)是一类内源性、非编码单链RNA,长度约为22个核苷酸,他们通过与靶mRNA的3’端非编码区结合来抑制基因的表达,参与调节组织器官的生长发育、分化、功能维持和凋
1葡萄蜜膏鲜葡萄汁500mL，蜂蜜250mL，葡萄汁以小火煎熬浓缩至稠液，加入蜂蜜，加热至沸，停火待冷后装瓶备用。每次取1汤匙，用温水化开饮用，每日1次。葡萄汁性味甘、酸、平，能滋肝肾，蜂蜜
The reliability-based maintenance optimization model has been focused by the engineers and scholars but it has never been solved effectively to formulate the ef
Floristic diversity, regeneration status, and vegetation structure of woodlands in Metema Area, Amha
We studied woodland vegetation in broad-leaved deciduous woodlands of Metema in northwestern Amhara regional state,Ethiopia Our objective was to describe plant