怎样搞好小麦蹲节壮秆

来源 :农林科学实验 | 被引量 : 0次 | 上传用户:sweetacid
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
继小麦高产田前期——“发好苗”之后,就要注意中期的“控好节”,使植株的地上部分(茎叶)与地下部分(根系)、主茎与分蘖、群体与个体得到协调发展,这样才能达到穗多、穗大和壮秆不倒,实现高产。“控好蘖”,是指控制适当的分蘖。提高分蘖 Following the early stage of high-yielding wheat field - after “good seedling” is developed, attention should be paid to the medium-term “controlled good” so that the aerial parts (roots), stems and tillers, and the individuals Coordinated development, so as to achieve more spikes, spike and strong stalks do not fall, to achieve high yield. “Controlled tillering” refers to the control of proper tillers. Improve tillering
其他文献
Some triply excited states of He- ion are studied using the saddle-point complex-rotation method.The energies and Auger widths of these resonances are calculate
In this work, the influence of group-velocity mismatch on soliton self-routing pulse switching in a nonlinear fibrecoupler is discussed in detail by the use of
The torus-doubling bifurcations of a quasi-periodically forced two-dimensional map are investigated numerically.The scaling law on the terminal points of the to
Transition probabilities of the 2s2p3 5S2-2s22p2 3P1,2 intercombination transitions in NII have been calculated by using a large-scale multiconfiguration Dirac-
本文使用数学模型的方法,探讨不同工程阶段(1998年1月至2008年2月)北槽河床冲淤特征的动力机制.应用Delft3D模型建立了精度较高的长江口~北槽三维嵌套流场模型,为分析整治工程
本文以城市记忆理论为基础,针对开封曹门大街至穆家桥的环境地貌、人文特点、历史事迹等,采用文献分析、逻辑分析和案例探讨相结合的研究方法,以合适的景观设计学研究进路开
有一年夏季,一次台风暴雨过后,广州市市场的蔬菜突然脱销,不少市民纷纷来信报社,诉买菜难之苦。这时,我接受了编辑部交给的采访任务,撰写一篇市民谈买菜难的报道。于是,我按
The properties of the two-mode mazer operating on V-type three-level atoms are studied. The effect of the oneatom pumping on the two modes of the cavity field i
The bandwidth theorem for Fourier analysis on any time-dependent classical signal is shown using the operator approach to quantum mechanics. Following discussio
All-optical XOR and NOT logic operations based on semiconductor optical amplifier loop mirror (SLALOM) are simultaneously demonstrated theoretically and experim