【摘 要】
:
玉米从抽穗期到完熟期,就进入了营养生长和生殖生长阶段。当玉米抽穗后,营养生长达到高峰,以后逐渐减退,而生殖生长逐渐达到高峰,养分从各个不同器官源源不断地向子粒转运这
论文部分内容阅读
玉米从抽穗期到完熟期,就进入了营养生长和生殖生长阶段。当玉米抽穗后,营养生长达到高峰,以后逐渐减退,而生殖生长逐渐达到高峰,养分从各个不同器官源源不断地向子粒转运这一时期是产量高低的关键时期。因此做好后期的田间管理是非常必要的。 1、玉米是喜水,肥作物,合理地使用肥料对玉米的主要经济性状和产量影晌较大。在施足底肥的基础上,
Corn heading from heading to maturity, it entered the vegetative and reproductive growth stage. When the corn is heading, the peak of vegetative growth is reached, and then gradually diminishes, while the reproductive growth gradually reaches the peak. Nutrient transfer from different organs to grain continuously is the critical period of yield. Therefore, the late field management is very necessary. 1, corn is hi water, fertilizer crops, the rational use of fertilizer on the main economic traits and yield of corn greater impact. On the basis of foot application of fertilizer,
其他文献
Grooves arranged in one-dimensional quasiperiodic pattes are prepared by mechanical method. Drag reduction experiments are performed by R/S plus rheometer and t
Controlled manipulation of the electron spin by means of a microwave field is investigated. The near magnetic field generated by a copper wire antenna is measur
We present a strain-compensated InP-based InGaAs/InAlAs photovoltaic quantum cascade detector grown by solid source molecular beam epitaxy. The detector is base
We present a three-dimensional geometry model for tortuosity of streamlines in porous media with randomly placed cylindrical particles. The proposed model is ex
We report the enhancement of the light extraction of InGaN-based green light emitting diodes (LEDs) via the interface nanotexturing. The texture consists of hig
A thin TiO2 layer inserted in a phase change memory (PCM) cell to form a deep sub-micro bottom electrode (DBE) is proposed and its electro-thermal characteristi
Top-illuminated metamorphic InGaAs p-i-n photodetectors (PDs) with 50%cut-off wavelength of 1.75 μm at room temperature are fabricated on GaAs substrates. The
An optimizing scheme for electron acceleration in the wake bubble with dense-plasma wall driven by an ultraintense laser pulse is presented and investigated by
Density functional molecular dynamics are used to study the melting behavior of single-walled SiC nanotubes. The melting of SiC nanotubes starts from the therma
The blend of nickel phthalocyanine (NiPc) (2 wt. %) poly-N-epoxypropylcarbazole (PEPC), (1 wt. %) and carbon nano-tube (CNT) powder (2 wt. %) in benzole is depo