spike density

Effects of Plant Density on Physiological Characteristics of Different Stems during Tillering Stage in Two Spike-types Winter Wheat Cultivars

种植密度对两种穗型小麦品种分蘖期茎蘖生理特性的影响

Principle component analysis showed that the first four main components including spike density, kernel weight per spike, grain number, plant height made the contribution of 85.58% to variation, which offered the basis for the parents selection of wheat breading.

主成分分析显示4个主成分（穗密度因子、穗粒重因子、粒数因子、株高因子）对变异的贡献率达85.58%，可作为亲本选择的依据。

Sigmund's thermal spike sputtering model has been modified by replacing the surface energy deposition density in Sigmund's model with average energy deposition density.

对Singmund热尖峰溅射模型进行了修正.用平均能量淀积密度近似代替了Singmund热尖峰溅射模型中的表面能量淀积密度近似。

Inheritance of Spike Length and Density of Barley in Three Crosses

三个大麦杂交组合的穗长和穗密度的遗传