培育壮苗是谷子高产的首要关键。据统计分析,壮苗指标与穗重之间呈显著的正相关,相关系数γ=0.8785。特别是平川地区,往往由于蹲不住苗,造成“苗旺子秕”而减产。一、壮苗的生理特点谷子壮苗,应该是全苗满垅,生长整齐粗壮,根深叶挺,颜色绿,拔节前每株根数达15—16条,地上部每厘米长的干重达15—20毫克。这样的谷苗具有以下生理特点:1.根系发育良好,吸收代谢能力强。谷 Nurturing strong seedlings is the key to high yield of millet. According to the statistical analysis, there is a significant positive correlation between strong seedling index and ear weight, the correlation coefficient γ = 0.8785. In particular, Hirakawa area, often due to squatting seedlings, resulting in “seedlings son Zi” and cut. First, the strong physiological characteristics of millet Millet strong seedlings, full seedlings should be full, growing neat stout, deep roots, color green, before jointing each plant up to 15-16 roots, shoots per centimeter long dry 15-20 mg. This seedling has the following physiological characteristics: 1. Root well developed, strong absorption and metabolism. Valley