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1 必须熟悉形态特征只有熟悉品系和品种的农艺性状,如幼苗色、叶鞘色、株高、成株型、叶片数、穗位高、雄穗分枝、花药色、雌穗花丝色;穗形、粒色;荚色、结荚习性、花色、脐色、成熟期等外部形态特征,才能确立准确的选择标准和淘汰对象。认清真伪,纯杂,进行认真比较和鉴别。否则,收不到良好效果。 2 必须掌握开花特点和时间准确掌握开花特点和时间,拔杂去劣才能工省效宏。玉米一般同一植株的雄穗要比雌穗花丝早抽出
1 must be familiar with the morphological characteristics Only familiar with the agronomic traits and varieties, such as seedling color, leaf sheath color, plant height, plant type, leaf number, ear height, tassel branch, anther color, , Color; pod color, pod habit, flower color, umbilical color, maturity and other external morphological characteristics, in order to establish accurate selection criteria and obsolete objects. Recognize the authenticity, pure complex, serious comparison and identification. Otherwise, it will not receive good results. 2 must grasp the characteristics and timing of flowering accurately grasp the characteristics and timing of flowering, plucking inferior to workers can save macro. Maize generally the same plant tassel ear earlier than the ear out