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丹玉6号玉米是我县种植麦田套种玉米面积较大的一个品种。为了掌握科学管理的依据,我们对麦田套种丹玉6号玉米的幼穗分化与外部形态进行了观测调查。一、前期前期是指小穗分化以前的阶段,包括生长锥未伸长期和生长锥伸长期。外部形态可见叶14—16片,展开叶9—10片,叶龄指数45左右。这一时期是植株营养器官分化阶段。栽培管理的目的是,尽可能使植株克服共生期的不利影响,
Dan Yu 6 corn is planted in our county wheat field intercropping a larger area of a species. In order to grasp the basis of scientific management, we observed the spike differentiation and external morphology of maize variety Dan Yu 6. First, the pre-pre-stage refers to the stage before the spike differentiation, including the growth cone is not extended and growth cone elongation. The external shape of visible leaves 14-16 pieces, expand the leaves 9-10 pieces, leaf age index of 45 or so. This period is vegetative organs differentiation stage. The purpose of cultivation and management is to try to make plants overcome the adverse effects of symbiotic period,