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1989-1991年,用不同株型的玉米品种进行麦/玉米/甘薯旱地间套作试验。采用群体多维分层切片,分析了玉米群体的叶面积等形态性状和光照特征表明:叶片反向互生性是玉米的固有特性.通常分布在方位角18°9’以内:在群体高度(Y)距茎距(X)和开张距(Z)区间上的三个非线性方程构成了叶面积分布空间,并由此求得叶面积分布的密集区间(占总叶面积80％);群体内光照条件受太阳高度角的日变化的影响极大,并随着距茎距的缩小和群体高度的降低而明显变差。为使间套的两种作物都能高产稳产,应避免叶面积密集区间重叠,即株距应保持在29.6cm左右,大行距应大干90cm。另外,本文还对株距与行距的关系进行了讨论。
In 1989-1991, maize / maize / sweet potato dry-land intercropping experiments were conducted with different plant types of corn. The morphological traits and light characteristics of maize population were analyzed by multi-dimensional population slicing, which indicated that the reciprocal leaf opposite was the inherent characteristic of maize and was usually distributed within the azimuth angle of 18 ° 9 ’ The three non-linear equations on the interval between the stem distance (X) and the opening distance (Z) constitute the leaf area distribution space, and the dense interval of leaf area distribution (accounting for 80% of the total leaf area) The conditions are greatly affected by the diurnal variation of the solar elevation angle and are significantly worse with the reduction of the distance from the stem and the decrease of population height. In order to make the two sets of crops can be high and stable yield, should avoid the overlap of leaf area-intensive areas, that is, the spacing should be maintained at about 29.6cm, big line should be big stem 90cm. In addition, this article also discussed the relationship between spacing and row spacing.