【摘要】 玉米根系在田间的分布,绝大部分(75.6%)集中于上层土壤中(0～10厘米)。不同土体积对根系发育的影响很大,地上部生长和产量亦有明显的相应变化。在一定范围内,根干重、主根总长均依土体积的大小呈显著的回归关系。根与叶之间有明显的相互作用。根量同叶面积,生物产量和籽粒产量之间均存在着显著的正相关关系。更多还原

【Abstract】 Most of the roots of the maize plant are distributed in the top layer of the soil(0-10cm),whereas only a smaller proportion of themcould reach the deeper layers.The volume of soil in which the rootsgrow also plays an important role in the growth and development ofthe root system as well as the above-ground parts and the yield.Within a certain limit,the soil volume is positively correlated with the dryweight and the total length of the roots.There exists also a significantinterrelationship between the root system and that of the leaves;thequantity of roots is positively correlated with the leaf area,biomassand grain yield respectively.更多还原