CAJ | 학술논문

本研究通过采用盆栽沙培试验对磷镁互作条件下甘蔗的生长效应进行探讨，供试品种为ROC22和粤糖00—236。结果表明：施磷能够明显地促进2种基因型甘蔗的生长和生物量的积累，适当施镁能促进甘蔗生长和生物量的积累，但不同的品种之间存在差异。2个品种的根冠比都随供磷水平的升高呈降低趋势；镁能提高植株根冠比，但供镁过多会对甘蔗根系生长产生抑制作用。磷镁互作过程中，磷属于主效应，镁属于副效应。即2者比较而言，磷素对甘蔗生长效应要大于镁素。适当增施镁能提高甘蔗的生物量。
본연구통과채용분재사배시험대린미호작조건하감자적생장효응진행탐토，공시품충위ROC22화월당00—236。결과표명：시린능구명현지촉진2충기인형감자적생장화생물량적적루，괄당시미능촉진감자생장화생물량적적루，단불동적품충지간존재차이。2개품충적근관비도수공린수평적승고정강저추세；미능제고식주근관비，단공미과다회대감자근계생장산생억제작용。린미호작과정중，린속우주효응，미속우부효응。즉2자비교이언，린소대감자생장효응요대우미소。괄당증시미능제고감자적생물량。
Under a pot-sand-culture test with varieties including ROC22 and TSC00-236, this study probes into the growth of sugarcane in terms of interaction of phosphorus and magnesium. It showed from the experiment that： phosphorus promotes significantly the accumulation of growth and biomass of two genotypes of sugarcane, while certain amount of magnesium facilitates the sugarcane accumulation growth and biomass. However, differences still exist between the two species. Root-shoot ratios of both the two varieties show a decreasing trend with the growth of phosphorus. Magnesium can increase plant＇s root-shoot ratio, but too much of it inhibits sugarcane＇s root growth. In the interaction of phosphorus and Magnesium, phosphorus is the main effect while magnesium is an aftereffect. In other words, the effect of phosphorus on the growth of sugarcane is more obvious than that of magnesium. Appropriate fertilization of magnesium helps increase output of sugarcane.