论文部分内容阅读
在高产条件下探讨了高油玉米的需磷特性 ,结果表明 ,单株磷吸收量 1.4 2 7g,每公顷需纯磷85.6 5kg,其中开花前吸收量约占总吸收量的 4 7% ,花后吸收量占 53% ,灌浆期为吸收高峰 ;形成 10 0kg籽粒需磷 0 .74 kg,显著高于普通玉米。植株磷总吸收量与籽粒含油率、蛋白质含量、油分产量和蛋白质产量均呈正相关。盆栽试验表明 ,施磷能促进高油玉米对氮磷的吸收 ,显著提高籽粒的含油率和蛋白质含量 ,影响蛋白质的品质 ,但淀粉含量略有降低
Under high yielding conditions, the demand of high-oil corn was studied. The results showed that the phosphorus absorption per plant was 1.427g, 85.65kg pure phosphorus per hectare, of which the pre-flowering absorption accounted for 47% of the total absorption. After the absorption accounted for 53% of the filling period for the absorption peak; the formation of 10 0kg grain phosphorus 0.74 kg, significantly higher than ordinary corn. Plant total phosphorus uptake was positively correlated with grain oil content, protein content, oil yield and protein yield. Pot experiments showed that phosphorus application could promote the absorption of nitrogen and phosphorus in high oil corn and significantly increase the oil content and protein content of grain, which affected the quality of protein, but slightly decreased the starch content