【摘要】 本文从物质生产、营养吸收、库源特征及维管束形态等方面对籼粳杂交稻的高产形成机制进行了探讨.试验表明,籼粳杂交稻赣化7号比汕优63具有明显的产量优势及增产潜力,但源不足、维管束负担过重是限制籼粳杂交稻高产潜力发挥的限制因素.更多还原

【Abstract】 The characteristics of dry matter production,fertilizer absorption,sink and source,and the vascular bundles of Indica-Japonica F1 hybrid were studied.Compared withSanyou 63,the Indica-Japonica F1 hybrid Ganhua 7 had a significantly yield superiorityand extra-high yield potential.The limited factors for developing the potentials of highyield of Indica-Japonica F1 hybrid is the limited source and the high grain number born byeach vascular bundle.更多还原