高粱抗旱机理及保苗技术

Drought Resistance Mechanism of Sorghum and Ensuring Seedling Technique

高梁对干旱具有广泛的适应性,在干旱条件下,通过加强水分的吸收和减少水分的散失来抵御干旱逆境,高粱叶片细胞在低水分下保持较高的膨压是其抵御干旱逆境的机制之一。高粱可在玉米、小麦和大豆不能忍耐的干旱条件下,获得一定产量。抗旱播种方法大体可分为三类。在水资源严重短缺的干旱和半干旱地区应大力发展耐旱和抗旱的高粱。

Sorghum has pervasive adaptability to drought resistance , on drought condition, sorghum resist drought through enhancing absorbing water and reducing water＇s dissipation. It is one of resist drought mechanisms that sorghum holding higher bulge pressure in lower moisture. Sorghum can acquire definite yield on the condition of drought that corn, wheat and soybean can not endure. Planting means of resist drought has 3 varieties. Sorghum that can forbear and resist drought should be devoted major efforts to developing in drought and semi-arid area.