水分胁迫对构树生理及形态的影响

构树广泛分布于我国中低海拔地区,是优良的造纸原料林树种,也是荒山造林的＂先锋＂树种。以不同的水分处理构树苗木,探讨其生理反应及形态变化,了解其对不同干旱环境的适应机制。结果表明：构树苗木在充分供水下生长良好,在20%水分处理下生长最差,生物量低;但在较低水势（-2.87MPa）条件下,缺水处理比充分供水处理时的光合作用调适能力强。

Effect of Water Stress on Pnysiological Form of Broussonetia Papyrigera

Broussonetia papyrifera was widely distributed in the low-altitude areas in China,the habitat of Broussonetia papyrifera was from strong sunshine non-stocked to closed forest,in order to understand the adaptive mechanism of Broussonetia papyrifera under the different arid environment,the plant was treated under different soil water in this article.its shape and the physiological reaction was discussed.The results showed that the plant tree grew good under the full water supplied,growing badly under 20% mois...