论文部分内容阅读
为提高沙地蓄水保墒能力．改善幼树主要根系分布区土壤生态条件，对沙地毛白杨蓄水抗旱栽培技术及其对幼树生长的作用进行了6a定位研究。结果表明．在幼树根系分布区内分层掺壤土（秸秆）、铺塑料膜以及进行聚水抗旱栽培．可明显增强沙地蓄水保墒能力．形成水、肥的富集区．对幼树成活和保存以及对根系、胸径、树高和材积生长均产生显著的促进作用。造林5a后．铺塑料膜和掺壤土措施试验处理的幼树其材积生长量较对照分别提高99.55％和63.10％。依据其综合效应．遴选4种经济、高效、易推广的蓄水抗旱栽培方式。
In order to improve the capacity of water storage and preservation of sandy soil Improve the soil ecological conditions of the main root distribution area of young saplings, and research on the 6 a positioning of drought-resistant cultivation techniques and their effects on the growth of young saplings. The results show. Laying of loam (stalks), laying plastic film and water-resistant and drought-resistant cultivation in root distribution area of saplings. Can significantly enhance the ability of water storage and preservation of sand. The formation of water, fertilizer enrichment area. The survival and preservation of sapling and root growth, DBH, tree height and volume growth have a significant role in promoting. Afforestation after 5a. Compared with the control, the volume growth of saplings treated with plastic film and loam measures increased by 99.55% and 63.10% respectively. Based on its combined effect. Selection of four kinds of economic, efficient, easy to promote water-saving drought cultivation methods.