以栓皮栎(Quercus variabilis Blume)容器苗为研究对象,采用两种容器规格(D60容器和D40容器)进行底部渗灌和上方喷灌处理,研究底部渗灌对栓皮栎容器苗生长状况与营养元素含量的影响。结果表明:与上方喷灌处理相比,底部渗灌下的栓皮栎容器苗至少节约63.35%的灌溉水,苗高和地径至少提高10.00%,生物量提高18.40%以上,单株养分含量比上方喷灌显著提高18.00%以上,养分浓度提高至少17.00%; 容器规格的增加可以提高苗高、地径、生物量和单株的氮、磷、钾含量。因此,底部渗灌不仅是一项节水和降低污染的灌溉技术,而且能培育出比上方喷灌质量更好的苗木。
Abstract
This experiment was conducted to examine the effects of two kinds of container size(D60 and D40)and two kinds of irrigation methods on growth and nutrient element content of containerized Quercus variabilis Blume seedlings. Results showed that compared with overhead irrigation, seedlings with sub-irrigation saved at least 63.35% of water, and seedling height and root collar diameter increased by about 10.00%, dry mass increased more than 18.40%, the nutrient contents improved more than 18.00%, the nutrient concentration improved by at least 17.00%. Seedlings also showed increase in height, root collar diameter, dry mass, N, P and K contents with container size increasing. Sub-irrigation is not only a water-saving and eco-friendly technology, but also can produce seadlings with equal or better quality in comparison with overhead irrigation.
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基金
收稿日期:2014-01-20 修回日期:2014-11-24
基金项目:国家林业局“948”项目(2012-4-66); 国家林业公益性行业科研专项项目(201004021)
第一作者:陈闯,硕士生。*通信作者:刘勇,教授。E-mail: lyong@bjfu. edu. cn。
引文格式:陈闯,刘勇,李国雷,等. 底部渗灌和容器规格对栓皮栎容器苗生长及营养元素含量的影响[J]. 南京林业大学学报:自然科学版,2015,39(3):59-64.
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