摘要
以牛粪、秸秆、地膜作为覆盖材料,测定盆栽圆黄梨幼树根际土壤水分、养分、有机质含量、植株生长、叶片养分的变化。结果表现为:1)地膜覆盖可显著提高梨幼树根际土壤含水量、降低土壤失水率,但影响植株生长;2)牛粪、秸秆作为供肥覆盖物可显著提高梨幼树根际土壤有效氮、磷、钾含量和有机质含量,平衡土壤养分关系;3)牛粪覆盖处理可显著增加茎粗,促进梨幼树生长发育;显著提高叶片氮、磷、钾含量。综合分析认为,地膜覆盖保水性能最为显著;牛粪覆盖的保墒效果仅次于地膜,较秸秆覆盖,牛粪供肥效果更佳。
The effect of different mulch materials on soil characteristics,tree growth of young pear plant in sandy soil were observed.The results were as follows ：1） With plastic film covering,the soil moisture was improved and the water loss rate was reduced remarkably.But it delayed the growth of plant.2） Cow dung,straw significantly increased the contents of N,P,K,OM in soil and the soil nutrition was balanced.3） Cow dung treatment made a significant increase in plant stem diameter.The contents of N,P,K in leaf were raised.The property of moisture conservation of plastic film covering showed very good.The capacity of supplying nutrient of cow dung gave the best.
出处
《北京农学院学报》
2010年第1期5-8,共4页
Journal of Beijing University of Agriculture
基金
国家科技支撑林业项目子专题"京郊永定河沙地产业化技术示范"(2006BAD26B0601-1)
关键词
覆盖
圆黄梨
根际营养
植株养分
mulching materials
Pyrus pyrifolia
rhizosphere nutrition
plant nutrient
