植物幼苗生长对缓释肥种类和施肥水平的反应  

Responses of seedling growth on the type and amount of slow release fertilizer

作　　者：杨喜田[1] 杨臻[2] 董惠英[2] 

机构地区：[1]河南农业大学资源与环境学院 [2]河南农业大学林学园艺学院,郑州450002

出　　处：《中国水土保持科学》2008年第1期122-126,共5页Science of Soil and Water Conservation

基　　金：国家人事部高层次留学回国人员资助项目;河南省高校杰出科研人才创新工程项目(2005KYCX002,HAIPURT)

摘　　要：选用刺槐、白榆和大叶猪屎豆3种播种苗为试验植物,研究不同类型缓释肥以及施肥量对植物生长和地上部干质量的影响。结果表明:3种缓释肥类型对白榆的株高、地径以及地上部干质量生长有显著的促进作用,对刺槐的各项生长指标的促进作用有所减弱,而猪屎豆的生长指标则有随着缓释肥施用量的增加而减小的趋势;缓释肥中,总N量对3种植物地上部干质量的影响具有相似趋势,总P量对3种植物地上部干质量无显著影响。在播种造林技术中,为了促进苗木高生长,增强与周围杂草的竞争能力,要尽可能选用豆科植物,在选用无固氮能力的植物进行播种造林时,施用缓释肥料是促进植物幼苗生长的重要手段。Pot experiment was carried out for investigating the effect of slow release fertilizer （SRF） on the growth of Robinia pseudoacacia, Ulmus pumila and Crotalaria assamica. Compared that SRF could stimulate the growth of plant height, diameter at ground level and over-underground biomass of Ulmus pumila signifi- cantly, the stimulating effect for growth of Robinia pseudoacacia was comparatively low, and the growth of Crotalaria assamica had a negative relationship with the increasing of using amounts of N. The effects of total N on above-ground biomass had the same trends and total P had no significant effect. The total N in three SRF had a similar effects, but the total P had no significant effects on over-underground biomass of three species. With the direct seeding technique, leguminous plant would be the preferential species, and if the plant with non nitrogen fixation was selected, using of slow release fertilizer is a very important alternative to stimulate seeding growth.

关 键 词：播种造林 缓释肥 植被恢复 幼苗生长 

分 类 号：S512.1[农业科学—作物学] Q945.3[生物学—植物学]