不同施肥水平对杨树苗期生长的影响  

Effects of different fertilization levels of three kinds of fertilizer on Poplar Seedling

作　　者：王敏 于雷 梁德军 

机构地区：[1]辽宁省杨树研究所,辽宁盖州115200

出　　处：《园艺与种苗》2017年第3期36-37,40,共3页Horticulture & Seed

基　　金：基金项目:欧美杨速生丰产林定向培育技术研究(2015BAD09B0202)

摘　　要：[目的]比较不同施肥水平对杨树苗期的影响。[方法]采用人工沟施,对杨树扦插苗进行三种施肥方法比较,施肥后调查苗高、地径生长量;测定光合日变化、叶绿素、叶面积。[结果]苗期施肥可提高了杨树苗木质量,施肥过高过低都不利于肥料的作用。[结论]进行数理统计分析后确定每株施N肥3 g,P肥1.5 g,K肥1.5 g为最佳施肥量。[Objective] To compare efletq of different fertilization levels on poplar.[Methodl The heigh and ground diameter increment of 3 different fertilizer levels were investigated by using the method ot artificial seeding. The diurnal changes of photosynthesis, chlorophyll and leaf area were measured. [Resultl Fertilization at seedling increased quality of poplar. [Conclusion] After the analysis of mathematical statistics, the best fertilizer rate of one poplar were 3 g N, 1.5 g P and 1.5 g K.

关 键 词：杨树 苗期 施肥水平 

分 类 号：S792[农业科学—林木遗传育种]