不同施肥水平对亚麻氮、磷、钾积累量及生长动态的影响  

Effect of different fertilization levels on N,P,K accumulations and growth dynamics in flax

作　　者：于琳[1] 李明[1] 李冬梅[1] 贾新禹[1] 王克臣[1] 

机构地区：[1]东北农业大学农学院,哈尔滨150030

出　　处：《东北农业大学学报》2007年第6期757-762,共6页Journal of Northeast Agricultural University

基　　金：黑龙江省博士后基金(LRB00075)

摘　　要：试验采用三因素二次饱和D-最优设计,选用高产中纤的黑亚14和中产高纤的高斯进行盆栽试验,在不同生育时期取样调查叶面积、干物重和氮、磷、钾积累量。结果表明,亚麻地上部氮、磷、钾积累量呈"S"型曲线变化。氮、磷、钾的最终积累量表现为全氮>全钾>全磷;氮肥的施用能显著增加叶面积,提高亚麻的干物质积累,如配合磷、钾肥施用则效果更佳。磷肥有利于氮素的吸收,应配合氮肥施用,增加干物质积累;钾肥有利于抗倒伏,减缓后期叶片脱落,但单施钾肥则不利于干物质积累。The quadratic saturation and D-optimum design of three factor was used in this experiment.Two varieties of Heiya14(high yield and mid-fibre percent) and AG(mid-yield and high-fibre percent) were planted in pot,and leaf area,weight of dry matter and accumulations of N,P,K in aboveground part had been investigated in different growth stages.The results indicted that the accumulations of N,P,K changed with S curve,and the order of total accumulation in mature stage was N>K>P.Using N fertilizer could enhance leaf area and accumulation of dry matter markedly.If cooperated with P and K fertilizer,it would be more effective.P fertilizer was favorable to the assimilation of N,it should be used with N fertilizer to enhance the accumulation of dry matter;K fertilizer was favorable to resist to lodge and slow down shedding of leaf in mature stage,but only K fertilizer didn′t benefit to the accumulation of dry matter.

关 键 词：亚麻 生长 施肥 积累量 

分 类 号：S563.2[农业科学—作物学] S147.2