氮、磷、钾配比施肥对任豆容器苗生长的影响

Effects of fertilization on the growth of Zenia insignis container seedlings

【目的】研究不同施肥配比下任豆Zenia insignis苗高、地径、生物量、叶面积及叶绿素含量等特征的变化,找出最优配方施肥的方案.【方法】通过正交试验设计对任豆容器苗进行氮、磷、钾配比施肥试验.【结果和结论】施肥对苗木生长有促进作用,不同营养元素及其配比对任豆苗木的影响效果不同.N4P4K2和N3P4K3处理对苗高和地径有较大的促进作用,分别比对照增长了251.99%和214.75%,N2P4K1处理时总生物量最大,比对照增加了298.03%.氮对任豆苗木生长影响最大,其次是磷,合理的氮、磷配比可有效提高任豆苗木的质量.

[Objective] Changes of seeding height , ground diameter, biomass, leaf area and chlorophyll content in different proportions of fertilizers were investigated to find out the optimum fertilization scheme .[Method] Through orthogonal experimental design , experiments of N , P, K fertilization were carried out in container seedlings of Zenia insignis.[Result and conclusion] Fertilization could promote the growth of seedlings and different nutrient elements , and their ratios had a different influence on the growth of seed-lings.The treatment of N4 P4 K2 and N3 P4 K3 played a greater role in promoting the growth of seedling height and ground diameter .Compared with the control group , it increased by 251.99%and 214.75%, respectively .Total biomass reached the maximum in the treatment of N 2 P4 K1 , increasing 298.03%com-pared with the control group .N is the biggest influence on the growth of Z.insignis seedling , followed by P.Reasonable ratio of N and P, which can effectively improve the quality of Z.insignis seedlings.