不同配方施肥对黑壳楠生长和光合生理的影响

Effects of Different Formulated Fertilizations on Plant Growth and Photosynthesis of Lindera megaphylla

以大洪山一年生黑壳楠(Lindera megaphylla Hemsl)苗木为研究对象,采用N肥、P肥、K肥、NP混合肥、NK混合肥、PK混合肥、NPK复合肥和不施肥(CK)8种施肥处理后,研究了不同施肥处理后黑壳楠的生长和光合生理。结果表明:(1)施用复合肥(NPK处理)促进大洪山黑壳楠生长的作用最为明显,使用N肥、NP肥对促进幼苗生长也比较明显。(2)不同配方施肥下大洪山黑壳楠的光合速率的差异不大,以施用复合肥(NPK)的净光合速率为最高。

Annual Da Hong-mountain Lindera megaphylla was used to study the growth response,including height,stem diameter,crown and other morphological characteristics,as well as the leaves photosynthetic rate changes of Da Hong-mountain Lindera megaphylla in different formulated fertilizations and different periods.The main purpose was to find an appropriate fertilization method which could promote the Da Hong-mountain Lindera megaphylla to grow rapidly through the effect of different formulated fertilizations on the plant growth and photosynthesis.Eight different treatments were used in the research.They were:nitrogen fertilizer,phosphate fertilizer,potassium fertilizer,NP compound fertilizer,NK compound fertilizer,PK compound fertilizer,NPK compound fertilizer and CK(non-fertilizer).The results showed:(1)Application of fertilizer(NPK treatment)had most obvious growth promotion to Da Hong-mountain Lindera megaphylla,and the treatments used N fertilizer,NP fertilizer to the promotion of seedling growth were also relatively obvious.(2)Photosynthetic rate did not change seriously,NPK fertilizer treatment had the highest photosynthesis.