不同施肥处理对麻疯树幼林生长的影响

Effects of Different Fertilization Treatments on the Sapling Growth of Jatropha curcas

采用随机区组试验设计,对麻疯树幼林进行了施肥配方试验。结果表明:(1)N、P、K混合施肥能显著促进麻疯树的地径、冠幅乘积和树高的生长;(2)仅施用N肥也能明显促进主干地径生长,但仅施P、K肥对地径生长影响不大;(3)N肥和P肥混合施用能显著促进麻疯树幼树冠幅生长,仅单独施用N肥、P肥和K肥对麻疯树冠幅生长促进作用不明显。

Jatropha curcas saplings were used to test fertilizer application effects by randomized block design. The compound fertilizers consisted of N, P and K. The result indicated that compound fertilizers had significant accelerating effects on growth of their base diameter, crown surface, height and fruit producing, but didn＇t affect their kernel yield and oil yield. Only using N fertilizer would significantly affect the base diameter of Jatropha curcas saplings,while only using P fertilizer or K fertilizer had no big influence. The compound fertilizers containing N fertilizer and P fertilizer could conspicuously affect the growth of their crown surface, but only individual using N fertilizer, P fertilizer or K fertilizer had no obviously accelerating influence on the growth of their crown surface.