3种柱花草磷营养特性研究初探

[目的]探索磷对柱花草的影响。[方法]利用盆栽试验,研究了热研2号,热研5号和热研13号3种柱花草牧草在磷水平为0(P0)、0.2(P1)、0.8(P2)、1.6(P3)g P2O5/kg土条件下的生长和养分吸收情况。[结果]结果表明,磷促进了柱花草的生长、植株干物质积累和植株对磷和氮量的吸收。综合考虑各生长指标,选择P2水平,即0.8 g P2O5/kg土作为最佳磷水平。而3种柱花草中,热研二号柱花草相对来讲是最优的品种。[结论]适量的磷对柱花草的生长具有一定的促进作用。

Preliminary Study on the Nutritional Characteristics of Phosphorous of Three Stylo(Stylosanthes guianensis cv.)

[Objective] The research aimed to discuss the phosphorous effects on stylo.[Method] Pot experiments were conducted to study the growth and nutrient assimilation of 3 stylo(Stylosanthes guianensis cv.) added different amount of P.There were 3 variety of stylo,including Stylosanthes guianensis cv.Reyan No.2,S.guianensis cv.Reyan No.5 and S.guianensis cv.Reyan No.13,and 5 levels of P consumption,including 0(P0),0.2(P1),0.8(P2) and 1.6 g P2O5/kg soil(P3).[Result] The results obtained revealed that P increased the growth,accumulation of dry matter and the assimilation of P and N of S.guianensis cv..The level of P2(0.8 g P2O5/kg soil) was the most optimal according to consideration of all indices of growth,and S.guianensis cv.Reyan No.2 was the most optimal of the three variety after taking into account of the growth indices of three stylo.[Conclusion] Proper level of phosphorous have promotion effects on growth of stylo.