菌肥灌根对草地早熟禾的生长与抗病诱导作用初探

生物肥料具有促生和控病双重效果，在生产中发挥着巨大作用。为研发一种新的生物肥料，调查了单施极可善+倍绿草肥、单施拮抗菌CE发酵液和混施菌肥（极可善+倍绿草肥+拮抗菌CE发酵液）3种不同施肥处理对草地早熟禾（Poa pratensis）腐霉枯萎病（Pythium graminicola）发病面积、发病程度以及草地早熟禾叶片宽度的影响，并测定不同施肥处理对草地早熟禾体内防御酶活性的变化。结果表明，单施拮抗细菌对抗病性诱导效果最佳，草地早熟禾体内各种防御酶活性均有不同程度的提高；单施极可善和倍绿草肥具有较好的促生作用，草地早熟禾叶片宽度高于其他处理；而菌肥混施虽然也有较好的抗病性的诱导作用，但没表现出促生作用。

Effect of bacterial manure pouring root on growth and induced disease resistance of Poa pratensis

Bio fertilizer plays dual roles in encouraging growth and improving disease resistance of plants. An experiment was conducted to develop a new bio fertilizer by determining the effect of different combination of antagonistic bacteria and softguard fertilizer and Double?Green on disease indexes of Pythium graminicola, leaf width, and defense enzyme activities of Poa pratensis. The results of this study showed that antagonistic bacteria was best for the induced disease resistance of P. pratensis because it increased the content of POD, PAL, PPO, β 1,3 glucanase and SOD activities of P. pratensis. The softguard fertilizer and Double?Green encouraged the growth of P. pratensis when compared to antagonistic bacteria. Mixed application of CE antagonist’s bacteria and fertilizer improved the induced disease resistance rather than growth of P. pratensis.