根际微生态保健剂对杨树生长及抗病性的效应

Effects of Rhizosphere Medicine on the Growth and Disease Resistance of Poplar

研究了不同成分配比的根际微生态保健剂在拌土和蘸根两种施用方式下,对河北杨造林成活率、树高、胸径、树皮相对膨胀度、烂皮病发病率、感病指数以及树体电容的影响。结果表明,根际微生态保健剂对造林成活率、树皮相对膨胀度、树体电容、树木的高生长和胸径生长具有明显的促进作用,对林木的发病率和感病指数有明显的降低作用。同时,拌土处理下树木的各项指标显著优于蘸根处理。保健剂的4种主要成分菌剂、植物生长调节剂、复合肥以及保水剂对树木的作用特点也不同。在此基础上,确定了最佳杨树抗逆保健的各因素水平以及施用方法,优化后的抗逆保健剂成分质量配比为:菌根制剂74.997%,保水剂10.000%,复合肥14.999%,植物生长调节剂0.004%。

The influence of rhizosphere medicine in different components and application methods on the survival rate, height, DBH, relative turgidity of bark（RT）, morbidity, contagious index and tree capacitance of Populus kopeiensis were studied. The results showed that the rhizosphere medicine could increase survival rate, height, DBH, relative turgidity of bark and tree capacitance and decrease morbidity and contagious index dramatically. Two kinds of application methods were adopted： one was called the soil-mixed method and another called the root-dipping method. The soil-mixed method was more effective than the rootdipping method. The medicine was composed of fungus, IBA, compound fertilizer and aquasorb. The effects of four components of medicine on the growth and health of trees were different. Finally, we made sure the more effective proportion of four components of the medicine that was composed of 74. 997% fungus, 10. 000% aquasorb, 14. 999% compound fertilizer and 0. 004% IBA.