不同配比的木醋肥对香樟林土壤性状的影响

Effects of Different Ratio of Wood Vinegar Fertilizer on Camphor Forest Soil

将不同配比的木醋肥施用于香樟林地中,通过测定施肥后林地土壤微生物数量、酶活性、土壤部分化学性质以及植物黄化相关指标的变化情况,旨在选择效果明显的配比应用于城市绿地绿化植物的养护中。试验结果表明,6种试验配方均能不同程度地改善香樟林土壤性状,主要表现在:微生物数量增加、酶活性提高、化学性质得到改良,同时香樟黄化也得到有效控制。低浓度木醋液中加入低量有机肥,对土壤微生物有一定的抑制作用,并且化学性质和黄化改良效果不如其他处理明显;从生产应用、使用价值等综合效果来看,中低浓度木醋液中加入木炭粉(木醋液︰木炭粉比例为1︰5(V︰M))和中高量有机肥的处理改良效果最好。

By using different ratios of wood vinegar fertilizer in camphor forest, the changes of relevant indexes of soil microbial number, chemical properties, soil enzyme activity and chlorosis index was studied. The results showed that all the six different ratios of wood vinegar fertilizer could improve chemical properties of soil, increase soil microbial quantity, enhance soil enzyme activity and control etiolation of camphora trees. Compared with contrast, the ratio with low concentration of wood vinegar and low organic fertilizer treatment was not as good as other treatments in inhibiting soil microorganism, improving chemical properties and controlling etiolation. Based on an overall consideration of various factors, the ratios with middle or low concentration of wood vinegar added charcoal powder （wood vinegar： charcoal powder ratio = 1 ： 5 （ V / M ） and middle or high organic fertilizer were better in use of urban afforesting and greening.