生物炭对玛瑙红樱桃土壤微生物和养分的影响

以贵州省主栽樱桃品种玛瑙红为试材,探讨生物炭对土壤微生物和养分的影响,旨在为玛瑙红樱桃的丰产优质栽培及生物炭在果树上的应用提供理论依据。试验设置0(CK)、5(C1)和10(C2)kg/株3个生物炭施用量,结果显示:在始花期,C1处理显著提高细菌、反硝化细菌数量,C2处理显著提高好氧固氮菌数量;在盛花期,生物炭的添加显著提高了土壤微生物多样性和反硝化细菌数量;在结果期,C2处理显著提高真菌数量;添加生物炭处理提高了土壤pH值和有机质含量,但对土壤养分的影响因物候期而异。结果表明,生物炭的添加能提高玛瑙红樱桃土壤微生物量、微生物多样性、土壤养分,但提高效果与植物所处生长状态有关。

Effect of biochar on soil microbial and nutrients of Prunus pseudocerasu'Manaohong'

To investigate the impact of biochar on Prunus pseudocerasu soil microbial and nutrients property,one of the P.pseudocerasu varieties'Manaohong'cultivated in Guizhou was used as materials,aiming at improve the production and quality of the P.pseudocerasu and provide a theoretical basis for the application of biochar on fruit.Test was set up with the three different biochar application rates,including 0 (CK),5 (C1) and 10 kg (C2) pet plant were applied in the protected field.Results showed that at the initial blossoming stage,C1 treatment could effectively increase the quantity of bacteria,denitrifying bacteria and C2 increase the quantity of azotobacter significantly;in the full-bloom stage,the treatment of C1 improved the quantity of denitrifying bacteria and the quantity of azotobacter,denitrifying bacteria were significantly increased under the C2 treatment.Meanwhile,the microbial diversity on soil with the treatment of C1 and C2 were significantly higher than CK;on the fruiting stage,the quantity of fungi was effectively increased under the C2 treatment;applying biochar increased the soil pH and the content of organic matter,but the impact on soil nutrients varied with the phenological period.Our research indicated that applying biochar on soil could increase the amount phenophase and diversity of microorganisms of P.pseudocerasu'Manaohong',as well as soil nutrients,while the raising efficiency was close related to the growth status of plants.