Effects of bio-organic fertilizer application on the continuous cropping obstacles of Chrysanthemum morifolium Tzvel.‘ Chuju’
[Objectives] Monoculture leads to declines in both quanlity and quantity (productivity) of Chrysanthemum morifolium Tzvel.‘ Chuju’.In order to explore the best disease control project,the effects of bio-organic fertilizer(BOF) on the productivity of C.morifolium Tzvel.‘ Chuju’ were investigated in this study.[Methods] BOF was applied in nursery and/or transplanting soil of ‘Chuju’ in field experiment.Four different treatments were designed,including:1)Both nursery and transplating soil untreated (CKn+CKf) ;2)BOF was applied in only nursery (BOF+CKf) ;3)BOF was applied in transplanting soil (CKn +BOF) ;4)BOF was applied in both nursery and transplanting(BOF+BOF).The root activity,the copy number of Fusarium oxysporum in the rhizosphere soil,sucrase activity,catalase activity,urease activity in the rhizosphere soil;total flavonoids,yield and key physiological indicators of chrysanthemum were evaluated.[Results] The results showed that BOF could not only increase the total flavonoids,yield,and evaluated enzyme activities in the rhizosphere soil,but also has higersuppress effectiveness of the number of Fusarium oxysporum in rhizosphere soil.The key physiological indicators such as shoot height,stem diameter,crown diameter,root/shoot ratio and shoot fresh weight also increased as BOF application.Compared with CKn+CKf,root activity and root fresh weight in treatment BOF+CKf were significantly increased,but other key physiological indicators were not.Among all the treatments evaluated,BOF+BOF showed the best improvement abilities in the yield,total flavonoids,leaf SPAD value and nitrogen contents,which were 267.47 g per plant,32.41 mg· g-1,19.67 ％ and 2.13 mg· g-1,respectively; they increased 34.71％,95.71％,73.76％ and 97.22％ respectively more than CKn + CKf.[Conclusions] Among all the tested treatments,BOF applied in both nursery and transplanting soil had pronouced enhancement in some key evaluated parameters and plant productivities.Thus,we recommended that BOF applied in both nursery and transplanting soil should be considered in future disease controlling stratigies in the field work.
国家科技期刊平台
NSTL
万方数据
维普
