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- W2359317570 abstract "The decline in yield and quality of flue-cured tobacco caused by long-time continuous monocropping and irrational fertilization have been the serious problems in flue-cured tobacco production in east of Gansu Province.A field experiment was carried out in Zhengning County,Gansu Province in 2009 to study the biological effects of bio-organic fertilizer on rhizosphere nutrient regulation and its biological effects.The results showed that the microbial organic fertilizer treatment(BOF)not only significantly increased the richness of the rhizosphere bacteria and the number of dominant species,reduced the rhizosphere soil fungi/bacteria ratio,but also improved the quantity of rhizosphere soil organic matter,available nitrogen and available phosphorus.The improvement of the rhizosphere soil biological activity and availablenutrients amount facilitated the growth and development of the flue-cured tobacco.After applying BOF,leaf chlorophyll content(SPAD),leaf number,dry weight and leaf area index in the later growth stage were all significantly higher than those of the control(CK)in the whole reproductive period.In the BOF treatment,potassium content of upper,middle and bottom leaves increased 30.20%,26.30% and 50.50%,respectively,compared with CK,while nicotine content increased 29.85%,29.85% and 29.85%,respectively.BOF treatment increased the sugar content of tobacco leaves,narrowed the difference between total sugar and reducing sugar,making tobacco Schmuck value(sugar/protein)tend to be the optimum scope.The yield and production value of BOF treatment increased 23.20% and 12545RMB/hm2 than CK,respectively;the proportion of superior tobacco increased by 16%,and its value was 12363RMB/hm2 more than CK.By improving the biological activities of microorganism in the rhizosphere and increasing the effective nutrient content,a favorable environment for the high yield rhizosphere of flue-cured tobacco was created." @default.
- W2359317570 created "2016-06-24" @default.
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- W2359317570 date "2015-01-01" @default.
- W2359317570 modified "2023-09-23" @default.
- W2359317570 title "Effects of bio-organic fertilizer on rhizosphere nutrition regulation and its biological effects" @default.
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