Effects of solution extracted from vermicompost Reporter :Liuping Major :plant nutrient
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Effects of solution extracted from vermicompost
Repor ter :Liuping Major :plant
nutrient
Introduction
Vermicompost is the product of organic solid waste , digested by ear thworms, with the advantage of high porosity, f ine ventilation and drainage per formance ,as well as strong water retection capacity .
Aim to provide a technical guidance for selection organic , environmental and economical edible vegetable seedlings substrate prescription and a theoretical basis on resource uti l ization .
Material and methods
Maize seedlings /capsicum seedlings/Brassica pekinensis
Methods : hydroponic culture /pot incubation test/ foliage spraying
Microelements
mg/L
H3BO3 2.86
CuSO4·5H2O 1.81
ZnSO 4·7H2O 0.22
MnCl2·4H2O 0.08
H2MoO4·4H2O 0.09
Macroelements
g/L
Ca(NO3)2·4H2O 1.18
KNO3 0.51
MgSO4·7H2O 0.49
KH2PO4 0.14
Fe EDTA 0.005
HoaglandArnon
Nutrient solution formula
Extraction solution
Vermicompost : disti l led water=1:1(V:V)
Stir heavily per 8hours (4times in total)
Centrifugal to separate
Store in a 4 refrigerator℃
Nutrient solution
Extraction
Treatment Ⅰ
Treatment Ⅳ
Treatment Ⅲ
Treatment Ⅱ
Chlorophyll content
Nutrient (N) Nutrient3: Extraction1 Nutrient1: Etraction1 Extraction(E)
Fresh Root-Shoot Ratio
E E1: N1 E1: N3 N
Dry Root-shoot Ratio
E E1: N1 E1: N3 N
Length(cm)
ProjArea(cm2)
SurfArea(cm2)
AvgDiam(mm)
E 563.21 19.90 62.50 0.35
E1:N1 556.80 21.54 67.66 0.39
E1:N3 635.10 24.46 76.86 0.38
N 582.67 20.00 62.85 0.36
Root analysis system Type: WinRHTZ 2005a
LenPerVol(cm/m3)
RootVolume(cm3)
Tips Forks Crossings
E 563.210.56
665.67
1512.00
295.33
E1:N1556.80
0.65704.0
01695.0
0327.33
E1:N3 635.100.75
928.00
2121.67
408.67
N582.67
0.54715.3
31424.0
0285.00
Root Length Parameter
Root Surface Area Parameter
Planned work
Capsicum seedlings sampling and cultivating
Set up more than 7 treatments in propor tion of N,N8:E1,N4:E1,N1:E1,N1:E4,N1:E8 and E, with 3 replications.
Foliage sprayingDetect the elements of extracted
solutionMicromorphological analysis
Thin section investigation Ultrathin section Master Ultramicrotomy and be able
to use UltramicrotomePreparation of thin section Separation of microorganism and
analysis of microbial activityFinally determine causes for
vermicompost’s promotive ef fect on root
