Nghiên cứu hàm lượng Nitrat trong rau thương phẩm vụ đông xuân 20132014 tại phường Túc Duyên thành phố Thái Nguyên và rau được sản xuất theo quy trình VietGap tại xã Huống Thượng – huyện Đồng Hỷ Thái Nguyên (Khóa luận tốt nghiệp)

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----------

:
- THÁI NGUYÊN

: Chính quy
Chuyên ngành :
Khoa
:M
: 2010 2014

Khoa

-


----------

----------

:
- THÁI NGUYÊN

: Chính quy
Chuyên ngành :
Khoa
:M
: 2010 2014
Gi

Khoa

-


-

và theo

S.

h

s

- KHMT -

cô

Sinh viên


:

:
2.

Trang
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:
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-

các

-

và
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úc Duyên ......................................................................................................34

3.4.3.

3.

:

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Duyên ................................................ 39
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4.2.1.

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...... 51

4.3.
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.... 56

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Túc Duyên ....................................................................................................... 66
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3

4.6.1
4.6.2
4.6.3
:

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Trang
... 11
- 2010 ...................................................................... 13
- 2007................. 16
....... 17
Thái Nguyên
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3
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3 t
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Thái Nguyên .................................................................................... 62
3

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3

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Trang
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3

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AND
ARN
RAT
BVMT
USD
WHO
FAO

NN & PTNN
BVTV
ILO
LHQ
Y
TP.HCM
TCCP
DDT
CS
TCVN
TCRS
UBNN
HTX
TTCN

THCS
QTRS
QCVN
BTNMT
KS
TS

: Acid Deoxyribonucleic
:T
Anh là
: Rau an toàn
:
:
,
:
:
:
:
:
:
:
:
:
:

:
:
:

:

:
:

guyên


1

1.1.

V

N

- 300g.
, chính
2

phân b

3

Nitrat (NO3-

nito
ua
3

này.

2

Nitrat (NO3-

soát

khoa,

S.

1.2. M
-X
:
+P

Nitrat

-

hai cánh

-

-

Nguyên (VietGap)
Nitrat,
-G

g


3

1.4.
-

n rau an toàn
u

Viet

-

Nitrat

1.5.
1.5.1.
-

m

NO 3

1.5.2.
*
-

- Quá t

viên


4

2.1. C
2.2.1.

cacboni

(P), Kali
Canxi (ca), Magie
(Zn), Mangan

Bo(B), Molypden (Mo),

Clo

ham gia
vào th

.

á nói riêng.


5

+

4

và NO3-, NO3- sau khi

3

Nitrat
Nitrat
Nitrat
Nitrat và

Nitrat
Nitrat
Nitrat reductaza, hypo Nitrit reductaza và hydroxylamine

cho Electron là NADPH.
Nitrat
-

-

3

2

Nitrat reductaza.
2

+
4

Nitrit reductaza
+
4

Nhóm NH3
NH3

- xetoglutamic
xit alamin, axit aspatic và axit

cytopl
to


6

Nitrat
Nitrat
Nitrat
2.1.2.

ra
, nhân công lao

uyên

31

:

1/

Nitrat trong rau và
Nitrat

2.2.
2.2.1.


7

Trong rau
-

- 75%, cà chua 75-78%,

trong quá trình o
(

theo Lê T

15

Caroten (
mg B1, 0,17mg B2, và 7mg C
- Bí ngô 0,06mg B1, 0,03 mg B2, và 8mg C
- Rau d 0,04mg B1, 0,14mg B2

9

n A), B1, B2, C, E và PP
- 99%

vv... T
60 -

B (B1

a

vitamin B
N


8

.(

vitamin

, 2009) 15

có
, 2009)

- 357mg%).
hóa

1,2g.

2007) 9

- 300g rau xanh/ngày
(
2.2.2.

H
(
Giang, 2014) 26

, 1996) 29


9

-

.

thanh

sàng

Xanh,
T

(

2014) 26
(

) 35


10

11 ,

(

2013)
Rau

(bí
(cà chua, cà
(

(
(t

goài

ra,
(

, 1996) 29

2.3.
2.3.1.

dùng.Theo

(2006). N

là
(

34


11

.
gia

Philippin
Liên Bang Nga
Brazil
Thái Lan
Italy

(ha)
17.999.009
8.266.500
3.400.000
525.000
500.000
207.000
195.000
195.000
150.000

145.000
144.000
110.000
75.000
11.050

(
138,829
171,790
102,941
133,500
88,000
162,802
318,966
115,385
62,800
162,802
180,556
280,412
200,000
771,801
t FAO 2006) 43

249,879
142,000
35,000
6,600
4,400
3,370
3,700

2,250
0,942
1,005
2,600
2,700
1,500
852,840

(149.140 nghìn USD); Pháp (132.942 nghìn USD); Canada (84.496 nghìn
USD); Trung Q

(

hánh, 2009)


12

các lo

(
, 2011) 27
2

- 20
2010, ngành

(

(

NN & PTNN, 1993)

2010) 40

(


13

2.3.2.
h

- 2010
(ha)

TT
1
2
3
4
5
6
7
8

1980
1990
2000
2006
2007

2008
2009
2010
(

(
2.164.800,0
2.933.458,5
5.632.264,4
6.380.149,1
6.559.430,2
6.202.435,8
6.313.417,3
6.732.774,0

220.000
98,40
261.100
112,35
452.900
124,36
536.914
118,83
531.257
123,47
529.851
117,06
524,937
120,27
121,64

121,64
FAO statistic, 2011) 42

ta

ha.

/ha
2000.


14

(
2.698.805,9

(trung
- 2000).

-

-

hâu -

-

2009) 15

-

-


15

theo vùng

(

2009) 15

rõ nét
phía b

(87%).
Tro
h
(Rau
, 2013) 23