2.000 nông dân và tổ chức luận văn so sánh năng suất và khả năng chịu ngập của tám giống dòng cao lương trồng trong ch

32444^#-P]?C%i'C1%^ '^:l[//(
'$1:!6`'(/%'Cs%C#A:[2
¶<L##¶C“'*bMkZd>ÁMZ"#1
6³#[wMo•%^##-"-/9'j#56a%1
<=&m/$9i'CH#zCC.&1[C<L#ci'CP%
Ai'j#"#²c#'"*C.'#/-a
1a#9'^:l2ZP.&%^ +kC#7'i';/#N:
<L&&%#'y2ET^-CG
Chương 3: VẬT LIỆU VÀ PHƯƠNG PHÁP NGHIÊN CỨU
3.1Vật liệu nghiên cứu
*#K#*#x-l#C&<L#/s6^*/k!;.%c%
C/:!#*#<=(vR´dQ2
Bảng 5:C11#*#x-l#C&<L#"###%
*#x-l#
?
*#x-l#xF
'
#'"#* N
I 3bIbpbq RC%t% dÂttC&6
19
3 RrDxp d'-C dÂttC&6
| •R3IrII #C-C #.t
r wry dQ #.t
D 2rKqp3 t.C dÂttC&6
p d3pW d'-C #.t
q 34x| t:C #.t
K Z*?#E[C<L#G MNPbQbT
d*rlA'/C#=;&_vLi'C#*#
o#oR('"#P.<_#6|3%/-C/<8L/<8
-P./j#<8<8/0
MP:k'tI4p/DJ#/6C&²r4/K#/&P&#|4q/rD#2

'*vP'oPWC'-2
o#o#l##%W c'/: C%#1/: 
Ãt&-C&/0
3.2Phương pháp nghiên cứu
3.2.1 Phương thức canh tác
dnC$$<=z²L/C'k!8P}'
L8\&|I/$!+#c.('2
t%{('#t:*/-j#Ht#
&$$&/C'q#.\C:²P.vC&%{('CP.2
MP:k:kPt^#?I34bp4bp42
Wk&kÄ&P
Wk&c3EIDdGIx|%ÅIx3&PÅIx36C&
Wk&c|E|4dGIx|%ÅIx36C&
Wk&crErDdGIx|%
R)%k<8<8%{#.%!&c2%²#'*i'1 
#%2T'#*6P.l²2|23232W*#%
#%:*ta?#f'21%#%
?&K#*#x-l#RC<L#/:;.&c&z&/#k:C&c&z&:*
16;)#['#(/l:*&c&z&:*1)#'$
20
K K p |
| K 3 D
3 K D r
I | q r
r p I p
K D q r
D K I |
I r 3 p
I q I r
K | p D

I | p 3
3 D D 3
3 p r
 3dL":*#%
3.2.1.1. Thí nghiệm so sánh năng suất #"%r&c&z&
Các chỉ tiêu và phương thức theo dõi
Đo chiều cao  6<Ck:^#v#*P.Ak&1C
$BCP./6P.CCv#*P.AkC/ID#.%!
&c2
Số chồi  A%$;1"BCCP.('/ID#.A%
%!&c2
Sinh khối: RPH#&<=#P/&1C'6'%f'
'C&c bRP.q4#.C'6#t2
b '2
Năng suất  C&<L#<='L6^/&%
!•%#C.<86P2H#&<=#u<=i'.9!•%
'•:•#^#?
¾
P
+EI44b•%!&NPG
¾
E•%!'•EIr±GG
¹
Kp
21
¾
E•%!'•G
H#&<=#i'9•%!'•
¾
P

H#&<=#&NP
3.2.1.2 So sánh khả năng chịu ngập
q4#.C'6#t/%{#*#x-l#&$.|('E|&z&G/<=z
#:"k6;)##}<8/:*#f'/|&z&2
{#.#(&I4%/#(CI/3%2
Theo dõi các chỉ tiêu:R9'C
d*&1
_#CP.A
 |hn&F#(#Cq4d
Hàm lượng vật chất khô: P%&<=#$6^#
P&1C&<L#>C_a%q4#.C'6#t6'2
M<L#1+1[%&<=#<8>#1#c6^2
 d$.6^*#%f'#B$.6;#|N>)#
&<=#C2
 RP%f'kH#&<=#6;#|#*#+1
H#&<=#%•'<86$.2
22
 d$.>I4D
4
R#_#C$3r#_
 Zz*: N•%PCk<=H#M
Æ
I
2
 d$.A>!I4D
4
R#|4N2
 Zz*: N•%PCk<=H#M
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2
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3
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R^#?
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±TR¹+
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Hàm lượng protein  P%&<=#t#P&1C
&<L#>C_a%q4#.C'6#tC'6'2 t
<L#1Ãt&-C&
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: Ãt&-C&D4%&z: C%#12  '  *  #}C
H#&<=#*##%k?C%f'*##%]#
&H#&<=#BC%f'E¾G2
2. R&c&<=4/|#{=$+N14/q%&
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|2 R^#1z: Ãt&-C&z: C%#1?C%f'
&:A&&l^#1k:!9'/9'\>
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$.k6*s#:C.&/%f''.aC#%'t
^9' )#!A^%f'2Z'A6%f'
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r2 R<#$*8:!<#$%;A2
23
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C+  :  3±  Ek  '*  n  t.&  t-  Å
W%t& #ttG  :  C%  #1 D4%&2Zz
: (.Cc'%NBC*##<##(
#C+:2
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3D4%&E1a': C%#1/A'-j#
<8<86'.a%f'G2´nC&c:•#
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'.a%'2'#-[#: #(+$+\D4%&2
o : C%#1a?#A:•#1?C
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Z[P'•!A6%'+C'.aC#
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26
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‹R$}'L r/4r± '#: 
E-g'G p/J3%#xI44# $
EC]G I/rK%tixI44# ´$C
RCEC]G D/pq%tixI44# '
ME-g'G J/ID% '
@AB)CB0+,D0DD
1EFGH%?
Điều kiện sâu bệnh:
 '###C|4#.C'6#tEdGc'A
1#*#9'6^#:[P':$^#/##C.s
1>#*#d3pW9'$/<#k6^#;<>#%Ai'1
 <>#BC1#*#2##CDDd#*#wry
#*#34x|:[$s#/\C'#.&P.i'C1#*#61/
-#%P.^#'-<=
B^#2 ##C]:^#c'A1#*#9':[:
1.&1Ev#*#wry#*#34x|G2
4.2. Đặc điểm nông học
4.2.1. Thời gian sinh trường của cây
_a%:sc'N:^#/'#$_#C<>#>
1#*#$61C'2
Bảng 9: _#C<>#BC1#*#
d *#x-l#
_a%:s
c'N:^#
EdG
_#C'#
$E#.G
_#C
<>#

EdG
I
3bIbpbq q4 J: IIp
3
RrDxp pJ J: I4D-
|
•R3IrII IIIC IDC IK4C
r
wry Dpt I4: KJ¿
D
2rKqp3 Jp: J: I|4:
p
d3pW ÛID4
q
34x| DJ- K I4It
K
Z*?# Dqt q- KK¿
W
qr J IID
27
1:
ÜÜ ÜÜ ÜÜ
RTE±G
I/| K/I 4/p
Chú thích:IIJK'BLMN
0OPPK&Q&OP)LRS)C
)K'BTUNVW 
*#wryEDpdGk_a%:sc'N:^#8%<L#
<L#8#*#*?#EDqdGk61:F#¶C81
#*#61/#*#k_#C:sc'N:^#%'!$&#*#

•R3IrIIEIIIdG61:F#¶C81#*#l&/C'
_#CIII#.#*#d3pWf<Ck-$''N:^#2
*#•R3IrIIm#&#*#k_#C'#$-$ID
#./k61:F#¶C81#*#612*#k_#C
'#$#s$&#*#*?#Eq#.Gk61:*#6
81#*#612*#3bIbpbq/RrDxp/wry/2rKqp3/34x|EKb
I4#.Gk_#C'#$<L#<L#C'2
_#C<>#BC#*#*?#EKKdG#*#
wryEKJdG#s<L#<L#C'k61:F#¶C
81#*#612*#k_#C<>#-$&#*#
•R3IrIIEIK4dG/k61:F#¶C*#681#*#
l&2*#d3pWkALID4#.f<CN:^#2
d<>#BC(o'!.A'*-'.9#;
(<_#<>#6,%>!*[L&8
C.]'6¸9!/<<L#*%19%<L#*
$%:C#.2!ka#P.A(/;<>#BC
!&<>#BCP.&&!#.%2
WC#.!C=i'C#=2)#&'`$
6^2WC%!$#;%1L<8^$P.
<>#%L2d#['#>1%?!
61C'BCP."#;i'Ci'1 A1#&P'-2
†1#$cA<>#1aBCP./
11#;<>#&(B.A'-<_#!11#/•%$
28