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Non-flooding Rice Farming Technology
In Irrigated Paddy Field
China National Rice Research Institute
Dr. Tao Longxing
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SRI to China
Modification and Improvement
Ideas and thought
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Non-flooding Rice Farming In Irrigation Paddy Field
Main technical components of NFRF
1. Use of organic fertilizer
2. Super rice or super hybrid rice & direct sowing
3. Controlled water management/Physiological requirement by plant
4. Weeds control by “Gucaobai”,senescence control by “Lilibao”
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1、 Use of organic fertilizer
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Total/ha
N: 225 kg
P2O5: 90 kg
K2O: 135 kg
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2、 Plant super rice or super hybrid rice
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Strong tillering ability
Big root system
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Row-direct sowing
Thinning and adjustment
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Traditional(Deep water irrigation) NFRF(Dry-wet alternation)
Controlled-water management
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1. 1st time Watering: steeping the manures and fertilizers, field leveling ,seedbed making , direct sowing;
2. 2nd time watering at 3~4 leaf stage: milk-fertilizer application and pesticides;
3. 3rd time watering at 7~8 leaf stage: Tillering fertilizer application and pesticides;
4. 4th time watering at 12~13 leaf stage: Panicle fertilizer, pesticides and fungicides.
Water and fertilizer management
Four times full irrigation only
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1st time : steeping manures and fertilizer, field leveling and direct sowing
Sowing rate: 13.5~15 kg/ha
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2nd time : milk-fertilizer application and pesticides
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3rd time : Tillering fertilizer application and pesticides
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4th time : Panicle fertilizer( P、 K) , pesticides
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Dry-wet alternation
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Important: Keep wet soil condition during filling stage for a good grain setting, usually keep a narrow water in the slot.
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Dew in early morning
Judgment of water stress
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Weeds control by “Gucaobai”谷草败
CK Gucaobai
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Lilibao CK
Senescence control by “Lilibao” during later maturation
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Non-flooding Rice Farming In Irrigated Paddy Field
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0.0
0.2
0.4
0.6
0.8
1.0
1.2
I T PT YD H YR
发育时期 Development stage
Lea
f ar
ea(m
2/h
ill)
IT: Productive tiller stage, PT:max tiller stage, YD: young panicle init. , H: Heading, YR:Yellow rip.
NFRF
TRF
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NFRF
TRF
0
2
4
6
8
10
12
14
I T PT YD H MH WH YR
单丛根重
g/h
ill R
oot
dry
wei
ght
per
hill
Development stage
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NFRF
TRF
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NFRF
0
20
40
60
80
100
0 25 50 75 100
125
150
稻株切片段高度 Plant height(cm)
光照强度百分比
及切段干重
gLIDWLA
TRF
0 25 50 75 100
125
150
稻株切片段高度 Plant height(cm)
0
500
1000
1500
2000
2500
3000
切片段叶面积
Leaf a
rea(cm
2 )
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0
5
10
15
20
25
I H H FH MR WR YR
发育时期 Development stage
Ph
otos
ynth
etic
rat
e(C
O2u
mol
/m2.s
)NFRF
TFR
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SRI
0
50
100
150
200
250
300
I H H FH MR WR YR
发育时期 Stage
器官干重
Org
an d
ry w
eigh
t(g/
hill) TRF
I H H FH MR WR YR
发育时期 Stage
Yellow leafand sheathPanicle
Leaf
Sheath
Stem
47.9% 34.7%
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Welcome to CNRRI