Non-flooding Rice Farming Technology

In Irrigated Paddy Field

China National Rice Research Institute

Dr. Tao Longxing

SRI to China

Modification and Improvement

Ideas and thought

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”

1、 Use of organic fertilizer

Total/ha

N: 225 kg

P2O5: 90 kg

K2O: 135 kg

2、 Plant super rice or super hybrid rice

Strong tillering ability

Big root system

Row-direct sowing

Thinning and adjustment

Traditional(Deep water irrigation) NFRF(Dry-wet alternation)

Controlled-water management

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

1st time : steeping manures and fertilizer, field leveling and direct sowing

Sowing rate: 13.5~15 kg/ha

2nd time : milk-fertilizer application and pesticides

3rd time : Tillering fertilizer application and pesticides

4th time : Panicle fertilizer（ P、 K） , pesticides

Dry-wet alternation

Important: Keep wet soil condition during filling stage for a good grain setting, usually keep a narrow water in the slot.

Dew in early morning

Judgment of water stress

Weeds control by “Gucaobai”谷草败

CK Gucaobai

Lilibao CK

Senescence control by “Lilibao” during later maturation

Non-flooding Rice Farming In Irrigated Paddy Field

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

NFRF

TRF

0

2

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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

NFRF

TRF

NFRF

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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

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3000

切片段叶面积

Leaf a

rea(cm

2 )

0

5

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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

SRI

0

50

100

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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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