The 3-S System of The 3-S System of Rice CultivationRice Cultivation

Prof. Jin XueyongNortheastern Agricultural

UniversityHaerbin, Heilongjiong Province,

China10th National Workshop on High Yielding Rice, Haerbin

The ‘3-Super’ System of Improved Cold-Zone Rice Production

• Use the most productive variety for conditions;

usually super hybrid rice variety will be best

• Super-wide spacing between plants – single

seedings @ 10,000 plants/mou (~ 25x25 cm)

• Farmers will get super yields if using also other

favorable growing conditions, such as water

management and increased soil organic matter

Normal 3-S

水稻三超栽培技术原理延扩水稻营养时空，释放水稻个体生产力，强化双冠性能，促进水稻“源足、库大、流畅”而大幅度增产。

Field InspectionField Inspection

With 3-S, 45-day-old seedlings are transplanted (older seedlings are needed with colder climate)with wide spacing and no flooding of the fields, reducing water by 50% and seed rate by 80-90%

Seedling for Seedling for transplanting -- and transplanting -- and resulting plantsresulting plants

Vegetative GrowthVigorouVigorou

s s tilleringtillering

Vigorous roots

3-S roots on right

3-S with Different Varieties

423423

.

131131

.

422422

水稻优质、高产、抗病新品种 “东农 03-33”

3-S has good grain quality

Vigorous root development while in pots seen on right

Seedlings are started at the end of winter in plastic greenhouses

Seedling Production

Growth in Greenhouses

Seedlings Bundled for Transplanting

Wide Spacing of Plants

Average spacing 15 cm (13-17 Average spacing 15 cm (13-17

cm) by 40 cm (37-43 cm), 1-2 cm) by 40 cm (37-43 cm), 1-2

per hill per hill

Spacing Comparisons

Spacing (cm)Tillers/

m2

Grains/ panicle

Effective tillering

%

Grain weight

(g)Yield (kg/hm2)

% Increase

36×17 spacing 440.1 127.5 77.5 25.1 10913.1 --

43×14 spacing 445.1 133.7 77.0 25.2 11544.7 5.8

Growth of Plants

Tillering

Effects of Plant Density

Plants/hillTillers/plant

Grains/panicle

Fertile tillers (%)

Grain weight (g)

Yield (kg/hm2)

1 21.7 120.20 89.5% 24.03 11080.92

2 19.6 132.50 88.0% 22.77 10174.15

3 23.2 109.16 82.0% 22.09 9601.42

May 20-June 2May 20-June 2

Transplanting

Effect of Transplanting Date

Date Tillers/m2Grains/ panicle

Effective tillers (%)

Grain weight

(g)Yield (kg/m2) Rank

5-07 357.0 138.0 79.6 25.4 9960.8 5

5-14 357.0 143.0 81.3 25.6 10625.1 3

5-21 391.0 145.0 81.5 25.9 11967.5 1

5-28 391.0 143.0 81.3 25.7 11682.5 2

6-03 357.0 141.0 79.8 25.7 10323.4 4

3-S Results3-S Results

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