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Key Cultivation Techniques for Soybean Deep Loosening, Narrow-Row, Flat Sowing and High-Density Planting

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Soybean deep loosening, narrow-row, flat sowing and high-density planting is another "new high-yield cultivation model" following "ridge three" and "large ridge density." It integrates advanced techniques such as deep loosening and rotary tillage for seedbed preparation, uses fertilizer to support density and density to increase yield, increases the canopy leaf area index, and improves light interception rate, achieving cost savings and efficiency gains in soybean production. Over two years, Luobei County promoted and planted 16000 mu in Tuanjie, Fengxiang, Zhaoxing and Taipinggou, with an average yield of 206 kg per mu, a 43% increase over the control.

Soybean deep loosening, narrow-row, flat sowing and high-density planting is another "new high-yield cultivation model" following "ridge three" and "large ridge density." It integrates advanced techniques such as deep loosening and rotary tillage for seedbed preparation, uses fertilizer to support density and density to increase yield, increases the canopy leaf area index, and improves light interception rate, achieving cost savings and efficiency gains in soybean production. Over two years, Luobei County promoted and planted 16000 mu in Tuanjie, Fengxiang, Zhaoxing and Taipinggou, with an average yield of 206 kg per mu, a 43% increase over the control. Its main cultivation techniques are as follows.

I. Crop Stubble Selection and Seedbed Preparation

Select @#@245@#@ stubble, corn stubble and one-year soybean stubble, on level ground with deep plough layer and medium to above-medium fertility; deep loosening depth 35-40 cm, rotary tillage depth 12-15 cm, harrow fine and level, then wait for sowing.

II. Variety Selection and Seed Treatment

Choose short-stalked or semi-short-stalked varieties with strong stalks, lodging resistance, fertilizer responsiveness, density tolerance, high yield and good quality, strong stress resistance, and suitable maturity. At present, the main varieties are Hefeng 42, Hongfeng 11, 97-04, Heihe 25, etc. Before sowing, carry out seed cleaning, with purity above 98% and germination rate above 95%, and use soybean seed coating agent. Fertilization: where conditions permit, on the basis of applying 1000 kg of high-quality farm manure per mu, use 15 kg of diammonium phosphate, 7.5 kg of urea, and 5 kg of potassium fertilizer per mu.

III. Sowing Method, Sowing Date and Density

Use the 2BT-3 precision seed drill produced in Yilan, mounted and operated by a small four-wheel tractor, with an operating width of 130 cm large ridges, sowing 6 rows on the ridge, double strips 12 cm wide, small row spacing 22 cm, large row spacing 50 cm, sowing depth 3-5 cm. Finish sowing from May 5 to 20. Press as you sow. Keep 2.3-3 million seedlings per mu.

IV. Chemical Weed Control

① Pre-emergence closed weeding after sowing.

Use 72% Dual 130 ml + 48% Command 50 ml + 70% Sencor 20 g per mu, mixed with 500 kg of water and sprayed

or use 43% soybean-acetochlor mixture 250 ml per mu mixed with 500 kg of water and sprayed.

② For individual plots with poor closed weeding effect, post-emergence treatment may be used.

Use 12.5% Nabu 100 ml plus 25% Huwei aqueous solution 66 ml per mu mixed with 450 kg of water and sprayed.

V. Field Management

① According to pest forecasts and field disease occurrence, promptly control pod borer and gray leaf spot.

② Spray foliar fertilizers such as Huimanfeng before and after flowering to promote ripening, improve quality and achieve high yield.

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