Soybean ribbon composite planting technology is aimed at the multi-crop planting habits in dryland in China. It uses corn-soybean, potato-soybean and other soybean intercropping intercropping techniques, integrating varieties, expanding and shrinking plants, sowing date adjustment, and reducing fertilization. The technical system of single technology such as green weeding, chemical regulation, and machine broadcaster.
Compared with conventional technology, the main crop yield (such as corn and potato) using this technology is equivalent to the original yield, and the new crop is 130-180 kg/mu, and the intercropped soybean is 100-130 kg/mu. The utilization rate is increased by more than 10%, the acreage of nitrogen fertilizer is more than 4 kilograms, and the increase of income is 300-400 yuan. At the same time, the use of soybean root nodule nitrogen fixation, mechanical mites returning to the field and no-tillage direct seeding can improve soil aggregate structure and increase soil organic matter content. Increase the effect of soil fertility.
1. Select the variety. The symbiotic corn is selected from the high-yield varieties with compact plant type, suitable for close planting and mechanized harvesting; the soybeans are selected for medium-late maturity summer soybean varieties with tolerance to yin and tolerance, and the intercropped soybeans are suitable for yin, tolerance, and lodging. Soybean varieties.
2. Expand the spacing. Use 2BYSF-2 and 2BMZJ-4 and other soybean strip composite planting special fertilizer planter specifications with spacing, corn belt and soybean belt intercropping, corn belt 2 rows (line spacing 40 cm), soybean belt 3 lines (row With a spacing of 30 cm), the distance between the corn belt and the soybean belt is extended to more than 60 cm, and the corn belt and the soybean belt are interannual rotation.
3. Shrinkage distance. The distance between soybean plants is reduced to 8-10 cm, which ensures that the density of symbiotic crops (such as corn plants 10 to 12 cm) is similar to that of monoculture.
4. The broadcast period. In the seasonal arid zone, early-sown corn and late-sowed soybeans were used to avoid drought; in the Huang-Huai-Hai area, wheat was sown after harvest.
5. Control prosperous. Soybean seeds with Uniconazole dry seed dressing (5% Uniconazole wettable powder 12 mg / kg), soybean branching and initial flowering period with Uniconazole stem and leaf spray (5% Uniconazole wettable powder 24 ~ 48 g/mu).
6. Nitrogen reduction fertilizer. Fertilization is applied to corn and soybean by sowing and fertilizing, nitrogen fertilizer is applied according to the nitrogen requirement of normal corn, soybean is not applied with nitrogen fertilizer, and phosphorus and potassium fertilizer are appropriately added.
7. Remove weeds. After sowing, the herbicide was blocked with 96% refined metolachlor EC; the post-emergence stems and leaves were directionalally weeded, the soybeans were treated with 15% quizalofop-ethyl emulsifiable concentrate and 25% sulfamethoxazole emulsifiable concentrate, and the corn was treated with 75% thiophene sulfonate. Long WP.
Note: When selecting the variety, pay attention to the coordination with the symbiotic crops. The symbiotic corn varieties should not be dispersed and tall. The seeding depth of the planter, the amount of seeds, the amount of fertilizer used, and the training of agricultural machinery must be adjusted before planting. Seeding whole seedlings; if the effect of closed weeding is not good, stem and leaf treatment should be taken in time; pay attention to prevention and control of root rot, black-spotted fly and other pests and diseases.
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