Strip compound planting technology of soybean and corn

Soybean-corn strip compound planting technology refers to the strip compound planting method in which soybean and corn are alternately planted in the same field.

This technology uses the growth characteristics of soybean and corn to realize the simultaneous planting of two crops in one field, and achieves various effects such as increasing crop yield, improving ecological environment and increasing farmers' income.

Specifically, the soybean-corn belt compound planting technology has the following characteristics:

The first is complementarity. The root distribution of soybean and corn is different. The deep root system of soybean can make use of nutrients and water in deep soil, while the shallow root system of corn is good at absorbing nutrients and water in surface soil. The planting of the two crops can complement each other and optimize the utilization of soil resources.

The second is to control pests and diseases. There are different kinds of pests and diseases in soybean and corn, so the compound planting mode can reduce the harm of pests and diseases and reduce the use of pesticides.

The third is to increase economic benefits. Soybean-corn belt compound planting can increase the yield per unit area and increase farmers' income.

The fourth is ecological benefits. Rotation of soybean and corn can increase soil organic matter content, improve soil structure and reduce environmental pollution caused by chemical fertilizers and pesticides.

Regional density recommendation of this planting technology

Small plant spacing and close planting ensure that the density of strip-shaped multiple cropping corn is equivalent to that of single cropping, and moderately reducing plant spacing ensures that the density of soybean in the whole field reaches 70% ~ 100% of the local single cropping density. Take two rows of corn as an example. The corn hole spacing 10 ~ 14 cm (single grain) or 20 ~ 28 cm (double grain) in southwest China, and the sowing density is above 4500 grains/mu. The row spacing of soybean plants is 7 ~10cm (single seed) or14 ~ 20cm (double seed), and the sowing density is above 9500 seeds/mu.

The hole spacing of Huanghuaihai corn is 8 ~ 1 1 cm (single grain) or 16 ~ 22 cm (double grain), and the sowing density is more than 5000 grains/mu; The soybean spacing is 7 ~10cm (single seed) or14 ~ 20cm (double seed), and the sowing density is above 12000 seeds/mu. Northwest corn and soybean are sown in single or double holes, with the corn hole spacing of 8 ~ 1 1 cm (single grain) or 16 ~ 22 cm (double grain), and the sowing density is above 5500 grains/mu; The soybean spacing is 7 ~ 9 cm (single seed) or 14 ~ 18 cm (double seed), and the density is above 13000 seeds/mu.