(1) Select suitable crops and varieties

To select crops and varieties for intercropping, first of all, their adaptability to a wide range of environmental conditions must be *** The growth period must be roughly the same; secondly, crop morphological characteristics and growth characteristics must be adapted to each other to facilitate complementary use of the environment; finally, the combination formed by crop matching is required to have higher economic benefits than single cropping.

(2) Establish a reasonable field configuration

A reasonable field configuration is conducive to solving various

contradictions between crops and within species. Field configuration mainly includes density, row ratio, width, spacing, row direction, etc.

① Density is the core issue of reasonable field configuration. The planting density of intercropping should be higher than the density of any single crop, or higher than the sum of the densities of each crop in a unit area; the proportion of the main crop should be increased, and the density should be higher than or equal to that of monoculture. The proportion of side crops should be smaller and the density should be smaller than that of monoculture.

② Arrange the row ratio and width to give full play to the advantages of side rows and reduce the disadvantages of side rows.

③The spacing is the distance between adjacent rows of crops. The spacing of various combinations is generally too small in production and rarely too large. On the premise of making full use of the land, we should mainly take care of low-growing crops without affecting their growth and development too much. When specifically determining the spacing, it can generally be adjusted based on the sum of half of the row spacing of the two crops. When the fertilizer, water and light conditions are good, it can be appropriately narrower, and vice versa.

(3) Crop growth and development control technology

In the case of intercropping, although the field structure is reasonably arranged, there are still conflicts between them competing for glory, fertilizer, and water. In order to achieve high yield and efficiency in intercropping, the following cultivation techniques should be followed:

① Sow seeds at the right time to ensure full seedlings and promote early emergence.

②Apply additional fertilizers appropriately and rationally. During the growth period, seedlings should be thinned out early, seedlings replenished early, topdressing applied early, weeding early, and insect pests treated early.

③Apply growth regulators to control the growth of high-rise crops, promote the growth of low-rise crops, and coordinate the normal growth and development of each crop.

④ Timely and comprehensive prevention and control of pests and diseases.

⑤ Early maturity and early harvest.