What are the functions of plant interplanting and interplanting?

Intercropping: planting more than two crops at a certain row interval on a piece of land at the same time. This cultivation method is called intercropping. The interplanting two varieties have a long growth period. Intercropping is often between high crops and short crops, such as corn and soybean or vegetables. Intercropping can closely plant tall crops and make full use of marginal effect to obtain high yield, while short crops are less affected. Generally speaking, due to good ventilation and light transmission, light energy and CO2 are fully utilized, and the output can be increased by about 20%. Among them, the fewer rows of high crops and the more rows of short crops, the better the intercropping effect. Generally, two rows of tall crops are used, four rows of short crops are called 2: 4, and some are 4: 6 or 4: 4. Intercropping ratio can be determined according to the specific situation. Intercropping is mainly to plant one crop in the late growth stage of another crop, and the co-growth time is short. Planting several crops on a piece of land according to certain row spacing, plant spacing and length-width ratio of the land is called intercropping and interplanting. Generally, sowing several crops at the same time is called intercropping, and sowing at different times is called interplanting. Intercropping and interplanting is the traditional experience of farmers in China, and it is also a measure to increase agricultural production.