Brief introduction of crop rotation

crop rotation refers to the planting method of planting different crops or multiple cropping combinations in turn between seasons and years in the same field. For example, soybean → wheat → corn, which is a single crop rotation during the year; Under the condition of more than one year's cropping, there are both annual rotation and annual crop replacement, such as green manure-rice-rice → rape-rice → wheat-rice-rice rotation in the south, which is composed of different multiple cropping methods, so it is also called multiple cropping rotation.

The naming of rotation depends on the composition of the main crops in the rotation, and the named crop groups should account for more than 1/3 of the rotation area.

The common crops are cereal rotation, cereal rotation, grain and cash crop rotation, paddy-upland rotation, grass-field rotation and so on.