Crop planting years refer to the length of time the same crop is grown on the same land. Different crops have different planting years. Some crops like rice and corn are harvested once a year and the planting period is one year. Other crops, such as fruit trees and mulberry trees, take several years to begin bearing fruit, and the planting period varies from several years to ten years.
Crop planting years represent a significant portion of agricultural production costs. Short-lived crops must be re-fertilized and checked for pests every year, leading to inefficient land use and requiring farmers to invest a lot of labor and capital. Long-term crops play an important role in some gardening projects such as gardens, fruit trees andtea gardens, which can reduce waste of land, labor and capital and improve land utilization.
Management of planting years must be based on the principles of soil protection and improvement of crop quality. To the extent permitted by the soil, the planting years of crops should be extended as much as possible, agricultural lands of the same type should be merged, and land use efficiency should be improved. However, planting the same crop for many years will lead to problems such as poor soil, increased types of pests and diseases, and decreased crop quality. Therefore, it is necessary to carry out timely crop rotation and add plowing, fertilization and other measures to restore vitality to the land and improve production efficiency.