A kind of paddy and dry crop rotation method of no-tillage and multiple cropping of spring corn and late rice

Abstract

The invention discloses a rice field-upland field rotation method for achieving no-tillage double cropping of late rice in a spring maize field. The method comprises the steps of early-spring soil tillage and ditching and ditch making, spring maize variety selecting and sowing, spring maize field management, maize harvesting and straw treatment, late rice sowing and seedling raising, late rice seedling bed period management, late rice no-tillage pot seedling transplanting, fertilizer and water management of land for growing field crops and the like. By means of the rice field-upland field rotation method for achieving no-tillage double cropping of the late rice in the spring maize field, successful arranging of double cropping of spring maize and the late rice is achieved, the annual light and temperature resource use ratio is increased, the farming consumption time of crop change of the maize and the late rice is shortened, the mechanical input cost is reduced, the annual grain yield per mu is 1,300 kilograms or above, and the annual benefit per mu is significantly improved.

Description

technical field [0001] The invention relates to a paddy and dry rotation method for no-tillage and multiple cropping of late rice in spring corn, belonging to the field of crop planting. technical background [0002] At present, the planting systems of paddy fields in the low hilly plains of the Yangtze River Basin are mainly based on double-cropping rice, rice-oil rotation and rice-wheat rotation. Affected by factors such as social and economic conditions, market and climate change, the rice field planting system in this area is constantly changing and adjusting. Since the 21st century, due to the decline in the benefits of growing grain, the labor intensity of double-cropping rice production has been high. With the transfer of rural labor force, labor and opportunity costs have increased. The phenomenon of double-cropping rice changing to single-cropping rice has become more and more common, and the sown area has dropped significantly. The waste of light and temperature r...

AI Technical Summary

Problems solved by technology

Since the 21st century, due to the decline in the benefits of growing grain, the labor intensity of double-cropping rice production has been high. With the transfer of rural labor force, labor and opportunity costs have increased. The phenomenon of double-cropping rice changing to single-cropping rice has become more and more common, and the sown area has dropped significantly. The waste of light and temperature resources is serious, which reduces the land production efficiency and significantly reduces

The middle and lower reaches of the Yangtze River have the advantages of abundant light, temperature, water and other climate resources, with sufficient light radiation, the annual accumulated temperature above 10°C is greater than 4500°C, and the rainfall is above 800mm. Jade / rice stubble and multiple cropping can be realized, but supporting technologies are still needed to regulate heat Rational allocation of resources to achieve safe and mature harvest of corn and rice