A method for increasing annual yield of crops

Abstract

The invention relates to a method for increasing the annual yield of crops. A corn-middle rice crop rotation technology is adopted. The method comprises the following steps: early sowing spring cornsin good time; meanwhile harvesting the spring corns at the end of June and in the beginning of July; and planting middle rice varieties in next crop. The planting area of single-season middle rice isincreased, the area of double-season rice is reduced, thus, the annual comprehensive yield of a farmland is reduced, and meanwhile, the practical problems that the population of China is increased continuously, and demands to grain are increased continuously exist, and annual crop rotation of corns and middle rice is realized in south of Yangtze river. By the method, materials are quite easily obtained, an operation process is simple, an application method is simple and convenient, the cost is low, popularization is facilitated, and the application prospect is good. The annual yield of crop seeds is improved remarkably. Compared with a traditional double-season rice continuous cropping mode, the method has the advantages that the annual total yield of corn and middle rice seeds is increased by 20% or above, and requirements of sustainable development of China are met.

Description

Technical field [0001] The invention belongs to the technical field of soil tillage systems, and specifically relates to a method for increasing annual crop yields in a corn-rice rotation system. Background technique [0002] With the changes in our country’s population and birth policy, the total population of our country will continue to grow for a period of time. Increasing the output of farmland food crops will continue to be the main task facing our agriculture for a long time in the future. At present, among the total output of my country's three major food crops, maize steadily ranks first and rice second. In 2016, the sown area of ​​corn was more than 36 million hectares and that of rice was more than 30 million hectares. [0003] In view of the increasing population aging in my country, the increasing urbanization of the agricultural population has led to the gradual reduction of labor input in agricultural production, and secondly, the per-unit yield of medium rice (such...

AI Technical Summary

Problems solved by technology

[0005] In addition, the long-term rice planting keeps the soil in a state of flooding all the time, coupled with long-term wet plowing and wet-conditioning, which destroys the aggregate structure in the soil, makes the soil compact, increases the bulk density, poor ventilation and water permeability, deteriorates the soil properties, and further forms sub- Toxic substances such as iron ions and sulfides, as well as the gleization layer and the lower layer of the plow, are not conducive to the development of crop roots and affect the growth of crops

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