Method for planting corn in staggered large and small rows in two seasons

Abstract

The invention provides a method for planting corn in staggered large and small rows in two seasons, belongs to the technical field of planting of crops and adopts a double-season corn mode, a large and small-row staggered planting mode, a strip crop rotation centralized management mode, a previous season crop residue protective cultivating mode and a precision drilling mode on the basis of enhancing sunshine and heat resources in a multiple cropping planting area, protecting the recovery of farmland capability and enhancing unit area yield and agricultural comprehensive benefit. The mode of double-season corn comprises a yearly double-season seed harvesting mode, a seasonal silage corn and a seasonal seed harvesting mode and a double-season silage corn mode. In large and small-row staggered planting, small rows (30 to 45 centimeters) and large rows (70-90 centimeters) are switched and staggered in a previous season and a next season to form an alternate recovering mode; the centralized management mainly refers to cultivation management on a small-row area; a large-row area is a protective cultivation area; and the large and small rows form strip crop rotation. The method has the advantages of high material production capacity, high light temperature utilization ratio, capability of simplifying cultivation and saving water and fertilizer, and the like.

Description

Technical field: [0001] The invention belongs to crop cultivation techniques, in particular to corn cultivation techniques. Background technique: [0002] In the large multi-crop (two-crop, three-crop) regions in China, especially the two-crop regions in the North China Plain, the traditional cultivation mode is winter wheat-summer maize. This model has shown many problems with changes in the environment and climate, such as: (1) annual cover crops in farmland, excessive use of nutrients and water, and lack of land fertility; (2) climate warming causing winter droughts and spring droughts Occurs from time to time, and the risk of winter wheat yield reduction due to drought increases; (3) The utilization efficiency of light and heat resources is low, and the overall benefit of planting is not high. [0003] As a C4 crop, corn has much higher photosynthetic efficiency than wheat, so the yield per unit area is also higher than that of wheat. The traditional winter wheat-summe...

AI Technical Summary

Problems solved by technology

This model has shown many problems with changes in the environment and climate, such as: (1) annual cover crops in farmland, excessive use of nutrients and water, and lack of land fertility; (2) climate warming causing winter droughts and spring droughts Occurs from time to time, and the risk of winter wheat production reduction due to drought increases; (3) The utilization efficiency of light and heat resources is low, and the overall benefit of planting is not high

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