Planting method to multiple-crop Vicia villosa after return of spring wheat straws to field

Abstract

The invention discloses a planting method to multiple-crop Vicia villosa after return of spring wheat straws to the field. The planting method includes the steps of (1) seeding spring wheat in the beginning of spring in the very year, and irrigating regularly; (2) after the spring wheat of step (1) is mature, harvesting with high stubbles left, crushing the harvested spring wheat straws, returningto the field, and multiple-cropping Vicia villosa; (3) upon frost season of the very year, reaping Vicia villosa, and returning to the field by covering; (4) repeating the steps (1), (2) and (3) in the next year. The planting method has the advantages that the input of nitrogen fertilizer for wheat cultivation can be decreased, multiple cropping and crop rotation help balance the soil nutrients,the return of the spring wheat straws to the field and the return of Vicia villosa to the field help increase the content of organics and effective nutrients, such as N and P, in the topsoil of a farmland, part of inorganic chemical fertilizer can be replaced, land fertility can be increased, and the return of Vicia villosa to the field helps reduce wind erosion and maintain high water content ofsoil.

Description

Technical field [0001] The invention belongs to the technical field of agricultural planting, and specifically relates to a planting method for multiple cropping of vetch after returning spring wheat stalks to the field. Background technique [0002] In Northwest China, the area of ​​arable land with more than one crop but insufficient two crops per year amounts to millions of hectares. The frost-free period is 150-180 days. The crop production model is a typical one crop per year system. Wheat is the main food crop. The planting area is more than 30%. After the wheat is harvested, there are still about 90 days of frost-free heat conditions, and a large amount of wheat straw is produced every year. However, the utilization technology of wheat straw has been backward, the resource conversion rate is low, and the cycle Problems such as underutilization are more prominent. Especially in recent years, agricultural mechanization has replaced livestock farming, farmers have replaced s...

AI Technical Summary

Problems solved by technology

Wheat is the main food crop, with more than 30% of the planting area. There are still about 90 days of frost-free heat conditions left after wheat harvest, and a large amount of wheat straw is produced every year. However, the utilization technology of wheat straw has always been backward, the resource conversion rate is low, and the recycling Problems such as underutilization are more prominent

Especially in recent years, agricultural mechanization has replaced livestock farming, farmers have replaced straw fuels with coal, liquefied petroleum gas and natural gas, and it is difficult for combine harvesters to remove stubble after harvesting, which has led to the widespread phenomenon of straw burning, which in turn leads to serious waste of straw resources. Serious consequences such as environmental pollution, soil microbial destruction, and a large amount of greenhouse gas emissions. At the same time, this will expose the soil surface of farmland in spring and winter, which is prone to sandstorms and surface runoff and soil erosion.

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